水利水电科技进展2016，Vol.36Issue(4)：1-5,52,6.DOI:10.3880/j.issn.1006-7647.2016.04.001
区域农业生产系统用水正负效益分析及能值评估
Emergy evaluation of positive and negative effects of water utilization in regional agricultural production system
摘要
Abstract
Based on analysis of the input and output of various ecological flows in a regional agricultural production system, the positive and negative effects of agricultural water utilization were evaluated through emergy analysis from a perspective of ecological economics. Then, with the emergy as a normalized basis, the method of calculating the positive and negative effects of agriculture water utilization was improved. Using Zhengzhou City as an example, the positive and negative effects of water utilization in the agricultural production system of the city in 2011 were calculated. The results show that the positive effect was 1. 62 × 1021 J, and the negative effect was 6. 82 × 1020 J, which was about 42. 10% of the positive effect, indicating that the cityˊs agriculture water utilization was in a significantly negative situation. Improving the utilization efficiency of water resources and the accompanying renewable resources while minimizing the unreasonable investment and utilization of nonrenewable resources, and avoiding the harm caused by environmental pollution and overexploitation of groundwater are the keys to solving the problem of negative effects of agricultural water utilization.关键词
水资源/正负效益/农业生产系统/能值分析/郑州市Key words
water resources/positive and negative benefits/agricultural production system/emergy analysis/Zhengzhou City分类
天文与地球科学引用本文复制引用
郭溪,吴泽宁,王慧亮..区域农业生产系统用水正负效益分析及能值评估[J].水利水电科技进展,2016,36(4):1-5,52,6.基金项目
国家自然科学基金(51379191) （51379191）
