Agricultural Land Use Changes and Its Implications on Food Security in Northeast China

摘要：

　　It is of great significance to study the changing patterns of current regional cultivated land and explore its impact on grain productivity.In this paper,the changes were detected from multi-temporal Landsat TM/ETM+ images of 1993 and 2003 for Northeast China.Then considering the natural and social factors systematically,the comprehensive quality of cultivated land was evaluated.On the basis of field survey data,agricultural statistics data and considering the natural and socio-economic factors,this paper analyzed the impact of cultivated land change on the grain production capacity in terms of cultivated land quantity and quality.Finally,pre-warning on grain production safety in Northeast China was carried on by early warning model,which was developed considering the change of grain yield from two respects of cultivated land quality and quantity.

作者: LI Zhibin CHEN Youqi YAO Yanmin HE Yingbin XU Xinguo YU Qiangyi TANG Pengqin

作者单位: The Lab of Resources Remote Sensing and Digital Agriculture,Ministry of Agriculture,Beijing 100081,P.R.China;Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081,P.R.China

会议类型: 国际会议

会议名称: Woekshop on Agricultural Land Use and its Effect in APEC Member Economies(APEC地区农业土地利用及其影响国际研讨会)

会议地点: 北京

会议语种:英文

页码: 238-255

在线出版日期: 2009-10-19（万方平台首次上网日期，不代表论文的发表时间）