Modeling the effects of ecological engineering on ecosystem health of a   shallow eutrophic Chinese lake (Lake Chao)

doi:10.1016/S0304-3800(99)00005-8

CORC > 北京大学 > 城市与环境学院

	Modeling the effects of ecological engineering on ecosystem health of a shallow eutrophic Chinese lake (Lake Chao)
	Xu, FL ; Jorgensen, SE ; Tao, S ; Li, BG
刊名	ecological modelling
	1999
关键词	ecological model ecological engineering ecological system health Lake Chao STRUCTURAL DYNAMIC-MODEL EXERGY WATER ZOOPLANKTON PHYTOPLANKTON OPTIMIZATION RESERVOIRS CAPACITY
DOI	10.1016/S0304-3800(99)00005-8
英文摘要	Two ecological models that describe phosphorus-food web dynamics with and without macrophytes in Lake Chao ecosystems are developed in this paper. Ecosystem health indicators used in the two models include exergy (Ex), structural exergy (Ex(st)) the ratio of zooplankton to phytoplankton biomass (R-BZBA), and transparency in Secchi Disc depth (SD). The calculated values of important state variables and process rates from model 1 are compared with the measured data. Model 2 uses the same parameters and rate coefficients as model 1 for phytoplankton, zooplankton, fish, detritus, sediment, and soluble inorganic phosphorus submodels. The macrophyte submodel in model 2 is given realistic parameters taken from the literature. The lake ecosystem health indicators are calculated and compared by means of models 1 and 2. The changes of ecosystem health indicators and lake biological structure following macrophyte restoration are predicted using model 2. The results from model 1 show that there are good agreements between observed and simulated values of important variables and process rates. The results from model 2 reveal that macrophyte restoration in the Lake Chao ecosystem can decrease phytoplankton biomass, and increase Ex, Ex(st), SD, R-BZBA and fish biomass. With the increase of initial macrophyte biomass, phytoplankton biomass is declined, and Ex, Ex(st), SD, R-BZBA and fish biomass are increased. These findings mean that macrophyte restoration can regulate lake biological structure and improve lake ecosystem health. (C) 1999 Elsevier Science B.V. All rights reserved.; Ecology; SCI(E); 49; ARTICLE; 2-3; 239-260; 117
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/161186]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Xu, FL,Jorgensen, SE,Tao, S,et al. Modeling the effects of ecological engineering on ecosystem health of a shallow eutrophic Chinese lake (Lake Chao)[J]. ecological modelling,1999.
APA	Xu, FL,Jorgensen, SE,Tao, S,&Li, BG.(1999).Modeling the effects of ecological engineering on ecosystem health of a shallow eutrophic Chinese lake (Lake Chao).ecological modelling.
MLA	Xu, FL,et al."Modeling the effects of ecological engineering on ecosystem health of a shallow eutrophic Chinese lake (Lake Chao)".ecological modelling (1999).