【摘要】 本文在野外考察和4次遥感调查的基础上,分析了浙江省水土流失的时空演变。结果表明:1987年以后水土流失总体上有所好转,水土流失总面积减少,但强度以上的流失面积有增加趋势,新的人为水土流失未得到有效控制,且有加速趋势。全省11个地区中有9个呈现水土流失面积减少,但强度以上流失面积增加;90个县域中有83个存在水土流失分布。由于特有的自然和社会经济状况,浙江省水土流失一般散布在广大丘陵山区,其绝对侵蚀量小、相对侵蚀量大,潜在危险性很高。更多还原

【Abstract】 Based on the field survey and 4 series of remote sensing data of soil and water loss,the temporal and spatial change of soil and water loss in Zhejiang Province was analyzed. The results showed that: total area of soil and water loss decreased after 1987,but area of ≥ strong erosion grade increased and new man-made soil and water loss accelerated; 9 of the total 11 regions in Zhejiang showed the same changing tendency as the whole province. Soil and water loss distributed in 83 of the total 90 counties in Zhejiang. Due to the special natural,social and economic situations,soil and water loss scattered in the wide regions of hills and mountains in Zhejiang,although the absolute loss amount was low but the relative loss amount was enormous,so the potential fatalness is very high.更多还原