An Interval Fuzzy, Double-Sided, Chance-Constrained Stochastic Programming Model for Planning the Ecological Service Value of Interconnected River Systems

Abstract

The western region of Jilin Province is an ecologically fragile area with scarce water resources. The effective allocation of the limited water resources in order to obtain a higher ecological service value is an urgent requirement. In this paper, an interval fuzzy, double-sided chance-constrained, stochastic programming (IFDCP) model was used based on the interconnected river system network project in the western Jilin Province. With the objective of maximizing the value of regional ecological services, the water diversion and supplement schemes were optimized and adjusted. The model results showed that the restored water surface area of all lakes and ponds in the western region of Jilin Province was higher than the initially planned scheme in the high flow year. The water surface area fulfilled the minimum constraints, but did not fulfill the initial scheme in the normal flow year. In the low flow year, the lower limit of some of the regions had to be decreased in order to meet the allocation of the limited water resources. The proportion of floodwater resource utilization gradually increased with an increase in the flood amount. The ecological service value produced in the normal and high flow years was found to be higher than the initial scheme. The marsh wetland can produce higher ecological service value. Therefore, the core of the model optimization was introducing more water to the marsh wetland after fulfilling the basic consumption of ponds and the reed wetland. In addition, the IFDCP model was more flexible in water diversion and supplement as compared to other models that had been developed previously.

Ecological Service Value Tradeoffs: An Ecological Water Replenishment Model for the Jilin Momoge National Nature Reserve, China

“…When the hydrological environment is damaged due to natural disturbance or anthropological factors, it leads to diminished biological habitats and reduced water sources, which challenge the survival of biological species and even impact the structure of different biological communities, thereby destroying biological diversity. This ultimately changes the structure of the wetland ecosystems and destroys their stability [ 9 , 10 ]. Therefore, it is imperative to focus on wetland restoration and maintenance of the wetland ecosystem functions.…”

Optimization of Ecological Water Replenishment Scheme Based on the Interval Fuzzy Two-Stage Stochastic Programming Method: Boluo Lake National Nature Reserve, Jilin Province, China

“…This is especially true for the hydrological environment, which is the most strongly affected due to natural disturbances or human factors; consequently, biological habitats and amounts of water resources are reduced, and the survival of biological species becomes challenging. Moreover, the structure of the biological community may be affected and biodiversity may be destroyed, leading to changes in the structure of wetland ecosystems and destruction of their stability [17,18]. Therefore, it is extremely important to allocate water resources to wetlands in a scientific and rational manner to secure their ecological functions and stability [19].…”

Optimization Model of the Ecological Water Replenishment Scheme for Boluo Lake National Nature Reserve Based on Interval Two-Stage Stochastic Programming

“…Xu et al [15] constructed a random water allocation optimization model based on the watershed scale to conduct the ecological supplement of wetlands in the Xiaoqing River Basin and to restore the wetland activities in this region. Yang et al [16] adopted an interval fuzzy double-sided chance-constrained stochastic programming method for designing the wetland ecological water replenishment project in the western region of the Jilin Province, which in addition to improving the ecological water supply, improved the local economic benefits as well. While the ecological water replenishment method is significantly effective in restoring the wetland ecosystem, the excessive allocation of ecological water replenishment may lead to water shortages in the reservoirs and rivers.…”