Advances in Earth Science ›› 2019, Vol. 34 ›› Issue (8): 801-813. doi: 10.11867/j.issn.1001-8166.2019.08.0801
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Zhenghui Xie 1, 2, 3( ),Si Chen 1, 2, 3,Peihua Qin 1, 2,Binghao Jia 1, 2,Jinbo Xie 1, 2
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Zhenghui Xie,Si Chen,Peihua Qin,Binghao Jia,Jinbo Xie. Research on Climate Feedback of Human Water Use and Its Impact on Terrestrial Water Cycles — Advances and Challenges[J]. Advances in Earth Science, 2019, 34(8): 801-813.
The terrestrial water cycle is the mutual transformation of surface and near-surface water, which controls the supply of fresh water resources. It is affected by human activities, solar radiation and gravity, as well as climate and environmental conditions. Inter-basin water transfer, irrigation, crop cultivation and harvesting, exploitation of groundwater water and other human activities lead to the change of spatial and temporal distribution of soil moisture, the underground water level, surface albedo, surface evaporation, as well as water and energy exchange between land surface and atmosphere. Human water use generates important feedback on the climate and changes the processes of the terrestrial water cycle significantly. The spatial and temporal distribution of precipitation in China is uneven. In addition, human activities further exacerbate the fragility of water resources and the contradiction between supply and demand, posing a serious challenge to the sustainable development of social economy. Therefore, understanding the laws and mechanisms of terrestrial water cycle change is very important for water resources utilization and human sustainable development. From the perspective of climate change and human activities, this paper summarized the impact of human activities on terrestrial water cycle and the progress of climate feedback research. It is urgent to consider the evolution of terrestrial water cycle and its climate under the dual impact of natural and human activities, and develop the large-scale land surface hydrological models and climate models with human water use, crop planting and irrigation, lateral groundwater flow. From the perspective of a fully coupled system, we need quantitatively to assess the climate feedback of human water use and its impact on the terrestrial water cycle process, and to explore its mechanism. We need to distinguish the contribution of human water activities and global climate change to the evolution of terrestrial water cycle in the context of climate change, and to propose water resources management strategies to address climate change.