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

Abstract

In the present paper, an optimization model of the ecological water replenishment quantity of Boluo Lake wetland was constructed for ecological water replenishment in the Boluo Lake National Nature Reserve based on the interval two-stage stochastic programming (ITSP) method, which scientifically allocates the ecological water resources and enhances the utilization of flood resources in order to meet the minimum ecological water replenishment quantity requirement to meet the local economic and social water demand, to restore the wetland function of the reserve, and to improve the ecological environment. In addition, it considers the ecological service value of the reserve in order to achieve a shared increase in the ecological and economic benefits. The optimization model of the ecological water replenishment of Boluo Lake wetland considered the minimum ecological water replenishment as the objective function, while the water diversion capacity, water supply capacity, water diversion sequence, functional area, and ecological service value of the Lake bubble were utilized as constraints in order to restore the ecosystem function of the Boluo Lake National Nature Reserve. The results from the model revealed that the amount of ecological water replenishment was significantly reduced after optimization simulation, with the maximum reduction range in the ecological water replenishment being −100.00% and −74.58%. In addition, the total amount of flood diversion was significantly increased, and the flood resources could be fully utilized. Moreover, the recovery effect on the lake and pond functional areas was significant and compared much better to that prior to the ecological water replenishment, which was up to 2300.00% and 1987.59%. The ecological service value also increased significantly, and the rate of this increase was as high as 23.90% and 21.58%. In the present study, an optimization model was constructed for the ecological water replenishment of the Boluo Lake wetland supplement project based on the interval two-stage stochastic programming method, which would achieve the entire scope of ecological and economic benefits of the ecological water replenishment project by realizing the ecological system reconstruction and providing a feasible and reliable plan to the decision-makers.

Dryness–Wetness Encounter Probabilities’ Analysis for Lake Ecological Water Replenishment Considering Non-Stationarity Effects

“…We believe that this article provides a research approach for EWR via interbasin water transfer projects that can capture the non-stationarity of runoff series and speculate on possible scenarios during the project operation phase. Current studies about EWR focus on targets' water demand and give simple constraints for water diversion and supplementation amount in their water replenishment optimization model (Huang et al, 2021). If more attention was paid to analyzing the non-stationarity and the dryness-wetness encounter probability, the optimization model would be more reasonable.…”

“…Several wetland restoration measures, such as ecological water replenishment, restoring natural waterways, recreating the natural river, establishing habitats, and returning cropland to wetland, are recognized (Xin, 2014;Wu et al, 2020). Among these measures, the ecological water replenishment (EWR) has been widely applied in restoring ecology and hydrological conditions across various climatic and geophysical regions (Onuoha, 2008;Weigang et al, 2018), such as the Baiyangdian wetland (Ding et al, 2019), the Boluo Lake (Huang et al, 2021), and the Chagan Lake (Zhang et al, 2017). Understanding the hydrological synchronization of numerous water sources is critical for the EWR, as the EWR measures are heavily reliant on the hydrological conditions of water sources.…”

Concentration of Heavy Metals in Sediment and Water of Përlepnica Lake, Kosovo

“…38 The amount of available ecological water is a key factor that determines the function of the ecosystem. 39 Also, the monitoring of heavy metals is extremely important in an aquatic environment used by the population for drinking water. The concentrations of HMs in this lake with the analysed samples SP 1 -SP 6 were in accordance with EC 75/440: Mn 0.002-0.004 mg l −1 , Zn 0.051-0.091 mg l −1 , Cr 0.033-0.038 mg l −1 , Cd 0.002-0.004 mg l −1 , Pb < 1 ppb, and Ni < 1 ppb (Table 7).…”

Microeukaryotic plankton community dynamics under ecological water replenishment: Insights from eDNA metabarcoding

“…This approach is pivotal in addressing water scarcity, habitat degradation, and loss of biodiversity [ 1 , 2 ]. Given the aforementioned, EWR has surfaced as a critical scheme to bolster ecosystem restoration [ 3 , 4 ]. A variety of EWR projects, including the EWR of Yongding River, the South-to-North Water Diversion Project, the Tarim River ecological water replenishment restoration project, the Kissimmee River restoration project of natural hydrological conditions, and the Transaqua project to refill Lake Chad, have been executed in Asia, North America, and Africa [ 5 , 6 ].…”