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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (2): 250-256.

所属专题： 耕地保护

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

基于遥感的重庆市土地利用动态变化研究

王三1,赵伟2,黄春芳1   

  • 收稿日期:2009-07-22 修回日期:2009-09-15 出版日期:2010-01-20 发布日期:2010-01-20

A Study of Land Use Dynamic Change in Chongqing Based on the Remote sensing

  • Received:2009-07-22 Revised:2009-09-15 Online:2010-01-20 Published:2010-01-20

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摘要：

摘要：土地利用变化的动态研究是世界性的课题。本文选择重庆市经济高速发展的“一小时经济圈”为研究区域，以1994年、2000年和2006年的TM/ETM遥感影像为基础数据源，研究了重庆市土地利用动态变化，结果表明：研究区域各土地利用类型间转移明显，耕地资源流失严重且存在明显时空差异性，流失中心层即“形成层”包括城市化进程明显的九龙坡区、沙坪坝区、江北区和渝北区；“中间层”耕地流失程度次之，主要包括长寿区、渝北区部分地区以及渝西的铜梁、永川等地；“外围层”耕地变化主要以水田－旱地模式为主，包括万盛、南川、大足、潼南等区县。文章最后对研究区域的土地资源可持续利用提出了合理的建议。

关键词: 欧美杨, 欧美杨, 黄腐酸, 气孔导度, 蒸腾速率, 光合速率, 叶水势

Abstract:

Abstract: The study about dynamic change of land use is cosmopolitan topic. The rapid economic development of Chongqing which was named “an hour economy circle” was selected as the study erea.And remote sensing images of 2004,2000 and 2006 were selected as sources of primary data. This paper studied the dynamic changes of land use in Chongqing,and the results showed that various types of land use of study area transferred to each other apparently, cultivated land lose seriously with obvious spatio-temporal difference.“Cultivated land erosion central layer”included the places which urbanization was obvious, such as Jiulongpo,Shapingba,Jiangbei and Yubei.“Cultivated land erosion intermediate layer”mainly contained Changshuo,Tongliang,Yongchuan and so on. “Cultivated land erosion peripheral layer” covered Wansheng,Nanchuan,Dazu,Tongnan and so forth. At last, some suggestions about sustainable utilization of land resources of study area were put forward.