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Position: Home > Articles > Emergy Analysis for Agro-ecosystem of Hu'nan Province in 2012 Bulletin of Soil and Water Conservation 2015,35 (1) 297-302

2012年湖南省农业生态系统的能值分析

作  者:
周科平;王明球;李斌;张岳
单  位:
中南大学资源与安全工程学院
关键词:
能值理论;生态经济;农业生态系统;湖南省
摘  要:
[目的]构建农业生态系统的能值评价体系,完善能值分析数据库。[方法]利用能值分析理论,选取能值密度、人均能值使用量、能值自给率、能值投资率、净能值产出率、能值货币比、环境负载率和可持续发展指数等8个指标;通过计算投入能值和产出能值的方法,对2012年湖南省农业生态系统能值进行了分析。[结果]8个评价指标的计算值分别为1.15×1012,3.4×1015 sej,22.35%,3.47,1.5,3.15×1012 sej/$,3.56和0.42。[结论]湖南省农业生态系统能值整体处于中等水平。解决农业能值投入结构是改善该农业生态系统的重要手段。
译  名:
Emergy Analysis for Agro-ecosystem of Hu'nan Province in 2012
作  者:
ZHOU Keping;WANG Mingqiu;LI Bin;ZHANG Yue;School of Resources and Safety Engineering,Central South University;
关键词:
emergy theory;;eco-economy;;agro-ecosystem;;Hu'nan Province
摘  要:
[Objective]To build the emergy evaluation system of agro-ecosystem.[Methods]Based on the emergy analysis theory,eight evaluation indicators including emergy density,emergy use per person,emergy self-sufficient ratio,emergy investment ratio,net emergy yield ratio,emergy dollar ratio,environmental loading ratio,and sustainable development index were chosen to establish the agro-ecosystem evaluating system.By calculating the input and output emergy,agro-ecosystem of Hu'nan Province in 2012 was analyzed.[Results]The calculated value of eight evaluation indicators mentioned above was 1.15×1012sej/m2,3.4×1015sej,22.35%,3.47,1.5,3.15×1012sej/$,3.56 and 0.42,respectively.[Conclusion]The agro-ecosystem of Hu'nan Province is overall at middle level,and changing the emergy investment structure is the main way to improve the agroecosystem.

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