基于能值理论的节水农业综合效益量化方法

节水农业工程的实施会对地区经济、社会和生态环境造成多方面的影响,建立科学合理的量化方法,定量分析节水农业综合效益,有利于规模化节水农业发展.基于生态经济学能值理论,分析了节水农业经济、社会和生态环境正负效益的构成,以能值作为统一的度量尺度,提出了节水农业综合效益的量化方法.以河套灌区沈乌灌域2016年节水改造工程为例进...

Research on Quantification Method of Comprehensive Benefits of Water-saving Agriculture Based on Emergy Theory

The implementation of water-saving agricultural project will have many impacts on regional economy, society and ecological environment. The establishment of scientific and reasonable quantitative methods to quantitatively analyze the comprehensive benefits of water-saving agriculture is conducive to the development of large-scale water-saving agriculture. Based on the emergy theory of ecological economics, this paper analyzes the composition of the positive and negative benefits of water-saving agricultural economy, society and ecological environment. The article uses emergy as a unified measurement scale and proposes a quantitative method for the comprehensive benefits of water-saving agriculture. This paper takes the 2016 water-saving renovation project in the Shenwu Irrigation Area of the Hetao Irrigation District as an example for calculation. The results showed that the comprehensive benefits of water-saving agriculture in the Shenwu Irrigation Area were 1.067 billion yuan, of which the ecological environment benefits accounted for the largest proportion, reaching 79.8%, the economic benefits accounted for 20.0%, and the social benefits accounted for 0.2%. We can see that water-saving agriculture has a greater impact on the ecological environment. While water-saving agriculture achieves positive benefits, it will also bring certain negative benefits. On the whole, water-saving agriculture has positive benefits greater than negative benefits. The method proposed in this paper can provide a new way to quantify the comprehensive benefits of water-saving agriculture.