Application of a Fuzzy Two-Stage Chance Constrained Stochastic Programming Model for Optimization of the Ecological Services Value of the Interconnected River System Network Project in the Western Jilin Province, China

Abstract

Incremental ecological service value is an important assessment indicator for ecosystem restoration projects, such as the interconnected river system network project in western Jilin Province, China. In this paper, a fuzzy two-stage chance-constrained stochastic programming (FTSCCP) model is proposed for the optimization of regional incremental ecological service value through adjustments to the original water diversions and ecological water supplement schemes for ecosystem restoration under different management requirements and scenarios. The proposed method can effectively address uncertainties such as fuzzy parameters, probability distributions, and random variables in optimizing processes simultaneously. The results reveal that, under the requirement of meeting the original plan, a decrease in restoration scale would mainly appear under low-flow scenarios, and for the other scenarios, the original plan would be fully realized with an increase in flood utilization and a decrease in normal water supplementation. For the requirement of maximizing the incremental ecological service value, the adjustments would mainly be increases in water supplementation for reed wetlands and marsh wetlands and decreases in water surface area, including fish ponds and crab ponds. The ecological service values would be 11,256.79 million CNY (Chinese Yuan), 16,465.11 million CNY and 17,639.59 million CNY under low-, normal- and high-flow scenarios, respectively, with increases of 3.2%, 6.9% and 14.5% compared to the values based on the requirement of meeting the original plan. The results would be helpful for guiding regional ecosystem restoration and water resource management in the western Jilin Province.

Interval-Parameter Two-Stage Stochastic Programming (IPTSP) Model of Ecological Water Replenishment Scheme in the National Nature Reserve for Improved Suitable Habitat for Rare and Endangered Migrant Birds

“…The project involved in the recommended scheme is an ecological water conservancy project primarily developed for the restoration and protection of wetlands. The project pays attention to not only the socio-economic and environmental benefits, but also the ecological benefits [56]. Therefore, based on the evaluation index system built by Cai et al, [56] and the classification system of MA, an evaluation index system of the ecosystem service of the MNNR, which comprehensively considered the socio-economic, environmental, and ecological benefits, was appropriately revised [57,58].…”

“…The project pays attention to not only the socio-economic and environmental benefits, but also the ecological benefits [56]. Therefore, based on the evaluation index system built by Cai et al, [56] and the classification system of MA, an evaluation index system of the ecosystem service of the MNNR, which comprehensively considered the socio-economic, environmental, and ecological benefits, was appropriately revised [57,58]. The revised index system includes four first-level indicators such as supply service, 14 s-level indicators such as food production, and 19 third-level indicators such as oxygen release.…”

An Interval Two-Stage Stochastic Programming Model for Flood Resources Allocation under Ecological Benefits as a Constraint Combined with Ecological Compensation Concept

“…The third category is the service functions for the humanities, including the value of scientific research, tourism resources, and landscape functions. Ecosystem service functions include not only the ability of ecosystems to directly supply products or raw materials for human production and consumption but also the ability of ecological environment elements to improve the quality of life, while maintaining the environmental conditions and effects that human beings depend on for survival [30]. Therefore, it is important to establish an ecosystem service function evaluation indicator system that is suitable for this study.…”

Optimization of Ecological Water Supplement Scheme for Improved Suitable Habitat Area for Rare Migratory Birds in Nature Reserves Using Interval-Parameter Fuzzy Two-Stage Stochastic Programming Model

“…In the present study, the parameters used to determine the solution of the IPFTSP model were consistent with those used to determine the solution of the IPTSP model in a previous study [ 10 ]. Data on the parameters used in the present study were obtained mainly from the literature [ 33 ], whose data were project data obtained from the West Water Supply Project of Jilin Province.…”