| 三江平原不同流域水土流失变化特征分析 |
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| 引用本文： | 卜坤,张树文,闫业超,王文娟,张宇博. 三江平原不同流域水土流失变化特征分析[J]. 地理科学, 2008, 28(3): 361-368. DOI: 10.13249/j.cnki.sgs.2008.03.361 |
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| 作者姓名： | 卜坤 张树文 闫业超 王文娟 张宇博 |
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| 作者单位： | 中国科学院东北地理与农业生态研究所,吉林长春,130012;中国科学院研究生院,北京,100049;中国科学院东北地理与农业生态研究所,吉林长春,130012;南京信息工程大学遥感学院,江苏南京,210044;吉林大学软件学院,吉林长春,130012 |
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| 基金项目： | 中国科学院知识创新工程项目，水利部中国水土流失与生态安全科学考察项目 |
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| 摘 要： | 运用地理信息系统(GIS)结合美国通用水土流失方程(USLE),根据研究区现状合理选择USLE中水土流失各因子的计算方法,求算出三江平原1954年、1976年、1986年以及2000年的水土流失状况图。通过与2000年遥感普查结果进行对比,验证了方法的有效性。分别对三江平原六个流域水土流失变化情况进行分析,认为土地利用方式对水土流失有重要影响,农田开发是造成水土流失面积增加、强度增强的主要原因。土地垦荒活动强度降低以及部分旱地改种水田后,水土流失面积增加的幅度明显下降。
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| 关 键 词： | GIS USLE 三江平原 水土流失 农田化 |
| 收稿时间： | 2007-08-14 |
| 修稿时间： | 2007-12-13 |
Soil Erosion Change Characteristic of Different Watersheds of Sanjiang Plain during the Past 50 Years |
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| BU Kun,ZHANG Shu-Wen,YAN Ye-Chao,WANG Wen-Juan,ZHANG Yu-Bo. Soil Erosion Change Characteristic of Different Watersheds of Sanjiang Plain during the Past 50 Years[J]. Scientia Geographica Sinica, 2008, 28(3): 361-368. DOI: 10.13249/j.cnki.sgs.2008.03.361 |
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| Authors: | BU Kun ZHANG Shu-Wen YAN Ye-Chao WANG Wen-Juan ZHANG Yu-Bo |
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| Affiliation: | 1. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, Jilin 130012;2. Graduated University of the Chinese Academy of Science, Beijing, 100049;3. School of Remote Sensing, Nanjing University of Information and Technology, Nanjing, Jiangsu 210044;4. Software College, Jilin University, Changchun 130012 |
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| Abstract: | By reasonable selection of different factors in the Usual Soil Loss Equation(USLE),the serial of soil erosion maps of Sanjiang Plain in 1951,1976,1986 and 2000 are obtained under the support of GIS.The calculated result is approved to be valid comparison with the result of the second remote sensing survey for soil erosion of China in 2000.Then the change of soil erosion of the 6 watersheds in the Sanjiang Plain is analyzed to indicate that the way of land use impacts soil erosion significantly,and the reclamation is the main reason for the area increase intensity and of the soil erosion.The expansion rate of soil erosion slowed down obviously after the reduce of wasteland reclamation and replanting some dry land to paddy field. |
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| Keywords: | GIS USLE |
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