[1]王志杰,苏嫄,王志泰*. 基于GIS的汉江上游文川河流域土壤侵蚀特征研究[J].西北林学院学报,2016,31(1):199-205.[doi:10.3969/j.issn.1001-7461.2016.01.35]
　WANG Zhi-jie,SU Yuan,WANG Zhi-tai*. Characteristics of Soil Erosion in Wenchuanhe Watershed of Hanjiang River Based on GIS[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2016,31(1):199-205.[doi:10.3969/j.issn.1001-7461.2016.01.35]
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 基于GIS的汉江上游文川河流域土壤侵蚀特征研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第31卷
期数:
2016年第1期
页码:
199-205
栏目:
出版日期:
2016-01-31

文章信息/Info

Title:
 Characteristics of Soil Erosion in Wenchuanhe Watershed of Hanjiang River Based on GIS
文章编号:
1001-7461(2016)01-0199-07
作者:
 王志杰1; 苏嫄2; 王志泰3*
 （1.贵州大学 生命科学学院，贵州 贵阳 550025；2.陕西理工学院 文学院，陕西 汉中 723000； 3.贵州大学 林学院， 贵州 贵阳 550025）
Author(s):
 WANG Zhi-jie1; SU Yuan2; WANG Zhi-tai3*
 (1.College of Life Sciences,Guizhou University,Guiyang,Guizhou 550025,China; 2.School of Literature,Shaanxi University of Technology,Hanzhong,Shaanxi 723000,China; 3.College of Forestry,Guizhou University,Guiyang,Guizhou 550025,China)
关键词:
 ; 土壤侵蚀; 南水北调中线水源地; 汉江上游; 文川河流域; GIS
Keywords:
 ; soil erosion;  South-to-North Water Transfer Project;  upper reaches of Hanjiang River;  Wenchuanhe watershed;  GIS
分类号:
S157
DOI:
10.3969/j.issn.1001-7461.2016.01.35
文献标志码:
A
摘要:
 土壤侵蚀是南水北调中线水源地汉江上游地区亟待解决的关键问题。以汉江上游文川河流域为研究对象，基于遥感和GIS技术，以Landsat TM遥感影像和DEM为数据源，分析了文川河流域2011年土壤侵蚀及其空间分布特征。结果表明：文川河流域土壤侵蚀程度为21.62%，以轻度和中度侵蚀为主；低山丘陵区是土壤侵蚀的主要发生区。占流域面积35%的低山丘陵区，其侵蚀面积占侵蚀总面积的65%；流域内土壤侵蚀主要发生在坡度较大的区域，特别是15°以上的区域，且呈现出随坡度增大，侵蚀越严重的特征；坡耕地、草地和低山丘陵区的林地土壤侵蚀严重。仅占流域面积6%的坡耕地，其侵蚀面积占侵蚀总面积的30%。研究结果说明汉江上游低山丘陵区的土壤侵蚀不容忽视，应作为今后生态环境保护和水土保持的重点区域，加强坡耕地土壤侵蚀治理，加快植被恢复与建设，改善生态环境，控制水土流失，以保障南水北调中线调水工程的安全运行和工程沿线区域的生态环境质量。
Abstract:
 Soil erosion is the key environment problem in the water source region of middle route of South-to-North water transfer project.Taking the Wenchuanhe watershed in the upper reaches of Hanjiang River as the research object,using the Landsat TM images and DEM data,the soil erosion and its spatial characteristics of Wenchuanhe watershed in 2011 were analyzed based on GIS and RS.The results shown that:the soil erosion degree of Wenchuanhe watershed was 21.62%,and the soil erosion intensity was major in mild erosion and moderate erosion.Low mountain and hill regions were the mainly areas of soil erosion,accounted for 35% of the Wenchuanhe watershed,however,the soil erosion area occurred in these regions was 65% of the total erosion area.The soil erosion was mainly distributed in the larger slope gradient regions,especially in the regions which slope gradient was above 15°.Furthermore,the soil erosion was more serious with the increase of slope gradient.The soil erosion in slope farmland,grassland and the woodland in the low mountain and hill regions were more serious than that in other land uses.The area of slope farmland was only accounted for 6% of the total watershed area,however,the soil erosion area occurred on the slope farmland was above 30% of the total erosion area in the watershed.Therefore,it was concluded that the low mountain and hill regions in the Hanjiang River were the key areas for the ecological environment protection and soil and water conservation in future.It should strengthen slope farmland soil erosion management,accelerate the vegetation restoration and construction,improve the ecological environment,and control soil erosion,to ensure the safe operation of the middle route of south-to-north water transfer project and the regional ecological environmental quality.

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备注/Memo

备注/Memo:
 收稿日期：2015-03-25修回日期：2015-07-07
基金项目：陕西理工学院科研计划资助项目 (SLGKYQD2-32)；贵州省社会发展攻关项目（黔科合SZ字[2009]3026）。
作者简介：王志杰，男，讲师，博士，研究方向：土壤侵蚀、遥感与GIS应用。Email：wzhijie@126.com
*通信作者：王志泰，教授，博士，研究方向：退化生态系统恢复。E-mail：wzhitai@163.com
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