| 近50年来呼伦湖水系土地利用/覆被变化及其生态环境效应 |
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| 引用本文： | 杨久春,张树文. 近50年来呼伦湖水系土地利用/覆被变化及其生态环境效应[J]. 干旱区资源与环境, 2009, 23(2): 41-46 |
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| 作者姓名： | 杨久春 张树文 |
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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,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,长春,130012 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目:"东北地区100年LUCC数字重建"(编号:KZCX2-SW-320-1) |
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| 摘 要： | 本文基于1954-1957年地形图、1985-1988年和2005年TM遥感影像,采用人机交互方式提取得到1950年代中期、1980年代中期和2005年三期土地利用/覆被数据,并采用空间分析方法对其变化特征和转化特征进行时空分析。结果表明:1)呼伦湖水系草地面积明显减少,草地退化显著;2)水域面积出现萎缩趋势,沼泽地面积锐减;3)耕地和建设用地面积持续增加;4)沙化和盐碱化严重,尤其是盐碱地面积持续快速增加;5)吉布胡朗图苏木、阿穆古朗宝力格苏木和新宝力格苏木之间的三角地带是草地覆盖度降低、沼泽地萎缩和草地盐碱化现象集中和多发区域。土地利用/覆被的强烈变化导致当地生态环境恶化,生产力降低,威胁到区域生态环境和社会经济的稳定和可持续发展。
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| 关 键 词： | LUCC 生态环境效应 RS GIS 呼伦湖水系 |
Land Use/Cover Change and Its Eco-environmental Effects in Hulun-Lake Basin During the Past 50 Years |
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| YANG Jiu-chun,,ZHANG Shu-wen. Land Use/Cover Change and Its Eco-environmental Effects in Hulun-Lake Basin During the Past 50 Years[J]. Journal of Arid Land Resources and Environment, 2009, 23(2): 41-46 |
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| Authors: | YANG Jiu-chun ZHANG Shu-wen |
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| Affiliation: | 1.The Northeast Institute of Geography and Agricultural Ecology;CAS;Changchun 130012;China;2.Graduate School of Chinese Academy of Sciences;Beijing 100049;China |
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| Abstract: | Based on the relief map of 1954-1957,the TM images of 1985-1988 and 2005,the person-computer interactive methods were applied to interprete the informations,and the land use/cover data of the middle of 1950s,the middle of 1980s and 2005 were obtained.Based the spatial analysis technologies,the characteristics of land use/cover change and its transformation were analysed furtherly.It showed that the grassland degraded obviously.The water appeared shrinking,and the wetland reduced sharply.The farmland and bui... |
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| Keywords: | LUCC enviromental impacts RS GIS Hulun-Lake Basin |
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