地理学报 ›› 2012, Vol. 67 ›› Issue (5): 579-588.doi: 10.11821/xb201205001
• 人地关系 • 下一篇
闫慧敏, 刘纪远, 黄河清, 董金玮, 徐新良, 王军邦
收稿日期:
2010-12-29
修回日期:
2011-11-15
出版日期:
2012-05-20
发布日期:
2012-05-20
通讯作者:
刘纪远(1947-), 男, 研究员, 博士生导师, 中国地理学会会员(S110001625M), 主要从事资源环境遥感与土地利用/覆盖变化及其宏观生态效应研究。E-mail: liujy@igsnrr.ac.cn
基金资助:
YAN Huimin, LIU Jiyuan, HUANG Heqing, DONG Jinwei, XU Xinliang, WANG Junbang
Received:
2010-12-29
Revised:
2011-11-15
Online:
2012-05-20
Published:
2012-05-20
Supported by:
摘要: 20 世纪90 年代以来的快速城市化进程和1999 年开始启动的退耕还林草生态工程对耕地的分布与生产能力产生了重要影响。本研究应用由TM 遥感影像获取的1980s-2000 年与2000-2005 年两个时间段耕地变化数据,结合以多时相遥感数据为主要数据源的耕地生产力光能利用率遥感模型估算两个研究时段耕地生产力变化特征,比较城市化与退耕还林草政策主导下两个时期耕地转移对各区域耕地生产力的影响。研究结果表明:两个研究时段因城市占用损失的耕地生产力占土地利用变化(LUCC) 导致的耕地生产力减少总量比例均在60%以上。在20 世纪90 年代,全国新增耕地生产力总量比被占用耕地生产力高87%,耕地转移使中国耕地生产力增加。2000-2005 年间,退耕还林草政策的启动和快速城市化进程对耕地的持续占用导致耕地生产力占补正平衡指数由前一时段的正平衡变为负平衡,转出耕地生产力总量比新增耕地生产力高31%,耕地转为林草地和建设占用损失的耕地生产力分别较前一时段提高57%和85%。城市化与退耕还林草政策等驱动因素作用下耕地开垦区与占用区的空间分布差异使得耕地生产力占补平衡状态和趋势呈现明显的区域分异。
闫慧敏, 刘纪远, 黄河清, 董金玮, 徐新良, 王军邦. 城市化和退耕还林草对中国耕地生产力的影响[J]. 地理学报, 2012, 67(5): 579-588.
YAN Huimin, LIU Jiyuan, HUANG Heqing, DONG Jinwei, XU Xinliang, WANG Junbang. Impacts of Cropland Transformation on Agricultural Production under Urbanization and Grain for Green Project in China[J]. Acta Geographica Sinica, 2012, 67(5): 579-588.
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