基于生态环境损失的农业生态系统能值分析  

Analysis of agro-ecosystem emergy based on ecological environment loss

作　　者：郭瑞丽[1] 齐雪艳[2] 石岳峰[1] 李红亮[1] 

机构地区：[1]黄河流域水资源保护局,河南郑州450004 [2]黄委会河南水文水资源局,河南郑州450004

出　　处：《东北水利水电》2016年第11期49-51,72,共3页Water Resources & Hydropower of Northeast China

摘　　要：针对目前农业生态系统能值分析研究中没有考虑生态环境损失的问题,提出了基于生态环境损失的农业生态系统能值分析研究思路和方法。以郑州市为例,对其2005-2014年农业生态系统进行能值计算和分析。结果表明,郑州市近10年农业生产造成的平均生态环境损失为2.21×10^(21)sej,占能值产出的9.08%;扣除农业生态环境损失后,平均净能值产出率从3.75下降到3.41,平均可持续发展指数从1.45下降到1.32,说明农业生态环境损失对系统生产效率和可持续影响比较显著。According to the problems of not considering ecological environment loss in the study on the agroecosystem emergy analysis, the research thinking and method of agro-ecosystem emergy analysis are put forward based on the ecological environment loss. Taking Zhengzhou City as the research object, the paper calculates and analyzes the agro-ecosystem emergy from 2005 to 2014. The results show the average ecological environment loss is 2.21×1021sej caused by agriculture produce in recent 10 years, which accounted for 9.08% of the output value.After deducting the loss of agricultural ecological environment, the average net emergy output rate decreases from3.75 to 3.41, the average sustainable development index decreases from 1.45 to 1.32, which indicates that the agricultural ecological environment loss has the significant impact on production efficiency and sustainability of the system.

关 键 词：生态环境损失 农业生态系统 能值分析 郑州市 

分 类 号：X171.4[环境科学与工程—环境科学]