Exploring sustainable solutions for the water environment in Chinese and Southeast Asian cities

Luo, Pingping; Mu, Yan; Wang, Shuangtao; Wei, Zhu; Mishra, Binaya Kumar; Huo, Aidi; Zhou, Meimei; Lyu, Jing; Hu, Maochuan; Duan, Weili; He, Bin; Nover, Daniel

doi:10.1007/s13280-021-01654-3

Cited by 51 publications

(32 citation statements)

References 111 publications

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“…Climate change and human activities have affected the hydrological conditions in many countries and regions, exacerbating water resource risks and deteriorating water quality [55,56]. As a process sensitive to climate change, lake variation in the Tibetan Plateau region is highly influenced by climate change.…”

Section: Mechanism Of Lake Variationmentioning

confidence: 99%

Quantifying the Contributions of Climate Change and Human Activities to Water Volume in Lake Qinghai, China

et al. 2021

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Lake Qinghai has shrunk and then expanded over the past few decades. Quantifying the contributions of climate change and human activities to lake variation is important for water resource management and adaptation to climate change. In this study, we calculated the water volume change of Lake Qinghai, analyzed the climate and land use changes in Lake Qinghai catchment, and distinguished the contributions of climate change and local human activities to water volume change. The results showed that lake water volume decreased by 9.48 km3 from 1975 to 2004 and increased by 15.18 km3 from 2005 to 2020. The climate in Lake Qinghai catchment is becoming warmer and more pluvial, and the changes in land use have been minimal. Based on the Soil and Water Assessment Tool (SWAT), land use change, climate change and interaction effect of them contributed to 7.46%, 93.13% and −0.59%, respectively, on the variation in surface runoff into the lake. From the perspective of the water balance, we calculated the proportion of each component flowing into and out of the lake and found that the contribution of climate change to lake water volume change was 97.55%, while the local human activities contribution was only 2.45%. Thus, climate change had the dominant impact on water volume change in Lake Qinghai.

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Section: Mechanism Of Lake Variationmentioning

confidence: 99%

Quantifying the Contributions of Climate Change and Human Activities to Water Volume in Lake Qinghai, China

et al. 2021

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“…However, the impacts such as natural hydrologic rhythm change have attracted a growing awareness due to these impoundments on instream environment (Yang et al 2019). Especially, the variation range of water flow is limited to a small range and the number of high-flow pulses decrease, which would artificially lead the natural environment tend to be monotonous (Luo et al 2021a, Cao et al 2022. Based on the previous research, the ecological flow is fundamental to sustaining the aquatic environment and affect the availability and function of river habitat (Naiman et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Balancing economic and ecological benefits for hydro-junction operation based on the ecological flow from the four major Chinese carps: a case study from Xinjiang River, China

Zhang

Zhang³

et al. 2023

Environ. Res. Commun.

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The construction and utilization of the hydro-junctions would change the water flow and affect the hydrologic process required for the survival and reproduction of the aquatic organism in the river basin. To investigate the influence of the construction of the Jiepai (JP) and Bazizui hydro-junction (BZZ) on the hydrologic process in the Xinjiang River and coordinate the benefits between power generation and downstream ecological protection of the four major Chinese carps (FMCC), a one-dimensional hydrodynamic model is established to simulate the river hydrological regime of the spawning site before and after the construction of BZZ. Meanwhile, eleven ecological hydrologic parameters are used to evaluate the degree of hydrological changes for the spawning site caused by JP and BZZ, and four hydrological methods are applied to calculate the minimal and optimal ecological flows to satisfy the demands of FMCC. The multi-objective operation model combined with the non-dominated sorting genetic algorithm Ⅱ(NSGA-Ⅱ) is established to evaluate the relationship among the objective functions and design the ecological operation scheme of BZZ. The results indicate that the hydrologic changes in the spawning site has been moderately changed since the construction of the JP and would change more after the construction of BZZ. An obvious antagonistic relationship between electricity generating and ecological changes are presented in the simulation results, and the multiobjective operation model could clearly increase the comprehensive benefits under three typical years (dry, average, and abundant) by 20%, 19%, and 34% with the corresponding electricity generating lost by 4.9%, 3.5%, and 4.1%, respectively. This study is expected to provide scientific guidance to coordinate the restrictions and conflicts between economic and ecological benefits of hydro-junction operation in the lower reaches of the Xinjiang River.

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“…To evaluate and identify the contribution of different driving factors to runoff changes, quantitative analysis methods are commonly used (Huang et al, 2019; Wang et al, 2023). Currently, there are two main research approaches for analysing the contribution of runoff changes: (1) directly using quantitative analysis methods to analyse the runoff evolution sequence (Huang et al, 2019; Luo et al, 2022). The long‐term historical runoff sequence is divided into natural periods and human activity impact periods based on the abrupt change time, and common methods include statistical analysis (Chen et al, 2017) and the elasticity coefficient (Zhan et al, 2014) method.…”

Section: Introductionmentioning

confidence: 99%

Attribution of runoff and hydrological drought changes in an ecologically vulnerable basin in semi‐arid regions of China

Li,

Wang,

Xue

et al. 2023

Hydrological Processes

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Climate change and human activities have been widely recognized as two major factors that deeply influence hydrological processes. Evaluating and identifying the contribution between different drivers contributes to better regional water management regulation. In this study, we used the variable infiltration capacity (VIC) model to quantify the contributions of different climatic variables and human activities to runoff in the Hunhe basin, which has a semiarid climate, in northern China. Through trend analysis, the study period is divided into the ‘baseline period’ (1982–1999) and the ‘change period’ (2000–2020). The results indicated that compared with climate change, human activities were the major factors decreasing runoff, contributing more than 86.3% to the runoff reduction in the change period. Climate change increased winter runoff but decreased summer and autumn runoff, resulting in an overall decrease in runoff. There is a trend of increasing severity of hydrological drought in the Hunhe basin, where climate change accounted for 28.2% of the total impact and human activities accounted for 72.8%. The change in runoff and hydrological drought was mainly due to human activities, including changing farmland to grassland and forest. These results would be helpful for policy‐makers and researchers to better understand the responses of runoff and hydrological drought to these changing environmental conditions and offering references for future water resource planning and management at the basin scale.

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Exploring sustainable solutions for the water environment in Chinese and Southeast Asian cities

Cited by 51 publications

References 111 publications

Quantifying the Contributions of Climate Change and Human Activities to Water Volume in Lake Qinghai, China

Quantifying the Contributions of Climate Change and Human Activities to Water Volume in Lake Qinghai, China

Balancing economic and ecological benefits for hydro-junction operation based on the ecological flow from the four major Chinese carps: a case study from Xinjiang River, China

Attribution of runoff and hydrological drought changes in an ecologically vulnerable basin in semi‐arid regions of China

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