| 1950s中期以来东北地区盐碱地时空变化及成因分析 |
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| 引用本文： | 张树文,杨久春,李颖,张养贞,常丽萍.1950s中期以来东北地区盐碱地时空变化及成因分析[J].自然资源学报,2010,25(3):435-442. |
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| 作者姓名： | 张树文 杨久春 李颖 张养贞 常丽萍 |
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| 作者单位： | 1.中国科学院东北地理与农业生态研究所,长春 130012；2.中国科学院研究生院,北京 100049 |
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| 基金项目： | 国家自然科学基金，中国科学院知识创新工程重大项目 |
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| 摘 要： | 论文以1950s中期1:100000地形图和2000年Landsat/TM影像为数据源，基于地学知识重塑1950s中期盐碱地分布状况，通过人机交互解译方式获取2000年盐碱地分布状况，然后采用GIS空间分析方法对近50年盐碱地时空变化特征进行分析。结果表明：①东北盐碱地主要分布在松嫩平原(占90%以上)和呼伦贝尔草原，盐碱地由58.51×104hm2增至219.31×104hm2，吉林省盐碱地扩展最显著，盐碱地面积最大；②盐碱化程度从以轻度盐碱化为主发展为以中重度盐碱化为主；③气候变化、水利灌溉设施和道路网建设、过牧和滥垦、油田开采等多种因素导致东北盐碱地扩大，但在局部地区由于生态恢复和改良利用措施、过量抽取地下水导致水位大幅度下降，使得盐碱地也有缩减。
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| 关 键 词： | 遥感 地理信息系统 盐碱地 东北地区 |
Changes of Saline-alkali Land in Northeast China and Its Causes since the Mid-1950s |
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| ZHANG Shu-wen,YANG Jiu-chun,LI Ying,ZHANG Yang-zhen,CHANG Li-ping.Changes of Saline-alkali Land in Northeast China and Its Causes since the Mid-1950s[J].Journal of Natural Resources,2010,25(3):435-442. |
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| Authors: | ZHANG Shu-wen YANG Jiu-chun LI Ying ZHANG Yang-zhen CHANG Li-ping |
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| Institution: | ZHANG Shu-wen1,YANG Jiu-chun1,2,LI Ying1,ZHANG Yang-zhen1,CHANG Li-ping1(1.Northeast Institute of Geography , Agroecology,CAS,Changchun 130012,China,2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | It is important to understand the spatio-temporal dynamic change characteristics of saline-alkali land in Northeast China,for it is thought as the important potential resources for paddy cultivation and building land in the meantime.Based on relief maps of the mid-1950s and Landsat TM images of 2000,we reconstructed the history distribution of saline-alkali land by integrating with graphics method and expert experience,and obtained its present distribution through interactive machine-artificial interpretati... |
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| Keywords: | remote sensing GIS saline-alkali land Northeast China |
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