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作为农业生产条件的土、水、肥,如一旦大量流失,将使土壤瘠薄,旱情加剧,农业产量低而不稳。流失的土壤——泥沙,造成水库淤积,降底水库效益,使引水口、渠道淤塞引水量减少,影响工农业用水;使抽水机磨损,降低抽水效率,使水轮机磨蚀影响发电出力,使河道变迁,河口淤塞,码头淤浅,给人民生命财产带来了极大的威胁和损失。如此严重的泥沙问题,一方面是自然地理、地貌、水文条件所造成,另一方面是
As agricultural production conditions of soil, water and fertilizer, once a large loss, will make the soil infertility, drought intensified, low and unstable agricultural output. Lost soil - sediment, resulting in siltation of reservoirs, down the bottom of the reservoir benefits, so that the diversion channel, channel silt water diversion to reduce the impact of industrial and agricultural water; make the pump wear and tear, reduce pumping efficiency, the turbine abrasion affect power generation, the river changes , River mouth siltation, silt pier, to the people’s lives and property has brought great threats and losses. Such a serious sediment problem, on the one hand is caused by natural geography, geomorphology and hydrological conditions, on the other hand is