桐柏大别山区土壤侵蚀敏感性评价及空间分布  

Assessment and spatial distribution of soil erosion sensitivity in Tongbai-Dabie Mountainous area

作　　者：张荣华[1] 刘霞[1] 姚孝友[2] 张光灿[1] 张荣[1] 常成[1] 

机构地区：[1]山东农业大学林学院水土保持系,山东农业大学农业生态与环境重点实验室,山东泰安271018 [2]水利部淮河水利委员会水土保持处,安徽蚌埠233001

出　　处：《中国水土保持科学》2010年第1期58-64,共7页Science of Soil and Water Conservation

基　　金：水利部淮河水利委员会“淮河流域植被演替规律与生态修复对策研究”“淮河流域生态修复机理和评价指标研究”;山东省优秀中青年科学家基金“水库集水区水源保护林对水环境调控机制研究”

摘　　要：基于RS、GIS技术平台,以修正通用土壤侵蚀方程(RUSLE)为基础,探讨降雨、土壤、地形、植被等因子对土壤侵蚀敏感性的影响,建立桐柏大别山区土壤侵蚀敏感性评价指标和分级标准,分析评价土壤侵蚀敏感性,为桐柏大别山区土壤侵蚀防治和生态工程建设提供科学依据。结果表明:桐柏大别山区土壤侵蚀敏感性较高,中度及中度以上敏感面积占总面积的46.34%,轻度敏感和不敏感区分别占总面积的44.30%和9.36%;在空间分布上,土壤侵蚀敏感性呈由南向北减弱特征,敏感性较高的区域主要分布在金寨县、霍山县、岳西县、舒城县、商城县等中南部山区县,而北部平原区敏感性较低;土壤侵蚀敏感性分布与土壤侵蚀强度具有较高的一致性,即土壤侵蚀敏感性高的区域也是目前土壤侵蚀严重的区域,表明区域土壤侵蚀受自然因素影响很大,但在局部地区由于人类活动干扰不同则存在一定的差异。Based on RS and GIS technology,guided by RUSLE,the influence of rainfall,soil,relief and vegetation on soil erosion sensitivity are studied,and the index system and classification standard of soil erosion sensitivity assessment in Tongbai-Dabie Mountainous area is established and soil erosion sensitivity is evaluated and analyzed in order to provide scientific basis to control soil erosion and construct ecological engineering.The results show that the erosion sensitivity of Tongbai-Dabie Mountainous area is relatively high,and the area over moderate level is 46.34 percent of the total area,and the mild level and the insensitive level is 44.30% and 9.36% respectively.In the spatial distribution,the sensitivity reduces from south to north,and high sensitivity is mainly in the south,such as Jinzhai County,Huoshan County,Yuexi County,Shucheng County,Shangcheng County and so on,and sensitivity in the north plain is low.The distribution of soil erosion sensitivity has high consistency with soil erosion intensity.The region of high sensitivity is also serious in soil erosion,indicating that regional soil erosion is highly influenced by natural factors,but in some areas there is a certain difference because of different human activities.

关 键 词：敏感性评价 土壤侵蚀 桐柏大别山区 

分 类 号：S157.2[农业科学—土壤学] X52[农业科学—农业基础科学]