基于GIS的喀斯特流域土壤侵蚀敏感性研究——以贵州省三岔河流域为例  

The study of the soil erosion sensitivity based on karst watershed for GIS——Taking the three cha he basion in Guizhou province as an example

作　　者：刘丽[1] 梁虹[1] 焦树林[1] 代阿娜 

机构地区：[1]贵州师范大学地理与环境科学学院,贵州贵阳550001 [2]中国南方喀斯特研究院,中国贵阳550001

出　　处：《贵州师范大学学报（自然科学版）》2015年第2期12-17,共6页Journal of Guizhou Normal University：Natural Sciences

摘　　要：以流域为单元进行土壤侵蚀敏感性研究,可以定量识别土壤侵蚀的敏感区域,进而探索土壤侵蚀空间分布规律和评价流域治理效益,甚至对水土保持规划与监测具有重要意义。本文以贵州省三岔河流域为研究区,借助GIS技术,并参考土壤侵蚀敏感性评价的研究,获得该流域土壤侵蚀的敏感性评价指标,以对土壤侵蚀敏感性进行综合评价。分析结果表明:1)该流域土壤侵蚀敏感性较高,土壤侵蚀敏感区域面积为6 728.81km2,占整个流域面积的88.25%;2)将土壤侵蚀敏感性评价结果与土壤侵蚀现状评价进行对比,两者表现出的结果明显不一致;3)该流域土壤侵蚀敏感性以高度敏感为主。从空间分布上看,中度以上敏感区集中分布于赫章县、纳雍县、六枝特区、织金县、普定县和西秀区西北部。The study of the soil erosion sensitivity based on the watershed,which can quantitatively identify sensitive areas with high possibility of being eroded,explore soil erosion spatial distribution,and evaluate the benefit of watershed management,even conservation planning and environment monitoring on soil and water.Using GIS technology and referencing the research on the sensitivity evaluation of soil erosion,this paper analyzed the watershed of San-cha-he in Guizhou province,obtained the basin soil erosion sensitivity evaluation indicator,and integrated assessment on sensitivity of soil erosion.And results show that：1） The soil erosion sensitivity is very high in San-cha-he watershed,the area of soil that was eroded is 6 728.81km2,which is 88.25％ of the whole area;2） By comparing the sensitivity of soil erosion evaluation with current situation of soil erosion,we can see that they are obviously different;3） The soil erosion sensitivity in San-cha-he area is given priority to high.And on the spatial distribution of it,we can learn that moderate or more sensitive area located in Hezhang County,Nayong County,six Zhi,Zhijin County,Puding county and Xixiu District in the northwest.

关 键 词：土壤侵蚀 GIS 敏感性评价指标 综合评价 

分 类 号：F301.24[经济管理—产业经济]