卧龙湖湿地生态系统与生态经济可持续发展的能值分析  

Emergy Analysis of Wolong Lake Wetland Ecosystem and Eco-economic Sustainability

作　　者：黄佳丽 张依然[2] 王力 常文越[2] 赵光辉[2] 刘智[2] 

机构地区：[1]沈阳市环保局康平分局,辽宁沈阳110500 [2]沈阳环境科学研究院,辽宁沈阳110016

出　　处：《环境保护科学》2015年第3期139-143,共5页Environmental Protection Science

基　　金：沈阳市科学事业费科技项目(130082)资助

摘　　要：采用能值理论,评估了卧龙湖湿地多年平均能值投入及其生态服务价值,并分析了卧龙湖湿地生态系统结构功能及系统内外的物质、能量流动特征。结果显示,卧龙湖湿地生态系统的年能值投入为4.94×101 9sej,其中自然资源能值投入为1.75×101 9s ej,经济反馈的能值投入为3.60×1019sej:能值投资率为2.06,能值自给率仅为0.27,且环境负载率较高。此外,卧龙湖湿地生态系统能提供较高的生态系统服务价值,尤其是蒸腾作用,为每年每公顷269万美元,远远高于其他湿地。对研究结果的分析表明,区域经济发展对于卧龙湖湿地的依赖性很强,而目前卧龙湖湿地的环境负载率较高,因此,加强对卧龙湖湿地的保护和恢复,对于促进区域经济的可持续发展具有重要意义。In this paper, emergy theory was used to evaluate the annual average emergy input of Wolong Lake wetland for years and its ecological service value. The structure and functions of the ecological system of Wolong Lake wetland and the internal and external material and energy flow characters of the system were analyzed. The results showed that the average emergy input of Wolong Lake wetland was 4.94×10^19 sej/a, including 1.75×10^19 sej/a of natural resource emergy input and 3.60×10 ^19sej/a of economic feedback emergy input. Emergy investment ratio and emergy self-support ratio was 2.06 and 0.27 respectively, and environment loading ratio was higher. Additionally, the ecological system of Wolong Lake wetland could provide higher ecosystem service value, especially in terms of transpiration function which was 2.69 million US dollars per hectare annually and much higher than the other wetlands. Analysis of the research results indicated that regional economic development was highly dependent on Wolong Lake wetland. However, at present, the environment loading ratio of the studied wetland is quite higher, so strengthening of protection and restoration of Wolong Lake wetland is of greatsignificanceforpromotionofthesustainabilityofregionaleconomicdevelopment.

关 键 词：能值 能值转换率 可持续性 生态经济系统 

分 类 号：X171.1[环境科学与工程—环境科学]