| 近20年玛多县土地沙漠化时空变化特征分析 |
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| 引用本文： | 郑标,殷青军,李文奇,余金林,刘金锋.近20年玛多县土地沙漠化时空变化特征分析[J].科技资讯,2013(26):127-128. |
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| 作者姓名： | 郑标 殷青军 李文奇 余金林 刘金锋 |
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| 作者单位： | [1]青海师范大学生命与地理科学学院,青海西宁810008 [2]青海景图信息技术有限公司,青海西宁810002 |
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| 摘 要： | 以TM遥感影像数据为信息源,依据沙化荒漠化土地分类系统和土地利用类型分类系统,在地理信息系统的支持下,对青海省玛多县1990年,2000年以及2010年的TM影像进行了目视解译,分析了该地区近20年来土地沙漠化时空变化规律.1990年至2000年,由于自然因素和人为因素的综合影响,玛多县沙漠化土地总面积增加了149.7 km2,生态环境恶化,2000年至2010年,玛多县沙漠化土地总面积减少了144.08 km2,但是生态环境没有恢复到1990年的水平.
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| 关 键 词： | 遥感影像数据 沙化荒漠化 地理信息系统 时空变化 生态环境 |
Analysis of Spatial and Temporal Variation Characteristics of Desertification Land of MaDuoCounty During 20 Years |
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| Institution: | ZHENG Biao, YIN Qing-jun,LI Wen-qi, YU Jing-lin, LIOU Jing-feng (1 .Institute of geographical＇ science and life of qinghai normal university,Qinghai Xining,810008,China;2.Qinghai landscape information technology Co., LTD,Qinghai Xining, 810002, China) |
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| Abstract: | Based on TM remote sensing image data sources,according to the desertification land desertification classification system and classification system of land use types,with the support of geographic information system,1990,2000 and 2010 TM images of MaDuoCounty in qinghai have been visually interpretated,we have analyzed the space--time change of desertification of the region during the past 20 years.From 1990 to 2000,due to the combined influence of natural factors and human factors,desertified land area has increased by 149.7 square kilometers in MaDuoCounty,the deterioration of ecological environment,from 2000 to 2010, desertification land area has reduced by 144.08 square kilometers in MaDuoCounty,but the levels of ecological environment did not return to 1990s. |
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| Keywords: | Remote sensing image dataIDesertifieation Geographic information system Change of time and space Ecological environ-ment |
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