【摘要】 以济南市长清县为例 ,利用 GIS技术和遥感技术 ,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。在此基础上对土地资源进行分等定级研究和粮食生产潜力的计算 ,计算结果精确到 30 m× 30 m的像元分布数据。更多还原

【Abstract】 In this article , illustrated by the example of Changqing , a county of Jinan city , Shandong province, land fertility and cultivated land potential productivity are carefully studied . At first, multiple factors influencing land fertility are expounded , and the GIS and RS based synthetically evaluation is discussed .Then using the mechanism methodology and computing models ,five kinds of cultivated land potential productivity are computed and the results are precisely expressed as grid map that the size of it’s single grid unit is 900 square meters.更多还原