What are the pros and cons of the third line of South-to-North Water Diversion Project?
Eastern route, advantages: The Beijing-Hangzhou Grand Canal can be used as a water diversion channel, with small investment and low construction cost. Disadvantages: The southern section of the canal has high terrain in the north and low terrain in the east, requiring gradual addition of water, high power consumption, and high operating costs.
Middle line, advantages: the entire line can divert water along the terrain, and the operating cost is low. Human activities along the route will cause less pollution to the water environment. Disadvantages: New water diversion channels are required, which requires large investment, high cost and long construction period.
Advantages of the western route: The water quality in the upper reaches of the river is good. Disadvantages: New water diversion channels need to be built, and tunnels need to be built through mountains, which requires large investments, high costs, and long construction periods.
The South-to-North Water Diversion Project is a major strategic project that aims to divert part of the Yangtze River's abundant water resources to North and Northwest China, thereby reversing the situation of flooding in the south and severe water shortage in the north. It aims to promote the coordinated development of economy, society, population, resources and environment in the northern and southern regions of China. South-to-North Water Diversion Master Plan: Three water diversion routes are recommended: the east, middle and west lines. By connecting the three water diversion lines with the Yangtze River, Yellow River, Huaihe River, and Haihe River, an overall layout of four horizontals and three verticals is formed, thereby promoting the rational allocation of my country's water resources.
The significance of the South-to-North Water Diversion Project is divided into social significance and economic significance.
1. Social significance Solve the water shortage problem in the north; Improve the carrying capacity of water resources and improve the efficiency of resource allocation; Make the northern region gradually become a water-saving and anti-pollution type with reasonable allocation of water resources and good water environment Society; It is conducive to alleviating the constraints of water shortage on urbanization development in northern my country and promoting the local urbanization process; the Jining-Xuzhou section of the Beijing-Hangzhou Grand Canal is open to navigation throughout the year, ensuring water sources. The two commercial grain bases in western Shandong and northern Jiangsu have been consolidated and developed. Provide guarantee for economic development in the north; Optimize industrial structure and promote strategic adjustment of economic structure; Promote potential productivity and economic growth by improving water resources; Expand domestic demand, promote harmonious development, and increase GDP.
The South-to-North Water Diversion Project must coordinate and systematically manage water resources, water ecology and water environment. He said: "Whether it is water saving or water control, water resources should be regarded as a strict constraint." "From the political perspective of protecting the lifeline, we must ensure the safety of the South-to-North Water Diversion Project, the safety of water supply, and the safety of water quality, and effectively improve the safety of the South-to-North Water Diversion Project. comprehensive benefits and achieve high-quality development." Scientifically promote the planning and construction of follow-up projects to help high-quality development of the South-to-North Water Diversion Project to benefit future generations.