| 松嫩平原土地沙化现状与动态变化 |
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| 引用本文： | 张哲寰,赵海卿,李春霞,刘强,马宏伟,朱巍,张庭秀.松嫩平原土地沙化现状与动态变化[J].地质与资源,2008,17(3):202. |
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| 作者姓名： | 张哲寰 赵海卿 李春霞 刘强 马宏伟 朱巍 张庭秀 |
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| 作者单位： | 1. 沈阳地质矿产研究所, 辽宁 沈阳 110033;2. 中国地质大学水资源与环境学院, 北京 100083;3. 吉林省地质调查院, 吉林 长春 130061 |
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| 基金项目： | 中国地质调查局松嫩平原地下水资源及其环境问题调查评价项目 |
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| 摘 要： | 松嫩平原沙地主要分布于松嫩平原的中西部地区，包括松嫩沙地和科尔沁沙地的一部分.沙地分布区处于半干旱地区，年降水量在350~450 mm，是松嫩平原生态环境变化的敏感地区.采用RS和GIS集成技术，对松嫩平原1986年和2001年的沙地进行遥感解译，结合野外调查，研究松嫩平原沙地分布的现状及其动态变化.结果表明，松嫩平原土地沙化有进一步发展的趋势，2001年沙地面积比1986年增加了861.1 km2，沙地平均每年以0.44%的速度扩展.其中，重度沙地变化率最大，中度沙地面积数量增加最多，轻度沙地略有减少.
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| 关 键 词： | 松嫩平原 土地沙化 动态变化 |
| 收稿时间： | 2007-12-10 |
CURRENT SITUATION AND CHANGING TREND OF THE LAND DESERTIFICATION IN SONGNEN PIAIN |
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| ZHANG Zhe-huan,ZHAO Hai-qing,LI Chun-xia,LIU Qiang,MA Hong-wei,ZHU Wei,ZHANG Ting-xiu.CURRENT SITUATION AND CHANGING TREND OF THE LAND DESERTIFICATION IN SONGNEN PIAIN[J].Geology and Resources,2008,17(3):202. |
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| Authors: | ZHANG Zhe-huan ZHAO Hai-qing LI Chun-xia LIU Qiang MA Hong-wei ZHU Wei ZHANG Ting-xiu |
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| Institution: | 1. Shenyang Institute of Geology and Mineral Resources, shenyang 110033, China;2. College of Water Resources and Environment, China University of Geosciences, Beijing 100083, China;3. Jilin Institute of Geological Survey, Changchun 130061, China |
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| Abstract: | The desertified lands in Songnen plain are distributed mainly in the center and west of the plain,including the Songnen desert land and a part of Horqin desert land.The desertification is located in the semiarid area,where the annual precipitation is 350 -450 mm,with sensitive ecologic environment.The desertification of Songnen plain in both 1986 and 2001 are interpreted by RS and GIS technique.Combined with field investigation,the current situation and changing trend of the desertification is studied.The result reveals that the desertification in Songnen plain is in a developing trend.From 1986 to 2001,the area of desertified land increased 861.1 km2,in an expanding rate of 0.44% annually.The heavily desertified land changed in the greatest expanding rate.The area of moderate desertified land increased the most; while that of the lightly desertified land decreased a little. |
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| Keywords: | Songnen plain desertification changing trend |
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