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浙江地处我国亚热带的东海之滨,气候温暖,雨量丰沛,土地肥沃,物产丰富,素以“鱼米之乡,丝茶之府,山海之利,……”而著称。近若干年来,由于工农业的发展,人口的增加,加上山林不合理垦殖滥伐,浙江省内,出现了大面积的土壤冲蚀,洪水频繁,河水含沙量增多,河床淤积,内河航道多处阻塞,失去舟济之利。这些灾难产生的
Zhejiang is located in China’s subtropical coast of the East China Sea, warm climate, abundant rainfall, fertile land, rich products, known as “Yumizhixiang, Silk Tea House, Shanhaishi ......” is known. In recent years, due to the development of industry and agriculture, the increase of population and the indiscriminate deforestation of reclaimed forests, a large area of soil erosion has occurred in Zhejiang Province. Floods have been frequent, the sediment concentration in the river has increased, the siltation of the riverbed, Many blocked, lost the boat economy. These disasters arise