应用生态学报2012，Vol.23Issue(3)：812-818,7.
基于Ecopath模型分析分水江水库生态系统结构和功能
Structure and function of Fenshuijiang Reservoir ecosystem based on the analysis with Ecopath model
摘要
Abstract
Based on the 2008-2009 survey data of fishery resources and eco-environment of Fenshuijiang Reservoir, a mass balance model for the Reservoir ecosystem was constructed by Ecopath with Ecosim software. The model was composed of 14 functional groups, including silver carp, big-head carp, Hemibarbus maculates, Cutler alburnus, Microlepis and other fishes, Oligochaeta, aquatic insect, zooplankton, phytoplankton, and organic detritus, etc. , being able to better simulate Fenshuijiang Reservoir ecosystem. In this ecosystem, there were five trophic levels (TLs) , and the nutrient flow mainly occurred in the first three TLs. Grazing and detritus food chains were the main energy flows in the ecosystem, but the food web was simpler and susceptible to be disturbed by outer environment. The transfer efficiency at lower TLs was relatively low, indicating that the ecosystem had a lower capability in energy utilization, and the excessive stock of nutrients in the ecosystem could lead to eutrophication. The lower connectance index, system omnivory index, Finn' s cycled index, and Finn' s mean path length demonstrated that the ecosystem was unstable, while the high ecosystem property indices such as Pp/R and Pp/B showed that the ecosystem was immature and highly productive. It was suggested that Fenshuijiang Reservoir was still a developing new reservoir ecosystem, with a very short history and comparatively high primary productivity.关键词
分水江水库/Ecopath模型/生态系统特征/营养级Key words
Fenshuijiang Reservoir/ Ecopath model/ ecosystem characteristics/ trophic level分类
生物科学引用本文复制引用
武震,贾佩峤,胡忠军,陈立侨,顾志敏,刘其根..基于Ecopath模型分析分水江水库生态系统结构和功能[J].应用生态学报,2012,23(3):812-818,7.基金项目
浙江省重大科技专项农业项目(2008C12009)资助. （2008C12009）
