安徽省池州市农业生态系统能值分析

Emergy Analysis of Agricultural Ecosystem in Chizhou of Anhui

应用能值理论及分析方法,计算出池州市农业生态系统2010—2015年期间的能值投入、产出变化以及能值指标值,研究池州市农业生态系统近6年的发展特点及趋势和该地区农业可持续发展状况。结果表明:(1)池州市农业生态系统能值总投入逐年增加,其中不可更新工业辅助能值6年内增长了1.94%,增长幅度最高;(2)研究区间内,净能值产出率增长了0.38,呈现上升趋势,农业经济稳定增长;(3)无偿能值投入占比0.44,环境负载率波动增长,表征该地区农业发展对环境造成压力;(4)2015年池州市农业生态系统可持续发展指数0.93,相较2010呈现缓慢上升趋势,表明池州市农业整体发展水平较低,但可持续发展能力有较强上升空间。

This paper applies emergy theory and analysis method to calculate the emergy input,output and emergy index from 2010 to 2015 in order to study the development characteristics and trends of the late six years in Chizhou. The results show that：（ 1） Total emergy input increase year by year,and the industrial auxiliary emergy is increased by 1. 94 percent and it has the highest average annual growth rate;（ 2） In the study interval,the output rate of net emergy is increased by 0. 38,emergy yield ratio shows an increasing trend,agricultural economic growth is stable;（ 3） The value of free emergy is 0. 44,environmental loading ratio is high,the development of Chizhou agricultural is putting pressure on the environment;（ 4） In 2015,the sustainable development index of agricultural ecosystem in Chizhou was0. 93,showing a slow upward trend compared with 2010 and the overall level of agricultural development is low,but the ability of sustainable development becomes more and more strong.