基于能值分析的农业生态系统综合效率研究与进展

Advances in Emergy Analysis for Overall Efficiency of Agro-ecosystems

能值理论与分析方法是目前探讨农业生态系统综合效率最有效的研究方法之一。本文主要介绍能值理论与分析方法的产生、发展及研究意义,并将能值分析与传统能量分析、生态足迹和生命周期评价等方法进行比较,分析不同方法的异同点与相应特色。概述能值分析在我国农业生态系统综合效率评价研究上的最新进展,并讨论相关研究中存在的问题,提出今后研究的方向与建议。

Emergy analysis is one of the most effective means to study overall efficiency of the agro-ecosystems.This article briefly introduces the beginning and development of the theory and methods of the science.A comparison with the traditional energy analysis,ecological footprint,life cycle assessment,etc.is presented.Recent advances on its application for overall efficiency of agro-ecosystems are summarized.And,some existing problems and possible future direction of research in the field are also discussed.