基于GIS的长江三角洲农牧系统生产力综合评价

Productivity Comprehensive Evaluation System based on GIS for Cropping-livestock System of Yangtze Delta Plain

通过系统集成 ,将农业生态经济分区、农牧系统综合评价等应用模型与 GIS进行集成 ,构建了农区农牧系统生产力综合评价系统 .采用该系统把长江三角洲的生态经济划分为 3个区 :北部经济次发达区 ( I区 )、中部经济发达区 ( II区 )和南部经济次发达区 ( III区 ) .同时 ,对长江三角洲农牧系统生产力进行综合分析 ,发现长江三角洲农牧系统的生产力具有大幅度提高的潜力 。

With the system integration between GIS and applied models of agricultural eco-ecological classification and cropping-livestock system evaluation, the compre- hensive evaluation system for cropping-livestock system is established in this paper. The classification results show that the plain can be divided into three regions: the less developed region in north(Region Ⅰ), the developed region in the middle(Region Ⅱ) and the less developed region in the south(Region Ⅲ). Meanwhile, the evaluation results show that comprehensive productivity of cropping-livestock system has great increasement potentialities, and there is a notable spatial hierarchic difference in Yangtze delta plain.