| 近50年来松嫩平原西部土地利用变化及驱动力分析 |
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| 引用本文： | 刘殿伟,宋开山,王丹丹,张树清.近50年来松嫩平原西部土地利用变化及驱动力分析[J].地理科学,2006,26(3):277-283. |
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| 作者姓名： | 刘殿伟 宋开山 王丹丹 张树清 |
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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, 吉林 长春 130012;2. 吉林大学地球探测与信息学院, 吉林 长春 130024 |
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| 基金项目： | 中国科学院知识创新项目(KZCX3-SW-356)，湿地GEF数据库项目资助 |
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| 摘 要： | 在遥感和地理信息系统技术支持下,对松嫩平原西部土地利用方式、景观格局的动态变化进行定量研究。结果表明:过去近50年里,松嫩平原西部耕地净增加29.65×104hm2,其中草地与湿地对耕地的增加贡献最大;草地减少70.29×104 hm2,除部分草地转化为耕地外,退化为盐碱地、沙地也是草地大量减少的一个重要原因;松嫩平原西部现有沼泽湿地面积44.88×104 hm2,近50年来减少62.54%。景观破碎化严重,不同土地利用类型间频繁转化,表明各种土地景观间存在不稳定因素,自然和人为因子在景观的转化中有不可忽略的作用,但人为因子的作用更显著。
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| 关 键 词： | 土地利用变化 景观指数 遥感 松嫩平原西部 |
| 文章编号： | 1000-0690（2006）03-0277-07 |
| 收稿时间： | 08 12 2005 12:00AM |
| 修稿时间： | 2005-08-122006-02-26 |
Dynamic Change of Land-use Patterns in West Part of Songnen Plain |
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| LIU Dian-Wei,SONG Kai-Shan,WANG Dan-Dan,ZHANG Shu-Qing.Dynamic Change of Land-use Patterns in West Part of Songnen Plain[J].Scientia Geographica Sinica,2006,26(3):277-283. |
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| Authors: | LIU Dian-Wei SONG Kai-Shan WANG Dan-Dan ZHANG Shu-Qing |
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| Institution: | 1. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, Jilin 130012;2. Jilin University, Changchun, Jilin 130024 |
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| Abstract: | Songnen Plain is one of the commercial grain bases of China, which belongs to ecological fragile regions.Based on remote sensing and GIS technologies, the dynamic changes of land-use patterns in western Songnen Plain were analyzed quantitatively.The results show that great change has occurred in spatial pattern of land-use in the past 50 years.The area of cultivated land increased 29.65?104 ha, which mainly converted from grassland and wetland.And 70.29?104 ha of grassland lost in the past 50 years, except for conversion to cultivated land, desertification, salinization and grassland degradation can also account for grassland losing.Wetlands have decreased 62.45% since 1954.The study also indicated that the fragmentation of grassland, forestland, wetland and unused land were severe.The maximal patch area and maximal patch perimeter were all decreased.The conversion ratio of different land-use types were severe in the west part of Songnen Plain, which indicated that different land-use types were unstable, anthropogenic and natural factors both play important roles in this process, while human actives affect the process more severely. |
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| Keywords: | land-use change landscape indices Songnen Plain |
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