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What measures should be taken to deal with frequent floods in the middle and lower reaches of the Yangtze River?
(1) Biological measures: Building shelterbelts in the middle and upper reaches of the Yangtze River can reduce soil erosion and surface runoff in the upper reaches of the Yangtze River and reduce the amount of water flowing into the main stream of the Yangtze River in flood season;
(2) Engineering measures: including building the Three Gorges Dam, straightening Jingjiang section, strengthening dikes in the middle and lower reaches of the Yangtze River, and building flood diversion and storage projects. The Three Gorges Reservoir can hold the upstream water and reduce the flood control pressure in the middle and lower reaches. Cutting and bending the Jingjiang River can make the Yangtze River drain more smoothly; Strengthening flood control levees can prevent dam-break floods; The flood diversion and storage project can reduce the flood control pressure in the lower reaches of the Yangtze River.
(3) Policy measures: Prohibit land reclamation on steep slopes; Returning farmland to forests and lakes and developing forestry and animal husbandry in hilly areas according to local conditions; Ecological migration when necessary. Take measures to manage the existing forests in the middle and upper reaches of the Yangtze River and prohibit the destruction of forests.
(4) Agricultural production: develop agriculture rationally according to local conditions, pay attention to developing diversified agriculture, and prevent soil erosion in hilly areas.
(5) Technical measures: establish flood disaster early warning system; Using modern high-tech means, strengthen the monitoring of water regime in the Yangtze River basin and make timely forecasts.
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