1. 1. 1 The overall water quality of Zhelin Lake is in Class III, and the water quality of some tributaries entering the lake is relatively poor. According to the monitoring data of Zhelin Lake water quality report in 2000-20 1 year, the water quality of Zhelin Lake has dropped from Grade I in 2003 to nearly Grade II in the past1year. Since 2004, it has been reduced to Class III water quality, and it has been maintained to the present Class III water quality. The changing trends of permanganate index, ammonia nitrogen, total phosphorus and total nitrogen are shown in Figure 1 and Figure 2. Total phosphorus and total nitrogen remain stable in Class III, while permanganate index and ammonia nitrogen remain stable in Class II [5]. Because of the large water area, the spatial distribution of water quality in Zhelin Lake is quite different. In the case of good overall water quality, the water quality in the coastal zone and some reservoirs and bays is obviously worse than that in the middle of the lake and on the dam. There are still some pollution problems in the water body entering the lake area, and the water environment is still fragile.
1. 1.2 Zhelin Lake is in a medium trophic state as a whole, but in some seasons, cyanobacteria become one of the sub-dominant groups in regional lakes and bays, and the ecological security of regional lakes and bays needs to be paid attention to. In the investigation of 2010-201year, it was found that the phytoplankton community in the lake area changed from diatom to blue in the current regional lake area in dry season and normal season. Phytoplankton community in some bays of Zhelin Lake has become one of the sub-dominant groups, indicating that some bays of Zhelin Lake have a certain eutrophication trend. The phytoplankton community in the lake area has evolved from diatom with river characteristics to cyanobacteria in the current regional lake area, indicating that the external input in Zhelin Lake area is increasing, the water quality is deteriorating and the risk of eutrophication is prominent. Therefore, it is necessary to reduce the load of entering the lake at the basin scale, carry out ecological security protection and lake ecological management in the basin, prevent the spread of eutrophication in regional lakes and bays, and gradually maintain the stability of the lake ecosystem.
1.2 the standardization of drinking water sources needs to be strengthened, and there are hidden dangers in drinking water safety. At present, there are three lake-type drinking water sources in Zhelin Lake area, namely, the intake of Yuankou Reservoir, the intake of Du Dong Reservoir and the intake of the third affiliated dam of Zhelin Dam, which mainly supply water to residents in Wuning County, Qingcheng County and Dean County, and will also be used as standby drinking water sources in Nanchang City and Jiujiang City during the Twelfth Five-Year Plan period. However, at present, the drinking water source of Zhelin Lake is open, the isolation and protection facilities are backward, and the ability of automatic monitoring, emergency warning and standardization construction of the drinking water source is quite weak, so there are great hidden dangers in drinking water safety. Therefore, it is urgent to focus on pollution prevention and control on the basis of watershed management to ensure the safety of drinking water.
1.3 The development of fishery is not standardized, and the aquatic biodiversity is destroyed.
1.3. 1 Overdevelopment of cage culture has brought harm to the ecological environment. In recent years, cage culture has shown an unprecedented development trend. According to the survey, there are more than 22,000 cages and 345 fish ponds near the auxiliary dam of Zhelin Lake reservoir area and Wuning County Lake area, and the cage culture area in Zhelin Lake area is * * * ten thousand mu. 59676.86868688666
1.3.2 illegal fishing has been repeatedly prohibited, and aquatic biodiversity has been destroyed. According to the investigation of the fishery administration joint law enforcement team, the forms of illegal fishing in the lake area are light trapping, trawling and illegal fishing gear fishing. Illegal fishing reduces fishery resources and destroys the diversity of aquatic animals. Before 2003, as many as 200 kilograms of fish could be caught in Zhelin Lake by traditional methods. In 2008, the daily catch of each ship has dropped to less than 50 kilograms, and the species of fish is relatively single. According to the light trial catch of whitebait in different waters of Zhelin Lake by fishery administration, the results show that only a small amount of whitebait is caught in each net in Yongxiu waters, and only 0.25kg whitebait is caught in each net in Wuning waters, which is far from 5 ~ 10 kg per net in previous years.
1.4 tourism development is accelerated, and the pollution risk is increased. In recent years, human activities in Zhelin Lake Basin have been strengthened, and the contradiction between tourism development and environmental protection has become increasingly prominent. In 20 10, the number of tourists was * * * 807,700, including 795,000 domestic tourists. After the opening of 20 1 1 Xihai Expressway in September, the number of tourists in Zhelin Lake has doubled, and the environmental problems brought by it have become increasingly prominent. Therefore, accelerating the ecological protection and pollution control of Zhelin Lake is very important to improve the anti-interference ability of Zhelin Lake ecosystem. The West Sea of Lushan Mountain on the east bank of Zhelin Lake is a newly developed and under construction national scenic spot, and various investment projects are pouring in. CITIC Group will invest 654.38+0.5 billion yuan in the development and construction project of Lushan West Sea to build an ecological resort. The construction of the project will break the original natural forest ecosystem, develop water tourism in the future, and the pollution risk will suddenly increase. The contradiction between water environmental protection and tourism development needs to be solved through systematic protection planning and practice.
1.5 Lakeside zone is seriously occupied by human beings, and its buffering capacity is reduced. The natural zone of lakes is generally disturbed by human beings, and the phenomenon of human encroachment along the lakeside zone is serious, and the contradiction between development and protection is increasingly prominent. Many houses have been built along the lake town section, especially Wuning County sewage treatment plant and industrial park are all near the lake, and domestic sewage and industrial wastewater are directly discharged into the lake; A lot of farmland has been built along the lake 100 km, and pesticides and fertilizers are directly discharged into the lake without being intercepted by the corresponding buffer zone, which has a great impact on water and soil. In addition, hotels such as Zhelin Lake Hotel, Beidaihe Hotel and Qingshui Mountain Villa have been built around the scenic spot, and the wastewater is directly discharged into the lake after simple micro-power and septic tanks. Therefore, the buffering capacity of the lakeside buffer zone is declining, and it is urgent to carry out ecological restoration and construction of the lakeside buffer zone.
1.6 Serious soil erosion, mine runoff pollution, soil erosion caused by development and construction of large towns and mining have become new problems of soil erosion. Although great progress has been made in soil and water loss control in Hexiu River Basin in recent years, soil and water loss is still serious due to the deep accumulation, the decline of forest quality and the decline of forest soil conservation and water storage capacity. The exploitation of mineral resources in the basin not only discharges a large amount of mining wastewater (mine water gushing, waste water heap soaking, mineral processing wastewater, tailings overflow water), but also destroys the surface vegetation and produces a large amount of solid waste. The intensity loss areas in Zhelin Lake area are mainly distributed in Wuning County, Wuning County Industrial Park and Luxi Town on both sides of 3 16 National Highway. Moderate and mild losses are mainly distributed in towns and villages such as Dushi, Xinning Town, Guanlian, Jinkou and Li Xi.
1.7 the environmental infrastructure of the basin is not in place, and there are many historical debts.
1.7. 1 Lack of domestic and industrial sewage collection and treatment system Zhelin Lake District has a total population of 389,000 and a daily domestic sewage output of nearly 30,000 t. Only Wuning County in the lake area has built a municipal domestic sewage treatment plant. At present, the first-phase treatment scale of 1 1,000 t/d has been completed and put into production. Due to the imperfect construction of sewage pipeline, only part of domestic sewage around the city is accepted, and most of the domestic sewage scattered along the lake fails to enter the sewage treatment system, and the sewage is directly discharged into the lake. Untreated and dephosphorized wastewater has brought great pressure to Zhelin Lake. In addition, the industrial sewage treatment plants in Wuning Industrial Park and Taiyangsheng Project Park have not yet been built, and the centralized treatment rate of industrial wastewater is low.
1.7.2 There are defects in the domestic garbage collection, transportation and treatment system. At present, there is no perfect implementation mechanism from garbage collection to disposal in Zhelin Lake. The scope of garbage removal in Zhelin Lake Basin is limited to the old city and tourist reception area. Due to the scattered distance and lack of funds, the domestic garbage of other villages along the lake and river has not been effectively collected, and the township garbage transfer system needs to be improved urgently. Due to the lack of transfer system in some towns and villages, the collected garbage is simply buried in one place without harmless treatment, and the untreated landfill leachate directly affects the surface water and groundwater environment. Because there are no suitable landfills in some towns and villages, the garbage is simply burned on the spot, and the burnt flue gas has great pollution to the surrounding areas and lake areas.
1.8 The management mechanism system has not yet been straightened out, and integrated river basin management is imminent.
1.8. 1 The capacity building of environmental monitoring law enforcement, ecological observation and scientific research is seriously lagging behind. The capacity building of environmental monitoring in Zhelin Lake Basin is very lagging behind, and there is no automatic monitoring capability and emergency monitoring capability. The monitoring equipment is in poor condition, and there are no conventional monitoring instruments and on-site rapid monitoring instruments, so it is impossible to effectively monitor the ecological environment of Zhelin Lake. At the same time, the ecological observation and scientific research work of Hexiu River Basin and Zhelin Lake in the region is relatively weak, and the current terrestrial and aquatic ecosystem structure and its changing trend in Zhelin Lake region have not been scientifically and comprehensively grasped. Therefore, it is urgent to invest in building a strong environmental monitoring capacity in the lake area, to conduct long-term follow-up observation on the present situation of ecological service functions and their recovery, and to conduct in-depth investigation and evaluation on the health and safety of Zhelin Lake ecosystem.
1.8.2 There is a "fault zone" in environmental management. There is a lack of unified management organization in Zhelin Lake basin management. Because the basin covers Xiushui, Wuning, Yongxiu and Lushan Xihai Scenic Area Management Committee, there are various institutional problems in the process of environmental protection, such as cross-management, repeated management and unclear authority, which leads to many ecological protection work not being carried out well.
2 Zhelin Lake is facing the main situation
2. 1 Economic and social development The basin is in the middle stage of industrialization. We should not only solve the contradiction between expanding industrial scale and adjusting industrial structure, but also solve the contradiction between increasing pressure on resources and environment and protecting ecological environment. At present, the economic development of xiushui county and Wuning counties in Zhelin Lake Basin is in the stage of structural adjustment, agriculture is gradually moving towards scale, and new and old industrial enterprises are upgrading. In recent years, the counties in the basin have developed rapidly in economy, especially in industry. With the further deepening of economic system reform, the continuous improvement of investment environment at home and abroad, the increase of infrastructure investment, the continuous adjustment and optimization of industrial structure, the rapid development of collective economy and individual and private economy, and the rise of tertiary industry, it is entirely possible for social economy to maintain rapid and healthy development. Therefore, the contradiction between economic development and environmental protection is prominent, and the pressure of ecological environmental protection is intensified.
2.2 Eco-environmental protection: The water quality of the main rivers in Zhelin Lake Basin is basically stable in the Class II ~ III standard in the Environmental Quality Standard for Surface Water, but the concept of eco-environmental protection in the basin needs to be changed urgently, from water quality protection to water ecological protection, from pollution control to prevention and control, and from point source control to non-point source control. It is more difficult to change in three aspects, and the ecological environment protection situation is not optimistic. Therefore, relevant departments should make unremitting efforts in these areas.
2.3 Present situation of environmental risk prevention At present, the development of Zhelin Lake Scenic Area is accelerating, cage culture and chemical fertilizer feeding threaten the safety of drinking water sources, and line sources (mobile sources), especially ships, increase the risk of water pollution accidents.
3 Zhelin Lake ecological environment protection of scientific countermeasures
To prevent and protect the water pollution in Zhelin Lake, the primary measures are to control the source and strengthen management, and the lake water body is mainly protected, supplemented by treatment. At the same time, it is very important to adjust the industrial structure of the river basin, which is the core of the management idea different from other types of lakes. Therefore, a new concept has been adopted for the protection and comprehensive prevention of Zhelin Lake, that is, the main connotation is "keeping water in different pools, running water in the upper reaches, controlling water by the lake and controlling water on the lake surface".
3. 1 Ensure the water quality of Zhelin Lake with the ecological safety of the lake as the core. At present, Zhelin Lake is in the stage of good water quality and moderate nutrition. Through the analysis of the water environmental capacity of Zhelin Lake, except the current load of total phosphorus, other indicators are far less than the value of Class III environmental capacity. Therefore, the main limiting factor affecting the economic development of the basin and the water quality of Zhelin Lake is total phosphorus, and its main pollution comes from residents' life, aquaculture, livestock and poultry breeding and fertilizer loss. Therefore, in the future, it is necessary to implement the project of prohibiting cage culture on the lake, prohibiting cage culture and stocking all kinds of filter-feeding fish in clean water; Implement the project of clean water entering the lake, speed up the construction of sewage treatment plants in industrial parks and the construction of domestic sewage treatment facilities and pipe networks in towns along the lake, and improve the sewage takeover rate and treatment rate; Combined with the construction of a new socialist countryside ("three clean-ups, six changes and four popularization"), that is, removing garbage, sludge and roadblocks; Improve water, toilets, houses, pillars, roads and the environment; Popularize telephone, biogas, cable TV and solar energy, and focus on comprehensive improvement of rural environment along Zhelin Lake and Hexiu; Take measures to control the pollution of livestock and poultry breeding in the area around the lake, vigorously promote soil testing and formula fertilization, and establish a demonstration area for soil testing and formula fertilization; Strengthen the comprehensive improvement of the surrounding environment of Lushan Xihai Scenic Area, implement the zero discharge project of hotel sewage reuse, and reduce the environmental threat of tourism to the waters. The above measures can effectively reduce the load of nitrogen, phosphorus and other pollutants into the lake, avoid regional eutrophication of the lake, and make the water quality of Zhelin Lake meet the functional requirements.
3.2 Focusing on the ecological protection of rivers entering Zhelin Lake, there are 13 main rivers entering Zhelin Lake. At the same time, ecological protection and pollution load reduction of rivers entering Zhelin Lake should be strengthened, ecological protection projects should be implemented for major rivers with serious pollution, such as Shatian River, the upper reaches of Hexiu River, Luhenghe River and Panxi River, and ecological revetment and inland river dredging should be carried out for buffer zones of rivers entering the lake. And supporting related landscape trees and landscape stones, aquatic plants are planted beside the shoreline. According to the local climate and landscape needs, the species of tree species with publicity signs can be configured, mainly evergreen shrubs and trees, and aquatic plants such as lotus leaves, purple-rooted water hyacinths, calamus and canna are planted around the shoreline waters. The implementation of the project can effectively speed up the river flow rate, improve the self-purification function of the water body in the riverside area, and the planted aquatic plants can also intercept a certain pollution load into the lake, which plays a good role in purifying the water quality.
3.3 Strict regional discharge standards, coordinating the relationship between economic and social development and lake protection "Eleventh Five-Year Plan" period, the implementation of water environment management in China changed from target total control to capacity total control, and from simple chemical pollution control to water ecosystem protection, which urgently requires further improvement and development of the existing water quality standard system. In recent years, China has begun to study the water quality benchmarks, standards and total pollutant control in river basins, and achieved initial results [6,7]. However, at present, the only standard for the protection and management of lake water bodies in China is the Environmental Quality Standard for Surface Water (GB3838-2002), and the water quality indicators related to eutrophication are only total nitrogen and total phosphorus, so it is difficult to solve the problems of lake water bloom and ecological degradation by using these indicators. In particular, there is a lack of indicators to measure ecological response and primary productivity, such as chlorophyll and biomass. Therefore, establishing scientific nutrient standards, formulating appropriate environmental quality standards and emission standards, and proposing environmental optimization and economic growth models suitable for Zhelin Lake basin based on water environmental carrying capacity are the key measures to effectively solve the ecological environment problems and protect biodiversity in Zhelin Lake.
3.4 Optimize the industrial structure and change the mode of economic growth. In terms of regulation and control of land resources in the river basin, the "three lines" are strictly delineated within the lake area. According to the sensitivity of ecological environment, the degree of land development and utilization, the characteristics of economic and social development and industrial layout, Zhelin Lake is divided into three functional areas: red line protection area, yellow line control area and blue line optimization control area, and the "three-line" environmental protection measures are strictly implemented. In terms of industrial structure adjustment, resource utilization is regulated by different industries. In agriculture, we should focus on solving the pollution threat of agricultural non-point sources such as large-scale livestock and poultry breeding and planting to lakes, give full play to the advantages of regional ecological environment and characteristic agricultural resources, and promote the development of efficient ecological agriculture. In terms of industry, it is necessary to strictly access the environment, optimize the layout, take the industrial park as a platform and rely on key enterprises to promote the development model of circular economy, promote energy conservation, emission reduction and consumption reduction, and develop the green mining economy of major minerals such as tungsten, antimony and coal mines in Zhelin Lake Basin. In the tertiary industry, we should focus on eco-tourism and the development of modern logistics industry, vigorously develop the tertiary industry, rely on the rich tourism resources of Zhelin Lake, highlight the ecological characteristics of Zhelin Lake, and show the local folk culture. Through the continuous improvement of infrastructure, the increasing popularity of scenic spots and the rapid gathering of tourists, a special framework for sightseeing, sightseeing and vacation will be formed, and the scenic spot will be built into "the hottest in Jiangxi, famous in the middle of China and first-class in the country."
3.5 Strengthening automatic monitoring and innovating management methods The protection of lakes cannot be separated from the effective supervision of river basins. Therefore, according to the idea of "controlling sources and strengthening management", the environmental supervision and comprehensive management of Zhelin Lake in the whole basin should be carried out while controlling external sources. Due to the large area of the lake and the difficulty of supervision, it is necessary to optimize the monitoring network, strengthen the capacity building of automatic monitoring of water quality and water ecology in the lake area, and innovate management methods to promote the virtuous circle and sustainable development of ecological environment protection in Zhelin Lake.
At night, I walk alone by the quiet river. Suddenly, a sob came into my ears. "Blare ... I'm dirty, I stink, I'm sick of human beings, and I'm afraid of plants. Blare ... "
I listened carefully and couldn't help asking, "Why do you say that? Aren't you the source of life? "
"Yes, I am an important part of organisms and an indispensable substance in people's lives. Now, I have become the chief culprit in strangling life. If you humans eat me, I will be poisoned. If plants absorb me, I will wither and die. If animals drink me, I will get sick and die. " Water girl cried to me sadly.
"How did you become like this?" I asked sympathetically and puzzled.
"alas! It's a long story You should know. In the 1970s, when your human industrial and agricultural production was underdeveloped, it didn't have much influence on me. In the 1980s, your industry and agriculture developed greatly, but since then, I have been seriously polluted. By the end of 1990s, you humans were shouting the slogan of "purifying sewage and improving water quality". In fact, you were just talking about it, but it was just a formality until you turned me into this dirty and smelly appearance. You see, the fish and shrimp that used to live on me are now on the road to extinction step by step ... "As I spoke, the river couldn't help sobbing:" How I want to be as clear and clean as before, so that animals and plants can serve mankind well, blare ... "
I see, it turns out that all this is a "smart" mistake made by our high IQ! "River water, don't worry, one day, we will return your clear and beautiful face!"
On the way out of the river, I felt uneasy and thought a lot: the Songhua River was polluted by sewage discharged from several factories, and the water quality deteriorated, which seriously affected the lives of people along the river ... If we continue to pollute the water source like this and do not protect it, it is bound that one day even the water in the river will not be drinkable. Without water, people can't live, and without water, plants will die.
Wise people, it's time to wake up, please protect the source of our life-water, otherwise: "the last drop of water on the earth will become the last tear of our mankind!" " "Please act and return the green mountains and green waters to nature!
Strive to be the patron saint of rivers and lakes, and strive to be the little guardian of environmental protection.
Grandpa once told me a story that happened in a small village: this small village attracted many tourists because of its beautiful scenery. One of the tourists said to the people in this small village, "You have a gift from God here." Everyone thinks that there is gold buried underground, so they all cut down trees, dig up land and look for treasure everywhere. Slowly, the beautiful village of the past disappeared. When the tourist came to the small village again, the villagers questioned him, and he replied truthfully: "The gift I am talking about is the picturesque scenery here!" When I heard this, everyone suddenly realized. A few years later, with the joint efforts of everyone, the small village recovered its former beautiful appearance.
After listening to this story, I decided to take action to protect the earth, protect the green home, and strive to become an environmental messenger. I remember not long ago, a boy littered after recess. A passing classmate saw it and immediately squatted down to pick up the garbage, walked to the trash can and threw it into the trash can. The little boy who threw rubbish blushed. He scratched his head and left shyly. I believe he will correct it. Sure enough, it wasn't long before I saw the little boy who littered last time pick up the rubbish on the playground and throw it into the trash can. He corrected his mistake and joined the action of caring for the green home. Although I don't know his name, he told me by action that his name is little environmental guardian. ...
The earth is our home, and we want to make Mother Earth more beautiful! Let's take action, strive to be environmental defenders together and contribute to creating a green home!
In our life, Jiangxi's composition on rivers and lakes is full of natural wonders, such as rivers and lakes, mountains and rivers, Yuan Ye, the sky, the sun and the moon, or storms and lightning. These seemingly ordinary natural scenery left us a deep impression. The stream belongs to nature, and we are not qualified to destroy it. But with the random destruction of people, they have no choice but to disappear. In my hometown, there is such a stream. In the early morning, the stream looms from a distance, and if there is something, it seems generous and relaxed. At noon, the winding clean raw water was originally the Dalongtan in the sun, and the water was surging, which was quite Rowen. When I arrived at Jiudaowan, it was more and more ups and downs. In a hurry, pearls splash jade, and in a slow place, the silver lake flows, and the waves scatter and sound. At dusk, the sky is dripping with rain. The rain is as thin as hair and as light as flying, and the whole stream is blurred in that stream, like a girl hiding behind a bead curtain, vaguely seeing her graceful figure but not her beauty. ...
The theme of this composition about glacial lake is that the lake is green like a piece of jade, shining in the sun. The blue sky and the blue lake set each other off and are surrounded by the Albertus mountains, giving people a very cold feeling. The wind in the lake is so strong that I can't stand still.
After watching the glacial lake, we started the "bus tour" again. Passing through a pasture on the way, the guide stopped to show us camels and sheep. Alpaca is a specialty of Australia and New Zealand. In terms of body shape, camel's head is the same as camel's, its neck is long, its body shape is larger than that of sheep, and its hair is much softer and thicker than that of sheep. Alpacas are naturally arrogant. They only eat long, thin grass and nothing else. However, the alpacas in this pasture seem to be very hungry and even eat grass, flowers, roots and bark. I saw that these alpacas were so pitiful that I wanted to feed them. Not far away, there is the kind of grass that alpacas like to eat. I ran to grab a handful of grass and fed it to a black alpaca and that alpaca. However, the alpaca didn't bite a finger, but gave me a greedy look, as if to say to me, "Can you give me some more grass you just fed me?" Without hesitation, I immediately rushed to that place and grabbed a handful of grass to feed the camels. This was repeated several times. I feed the camels. It gave me a grateful look and leaned over to me. I touched the camel's back. He turned his head and gently touched my hand with his nose as a gesture of friendship. I thought to myself: thank me. I touched the camel's head and neck again. It is comfortable, soft and feels much better than wool. It was not until the tour guide told us to get on the bus that it gave me another affectionate glance and walked away slowly.
I made a camel friend today, so happy!
The famous phrase for protecting rivers and lakes is 1, a drop of water, a piece of green land, one earth.
2. Being kind to water means being kind to life.
The pillar of the country is indispensable, and the water of life cannot dry up.
It is the responsibility of the whole society to save water and protect water resources.
5. Pay equal attention to open source and throttling, give priority to throttling, give priority to pollution control, open source scientifically and comprehensively utilize.
Hope to adopt
Examples of Protecting Rivers and Lakes Successful Cases of Protecting and Governing Rivers and Lakes at Home and Abroad
Lake Geneva: Strictly regulated by law.
The participation of all the people
Lake Geneva in Geneva, Switzerland, with beautiful scenery, is the largest inland lake in Europe, but it has also become lifeless.
Lake, smelly water lake. Last century
70
In 1980s, Lake Geneva was seriously polluted by industrial, agricultural and domestic wastewater.
The fish in the lake are endangered.
In order to improve water quality, Switzerland has enacted strict laws to limit the discharge of pollutants and established sewage treatment.
Even treated sewage from factories will not be discharged into lakes. Because half of the lake belongs to France, it is local.
* * * has also established a transnational water pollution control mechanism to promote cooperation between the two countries and jointly deal with river pollution problems ... By this century,
At first, Lake Geneva was completely safe for people to swim, row or dive and row, and so was the lake.
Drink it directly.
The management experience of Lake Geneva mainly includes:
First, using biochemical technology to transform polluted river water;
The second is to raise the awareness of the whole people to protect lakes, so that everyone can realize that every enterprise and everyone has the responsibility to turn the tide.
Lake Neva, saving the lake means saving everyone; The third is to formulate strict regulations to strictly distinguish between pollutants and
Non-polluted and polluted water is not allowed to flow into Lake Geneva, and the use of pesticides on both sides of the river is restricted.
In Geneva,
1/3
Our parks don't use pesticides.
Cherish the sentences in the Jianghu.
explain
You can write sentences:
We should cherish water and everything we have.
Words describing rivers and lakes are clear, flawless, transparent, blue-green, quiet, gentle, light and smooth, and blue waves ripple to the end.