Spatiotemporal Changes in Water Yield Function and Its Influencing Factors in the Tibetan Plateau in the Past 20 Years

Lv, Lingfeng; Han, Longbin; Xu, Wen; Shao, Hongbo; Liu, Shuhan

doi:10.3390/atmos14060925

Cited by 3 publications

(1 citation statement)

References 39 publications

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“…The existing studies do not consider LUCC and vegetation species changes that influence the hydrological cycle processes in watersheds. It is also difficult to accurately strip out the effects of LUCC and vegetation-species changes on hydrological cycle processes, especially the effects of LUCC, in practical applications [47]. In previous studies, most of the drivers of hydrological change were divided into two major factors: climate change and human activities, and first-order approximations were used, such as, LUCC was approximated as a result of human activities [48].…”

Section: Uncertainty Analysismentioning

confidence: 99%

Combined Effects of Land Use/Cover Change and Climate Change on Runoff in the Jinghe River Basin, China

Liu,

Guan,

Huang

et al. 2023

Atmosphere

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In the context of global warming and intensified human activities, the quantitative assessment of the combined effects of land use/cover change (LUCC) and climate change on the hydrological cycle is crucial. This study was based on the simulation results of future climate and LUCC in the Jinghe River Basin (JRB) using the GFDL–ESM2M and CA–Markov combined with the SWAT models to simulate the runoff changes under different scenarios. The results revealed that the future annual precipitation and average temperature in the JRB are on the increase, and the future LUCC changes are mainly reflected in the increase in forest and urban lands and decrease in farmlands. Changes in runoff in the JRB are dominated by precipitation, and the frequency of extreme events increases with the increase in the concentration of CO2 emissions. Under four climate scenarios, the contribution of future climate change to runoff changes in the JRB is −8.06%, −27.30%, −8.12%, and +1.10%, respectively, whereas the influence of future LUCC changes is smaller, ranging from 1.14–1.64%. In response to the future risk of increasing water-resources stress in the JRB, the results of this study can provide a scientific basis for ecological protection and water-resources management and development.

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Section: Uncertainty Analysismentioning

confidence: 99%

Combined Effects of Land Use/Cover Change and Climate Change on Runoff in the Jinghe River Basin, China

Liu,

Guan,

Huang

et al. 2023

Atmosphere

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The impact of future climate and land use changes on runoff in the Min-Tuo River Basin

Jiang,

Ni,

Deng

et al. 2024

Journal of Water and Climate Change

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In the face of escalating global warming and intensified human activities, it is crucial to quantitatively assess the combined impacts of future climate change (CC) and land use change (LUCC) on runoff. This study employed simulation results of future CC and LUCC in the Min-Tuo River Basin, utilizing the CMIP6 and cellular automata (CA)-Markov models in conjunction with the SWAT model to project runoff changes under various scenarios. The findings indicate an anticipated increase in both precipitation and average temperature in the future. Projected LUCC involves a reduction in arable land and grassland, alongside expansion of other land cover types. Changes in basin runoff are predominantly influenced by precipitation, with a higher likelihood of extreme events as CO2 emissions increase. Across four emission scenarios, the impact of future CC on basin runoff varies from −5.21 to +6.09%, while future LUCC's contribution ranges from +0.05 to +0.07%. When both factors are considered, the overall trend indicates a decrease in future runoff changes, ranging from −0.27 to +0.17%. These findings underscore the greater influence of CC on runoff compared with LUCC, thereby providing a scientific foundation for ecological conservation and water resources management in the basin.

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A Novel Framework for Integrally Evaluating the Impacts of Climate Change and Human Activities on Water Yield Services from Both Local and Global Perspectives

Ouyang,

Huang,

Gong

et al. 2024

Remote Sensing

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With global climate change and irrational human activities, regional water resource conflicts are becoming more and more pronounced. The availability of water resource in watersheds can be indicated by the water yield. Exploring the factors that influence the water yield is crucial in responding to climate change and protecting water resource. Previous research on the factors influencing the water yield has frequently adopted a macro-level perspective, which has failed to reflect the influencing mechanisms of changes at the local scale adequately. Therefore, this study proposes a novel framework for integrally evaluating the impacts of climate change and human activities on water yield services from both local and global perspectives. Taking Ganzhou City, the source of the Ganjiang River, as an example, the results show the following: (1) Ganzhou City had the largest water yield of 1307.29 mm in 2016, and the lowest was only 375.32 mm in 2011. The spatial distribution pattern was mainly affected by the surface environment, and the high-value water yield regions in the study area were predominantly located in urban areas with flat terrain. (2) At the local scale, regions where human activities contribute more than 80% accounted for 25% of the area. In comparison, the impact of climate change accounted for 0.95%. The contribution rate of human activities to the water yield in Ganzhou City was significantly greater than that of climate change. (3) At the global scale, the simulation results of four scenarios show that climate change contributed (>98%) to the water yield, which is significantly higher than human activities (<2%). This study puts forward pioneering views on the research of water yield driving forces and provides a valuable theoretical basis for water resource protection and ecological environment construction.

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Spatiotemporal Changes in Water Yield Function and Its Influencing Factors in the Tibetan Plateau in the Past 20 Years

Cited by 3 publications

References 39 publications

Combined Effects of Land Use/Cover Change and Climate Change on Runoff in the Jinghe River Basin, China

Combined Effects of Land Use/Cover Change and Climate Change on Runoff in the Jinghe River Basin, China

The impact of future climate and land use changes on runoff in the Min-Tuo River Basin

A Novel Framework for Integrally Evaluating the Impacts of Climate Change and Human Activities on Water Yield Services from Both Local and Global Perspectives

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