基于能值理论的江苏省稻麦秸秆综合利用生态足迹分析

Analysis of Ecological Footprint of Rice and Wheat Straw Comprehensive Utilization Based on Emergy Theory in Jiangsu Province

在能值理论分析的基础上,采用修正的生态足迹模型,利用2012年江苏省的统计资料,分析江苏省稻秸和麦秸的生态足迹盈亏。结果表明,2012年江苏省稻秸与麦秸的人均生态承载力分别为0.095 5和0.054 4 hm2,但人均生态盈余/赤字却表现出较大的差异,稻秸人均生态盈余为0.018 6 hm2,麦秸人均生态赤字为0.018 3 hm2。即稻秸的利用尚处于区域生态经济系统的承载能力之内,还存在一定程度的秸秆消纳空间,而麦秸的利用不尽合理,甚至存在过度利用现象,已超出区域生态经济系统的承载能力。

Based on emergy theory and statistical data of Jiangsu Province in 2012, this study adopts the modified ecological footprint modal to analyze the ecological footprint of rice and wheat straw. The results showed that ecological capacity per capita rice straw and wheat straw was 0.095 5 hm^2 and 0.054 4 hm^2, respectively. However, per capita ecological surplus / deficit had shown large differences. The per capita ecolog- ical surplus of rice straw was 0.018 6 hm^2 while the ecological deficit per capita of wheat straw was 0.018 3 hm^2. That is to say carrying capacity utilization of rice straw was still in the regional ecological economic system, and there was a certain degree of straw consumptive space. On the contrary, there were unreasonable utilization of wheat straw, and this phenomenon had exceeded the carrying capacity of the regional ecological e- conomic system.