摘要
本文以长清县为例 ,利用遥感和地理信息系统技术 ,从综合肥力的观点出发 ,科学地考虑影响土地生产力水平的多种因素 ,确定合理的数学模型 ,对土地生产力水平进行定量化评价计算。并在此基础上对土地资源进行分等定级和粮食生产潜力的估算。
In the article , illustrated by the example of Changqing , a county of Jinan city , Shandong province, farm land fertility and potential productivity are carefully studied . At first, multiple factors influencing soil fertility are expounded , and the mathod of GIS based on synthetical evaluation is discussed. Then using the mechanism methodology and computing models ,five kinds of potential productivity are computed and the results are precisely expressed as grid map in which the size of its single grid is 900 square meter.
出处
《中国人口·资源与环境》
CSSCI
北大核心
2001年第S2期135-137,共3页
China Population,Resources and Environment
基金
山东省教育厅研究课题 (J99E0 2 )
关键词
农用土地生产力
综合评价指数
生产潜力
farm land fertility
index of synthetical evaluation
potential productivity
