会议论文

The Efficiency of Agro-ecosystem Around Dongting Lake Region of Hunan Province based on Emergy Evolution

中文

2018

250-264

第七届中国林业技术经济理论与实践论坛

第七届中国林业技术经济理论与实践论坛论文集

201311

长沙

中国林业经济学会<&wdkj&>中国林牧渔业经济学会

本校为第一机构

应用能值分析方法,以2000-2011年湖南省环洞庭湖区农业生态系统的能值投入和产出、能值综合指标时间序列数据为依据,对该区域农业生态效率进行分析.分析结果表明:研究期间,洞庭湖区农业生态系统能值产出率较高,产出相对优势明显;湖区存在较为严重的水土地流失问题;湖区农业对不可更新的工业辅助能值投入有很大依赖性,资源消耗的比重大,石油农业的烙印明显;化肥、农药、农膜等的能值投入长期处于较高水平,给湖区地下水造成了较为严重的污染;环境负载率在不断提高,可持续发展指数在不断降低,绿色GDP占传统GDP的比重不高.洞庭湖区农业发展是以高能耗,高污染为代价,转变农业发展方式迫在眉睫.

　　Based on the time series data of input and output of ago-ecosystem around Dongting Lake region of Hunan Province from 2000 to 2011, this paper used the emergy analysis method, analyzed agricultural ecological efficiency of this region.In the study period, this ecological system's output capacity was high.But serious soil and water loss problem exists in this region, and it depended on the input of nonrenewable industry auxiliary energy serious.The resource consumption accounted for a large proportion.For a long time, the input of fertilizer...