The purpose of World Water Day is to arouse the public's awareness of water conservation and strengthen the protection of water resources. In order to meet the needs of people's daily life, commerce and agriculture for water resources, the United Nations has long been committed to solving the global water crisis caused by the rising demand for water resources.
The world's fresh water resources are very limited, and the total global fresh water reserves are 350 million cubic meters. The surface water and groundwater available for human production and life are only 105 trillion cubic meters. With the development of agriculture, industry and urbanization, the sustainable utilization of water resources is seriously threatened. 1977 The World Water Conference was held in the United Nations, which sent a serious warning to the whole world: water will be the next crisis after the oil crisis. 1993 65438+1October 18. The United Nations convened the 47th General Assembly and designated March 22nd as World Water Day. In order to better strengthen citizens' awareness of water saving, the water saving plan is implemented. China will set up China Water Week on March 22-28 every year.
According to scientific calculations, more than half of the countries and regions in the world lack drinking water, especially in the economically underdeveloped third world countries. 70% of the population, that is, 654.38+0.7 billion people, cannot drink clean water, and nearly 80% of the global population is threatened by water shortage. China's per capita fresh water is a quarter of the world's per capita level, and it is a water-deficient country. More than 300 cities in China are short of water, and 29% people are drinking bad water, of which 70 million people are drinking high fluorine water. Every year, the economic losses caused by water shortage reach more than 654.38+0 billion yuan, and the economic losses caused by water pollution reach more than 40 billion yuan.
From the environmental point of view, the most perfect measures are water interception and water transfer. Change the temporal and spatial distribution of water resources and make full use of water resources. At the same time, it pays attention to saving water and improving the utilization rate of water resources: in industry, it advocates water-saving industry, controls pollutant discharge and strengthens wastewater treatment; Agriculture should adopt advanced irrigation methods. Water is the foundation of life, which not only relates to the quality of human life, but also affects human survival ability. We must enhance the awareness of water crisis, cherish water, save water and protect water resources.