| 三江源地区土壤侵蚀特点 |
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| 引用本文： | 吴万贞,周强,于斌,马灿.三江源地区土壤侵蚀特点[J].山地学报,2009,27(6). |
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| 作者姓名： | 吴万贞 周强 于斌 马灿 |
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| 作者单位： | 青海师范大学生命与地理科学学院地理科学系,青海,西宁,810008 |
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| 基金项目： | 国家自然科学基金项目(40261003)三江源地区及其青南高原土地退化研究. |
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| 摘 要： | 三江源地区地域辽阔,土壤侵蚀复杂多样.近年来土壤侵蚀加剧,生态环境严重退化.以2000年土壤侵蚀调查的数据成果为基数.并与更新后的2005年数据成果比较,进行土壤侵蚀动态变化分析.对三江源地区不同类型土壤侵蚀区的土壤侵蚀现状做了较全面的分区评价.同时对作为典型区域的黄河源头区12个县的2000年1:10万Landsat 5 TIM假彩色合成影像,通过野外调查建它解译标志来分析该区植被覆盖状况,对该区典型区域的土壤侵蚀现状做了定量评价.根据评价结果,对三江源地区土壤侵蚀的发展趋势做了预测.
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| 关 键 词： | 三江源地区 土壤侵蚀 评价 |
Characteristics of Soil Erosion in Three Rivers'Sources Natural Reserve |
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| WU Wanzhen,ZHOU Qiang,YU Bin,MA Can.Characteristics of Soil Erosion in Three Rivers'Sources Natural Reserve[J].Journal of Mountain Research,2009,27(6). |
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| Authors: | WU Wanzhen ZHOU Qiang YU Bin MA Can |
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| Abstract: | There is a diversity of soil erosion in the Three.rivers' Headstream Region.Soil has been increasingly eroded recently and the eco-environment is deteriorating there.To conserve the reserve.on the basis of the obtained data in the survey of soil erosion in 2000 and the comparison between these data and the updated and rivised data in 2005.an analysis of the dynamic changes in soil erosion has been carried out and an overall assessment of the soil erosion status quo has been made in different kinds of soil erosion areas in the Three.rivers' Headstream Regio.The 1:100 000 Landsat TM5 false colour composite images of 12 typical counties at the Yellow River sources in 2000 are interpreted based 011 the field investigation,so the vegetation state is found out,the status quo of soil erosion in the typical areas is assessed quantitatively and the trend of soil erosion in the Three-rivers' Headstream Region is forecasted. |
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| Keywords: | the Three-rivers' Headstream Region soil erosion assessment |
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