鲁中山区不同水土保持生态修复措施对土壤侵蚀的影响

Effects of different measures of soil and water conversation on soil erosion in rocky mountainous area of the middle of Shandong Province

为探索水土保持生态修复工程对区域土壤侵蚀的影响,运用3S技术手段,研究鲁中水土保持生态修复区土壤侵蚀的时空变化及4种生态修复措施下土壤侵蚀强度与面积的变化特征。结果表明:生态修复工程实施后,区域土壤侵蚀状况明显改善;各种生态修复措施都具有明显降低区域土壤侵蚀强度、减少土壤侵蚀面积的作用;不同生态修复措施类型防治土壤侵蚀作用最大的是残疏林补植,其他的依次为经济林退耕、荒坡造林和有林地封禁措施。研究成果可为科学评价生态修复工程效益和合理确定生态修复措施类型提供参考。

For exploring the effects of the ecological restoration project on soil erosion, monitor spatial and temporal changes of soil erosion and to explore the changes 3S technique is used to of soil erosion by four restoration measures both in area and in intensity. The result indicates： soil erosion in the region is being alleviated;soil erosion both in area and in intensity are reduced obviously by ecological restoration measures; the biggest function to control soil erosion in different measures is reinforcement planting in the open forest land, and others in turn are the economic forest taking back for afforestation, reforestation in the wild land on slopes and closing land for reforestation. The research results can provide the reference for the benefits appraisal of ecological restoration project and determining the reasonable measure of ecological restoration.