Abstract:

According to the ecological footprint theory,the crop porduction ecofootprint model based on the particularity of crop production was presented in this paper,in order to analysis the ecological surplus and deficit of crop production.The crop production ecofootprint and its composition in Jiangsu Province were evaluated and analyzed by using the crop production ecofootprint model in 2007.The results were compared with those which were evaluated by traditional method,and the differences were analyzed among them.When using the crop production ecofootprint model as the evaluation criterion,the ecological footprint,the ecological capacity and the ecological surplus of Jiangsu Province crop production in 2007 would be 0.232270 billion hm2,0.442670 billion hm2,0.028618 billion hm2 respectively.In addition,it also suggested that there was a significant spatial difference according to the crop production ecofootprint among the cities of Jiangsu Province.The crop productions of Nanjing,Wuxi，Suzhou，Changzhou and Nantong were in ecological deficit state,while other cities appeared different degree of ecological surplus state.The study results show that the crop production ecofootprint model was more objectively to analyze the land resource endowment and easy to decrease the enlargement phenomenon of ecological deficit which was caused by unreasonably designed model.The results also could be used as an important parameter for ecological impact assessment of planting.