Simulating the effects of regulation measures on ecosystem state changes in a shallow lake

被引:7
|
作者
Xu, Cui [1 ]
Yin, Xin'an [1 ]
Xu, Zhihao [1 ]
Liu, Hongrui [1 ]
Yang, Ying [1 ]
Yang, Zhifeng [1 ]
机构
[1] Beijing Normal Univ, State Key Lab Water Environm Simulat, Sch Environm, 19 Xinjiekouwai St, Beijing 100875, Peoples R China
基金
美国国家科学基金会; 中国国家自然科学基金;
关键词
Shallow lake; Ecosystem state change; Simulation model; Regulation strategy; OF-THE-ART; CLEAR-WATER; REGIME SHIFTS; LONG-TERM; PHRAGMITES-AUSTRALIS; SENSITIVITY-ANALYSIS; MACROPHYTES; THRESHOLDS; RESILIENCE; DYNAMICS;
D O I
10.1016/j.ecolind.2017.05.002
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
Ecosystem state changes are actively engaged in the theory and practice of shallow lake restoration and management. Previous research focus on the occurrence and driving mechanisms of abrupt state shifts (regime shifts). However, the regulation effects of potential measures on the process of ecosystem state changes remain relatively unknown. The study employed a mechanism-driven, mathematical model to simulate the dynamics of ecosystem state changes in a shallow lake. Parameters for building regulatory scenarios were selected from the parameter sensitivity analysis outcomes. The convenience of use of the measures in real lake management was taken into consideration. Finally, regulation effects on the process of ecosystem state changes have been analyzed with scenarios. Lake Baiyangdian in north China plain was taken as a case study for this research. Results demonstrated that the process of ecosystem state changes could be regulated by reducing total phosphorous concentration in incoming water (inflows). The ecosystem will have better performance toward the clear state when reducing total phosphorous concentration in inflows below 0.23 g m(-3). The ecosystem will experience periodical oscillation of states within a narrow range of vegetation coverage once total phosphorus concentration in inflows is reduced to 0.18 g m(-3).
引用
收藏
页码:72 / 81
页数:10
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