But is water inexhaustible? We can definitely answer: No, although 70.8% of the earth is covered with water, 97.55% of the water is seawater, which can neither be directly drunk nor irrigated. Of the remaining 2.5% fresh water, the water that humans can really use is less than 1% of the global total fresh water. It is true that from the appearance of primitive life on earth to the present, water has been serving life, working hard and never stopping. But I don't know if you have thought that there is a limit to the endurance of water, and now water resources are in short supply! There are two main reasons for this situation: first, the lack of nature itself; Second, man-made destruction. Of course, we can't blame God for being unfair to us and giving us a planet short of water. On the contrary, we should thank God for creating a beautiful home for us.
However, it is in this emergency that we humans continue to waste and destroy water resources. Because a large amount of industrial wastewater is discharged into Lian and Rong rivers, the water quality of the two rivers is seriously polluted, and the water quality only reaches the third class standard, so it can neither be drunk nor used for irrigation. As an island county like South Australia, its water use depends entirely on "God's arrangement"-the rainwater collection area of all Shantang reservoirs, including flood diversion projects, only accounts for 3 1%, and it is still difficult for industrial and agricultural production and people's living water. It can be seen that it is urgent to properly handle the pollution and destruction of water resources. However, there is a serious shortage of water resources in the world today, and wars caused by water are increasing day by day. For example, of all the resources in the Middle East, water is the most likely to cause crisis, and water in the Middle East is more expensive than oil. Most countries in the Middle East are seriously short of water. The Middle East has suffered from drought for more than ten years and is facing a serious water crisis. The Little Jordan River has given birth to two major religions, which is the most hotly contested water source in the Middle East, and four wars in the Middle East have been related to this. The Jordan River provides two-thirds of the water for Lake Galilee, Israel's main water source. The Johnston agreement of 1955 stipulated the water quantity of all parties, but only Israel signed it, and Arab countries wanted to cut off the Jordan River in the 1960s. 1965, the Israeli army bombed the interception equipment in Syria. Both Arab countries and Israel take the destruction of competitive water resources as their primary strategic goal, and Israel has occupied the Golan Heights, the birthplace of the Jordan River. One of the difficulties in Syrian-Israeli negotiations is that Israel insists on occupying most of the water sources in the West Bank. At present, the water resources in Palestine are completely controlled by Israel, and the per capita water consumption is only three-quarters of that of Jewish settlers, but the cost is as high as twice. Pakistan had to over-extract groundwater, which made the water quality worse. The groundwater in Gaza has become too salty to be used. Since the violent conflict, Pakistan's water resources have been neglected, and the water shortage is more serious.
There is no comprehensive agreement on sharing water resources among the three major water systems in the Middle East, and disputes continue. The Nile flows through 10 countries, and the upper reaches are influenced by Egypt. Egypt built the Aswan Dam, which solved the water problem, but it caused dissatisfaction among upstream countries. Whenever there is a dispute, Sudan threatens to cut off water. Ethiopia signed an agreement with Sudan in 199 1 to extract 4 billion tons of river water every year. Egypt strongly opposes it. Turkey is rich in water resources, and the construction of South Water by Turkey to reduce the water flow to Syria and Iraq has been strongly opposed by both countries. Turkey and Israel have reached an agreement to transport the Manafort River to Israel by world ships, and Jordan and Syria are also considering buying water from the soil. Turkey hopes to play its role as a water power and promote cooperation and stability in the Middle East. Israel wants Turkey to increase its water supply to Syria. In exchange for Syria's concession to the border of Lake Gali, Turkey refused to get involved in the complicated Arab-Israeli dispute.
It can be seen that the shortage of water resources will be buffered for a period of time in order to use the right. It is not easy. The only way is to save water, and in this respect, Israel has done better. Two-thirds of Israel is desert, and there is no rain for seven months in a year. The per capita water resource is nearly 70 cubic meters, which is less than 1/4 in the Middle East, 3% in the world and 1/8 in China. However, it is in this barren and water-deficient land that Israel has built modern agriculture through scientific water use, which has amazed the world.
Agriculture is the foundation of Israel's founding. 1952, Israel spent 100 and 500 million dollars, and completed 10/45 km of "South-to-North Water Diversion Project". In the mid-1960s, the scientific water use method of drip irrigation was popularized, which promoted the rapid development of agricultural economy. The agricultural population in Israel has dropped from 60% to 3%, and a farmer can support 90 people, with a per capita GNP 1 80,000 USD, ranking first in the world 12. Israel cherishes water resources very much and regards water as its lifeline. Saving water is a systematic process, involving all aspects of society. Therefore, success has been achieved.
Water makes green grass greener.
Water makes flowers bloom.
Water makes trees tall and straight.
But you are getting haggard every day.
Aging every day.
Tears again and again.
If people do not cherish water resources, then the last drop of water in the world is people's tears.