生态能质(eco-exergy)在水生生态系统建模和评价中的应用  

Applications of eco-exergy in ecological modeling and assessment of aquatic ecosystems

作　　者：李晴新[1] 冯剑丰[1] 朱琳[1] 

机构地区：[1]南开大学环境科学与工程学院,环境污染过程与基准教育部重点实验室,天津300071

出　　处：《生态学杂志》2011年第2期376-383,共8页Chinese Journal of Ecology

基　　金：国家水专项(2008ZX08526-003);天津市科技计划项目(08ZCGYSF00200)资助

摘　　要：生态能质(eco-exergy)是指系统从给定状态达到热力学平衡状态所做的功,可以度量生态系统的复杂生物化学组分及生态结构。系统具有的能质越大,有序化程度越高,稳定性也越强。生态能质和比生态能质(specific eco-exergy)指标能够评价水生生态系统健康状况,对水生生态系统演替阶段具有指示作用。本文阐述了生态能质的定义、生态学意义以及生态能质值和权重因子fi值的计算方法。对生态能质作为功能函数在水生生态系统结构动力学模型(structural dynamic models,SDMs)中以及作为生态指标在生态系统健康评价、生态恢复研究中的实际应用进行了总结。最后探讨了生态能质指标的局限性以及未来的发展。此外,文中建议将"eco-exergy"和"specific eco-exergy"统一翻译为"生态能质"和"比生态能质"。Eco-exergy is defined as the amount of work that a system can perform when the system is brought into thermodynamic equilibrium from a given state. It can be used to measure the complex biochemical components and ecological structure. A system with more exergy will present better ordering and stability. Eco-exergy and specific eco-exergy can be used to assess the status of aquatic ecosystem health,and indicate the certain succession stage in aquatic ecosystem restoration. This paper presented the definitions and ecological meanings of eco-exergy and specific eco-exergy as well as the calculation methods of eco-exergy and weighting factor fi,summarized the applications of eco-exergy as a goal function in structural dynamic models （SDMs） and as an ecological indicator for ecosystem health assessment and ecological restoration of aquatic ecosystems,and discussed the limitations and future development of eco-exergy. Furthermore,the unified translation of ＂eco-exergy＂ and ＂specific eco-exergy＂ in Chinese was suggested.

关 键 词：水生生态系统 生态能质 建模与评价 生态系统健康 生态恢复应用 

分 类 号：X171.1[环境科学与工程—环境科学]