Quantifying the major drivers for the expanding lakes in the interior Tibetan Plateau
Quantifying the major drivers for the expanding lakes in the interior Tibetan Plateau
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量化青藏高原内陆湖泊扩张的主要驱动因素
DOI：
10.1016/j.scib.2021.11.010
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发表时间：
--
期刊：
影响因子：
18.9
通讯作者：
Yongkang Xue
中科院分区：
文献类型：
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作者：
Jing Zhou;Lei Wang;Xiaoyang Zhong;T;ong Yao;Jia Qi;Yuanwei Wang;Yongkang Xue
湖泊是陆地水圈的重要组成部分，对区域水文循环具有重要影响[1]。由于青藏高原独特的地理位置和气候特征，该地区湖泊的水位、表面积和蓄水量对气候变化极为敏感[2-4]。湖泊快速扩张已成为TP最重要的环境变化之一[5]，因此需要对湖泊动态进行持续监测[4]。测量技术的最新进展（例如，卫星观测）[4，6，7]和一系列上级湖泊体积估算方法的发展（例如，参考文献1）。[8])已经提高了我们的能力，了解湖泊动态的TP的时空变化，越来越准确，并在一个更好的分辨率。然而，大多数这些研究没有评估气象和水文在湖泊流域尺度的综合影响。由于内陆湖泊通常被认为是气候和水文条件的全流域整合者[9]，因此调查TP湖泊流域的水文过程对于了解湖泊动态对当前气候变化的响应至关重要。近几十年来，气候变暖导致的冰川退缩、融雪和冻土融化导致了复杂的水文状况[10]。在过去的四十年里，在TP的几个大型河流流域，积雪和冰川融水（SGM）对年径流量的综合贡献超过了50%[11]。目前对湖泊如何应对气候变化的了解仍然有限，因为水圈和冰冻圈内发生的水文过程是紧密耦合的。以前使用多源数据和定量评估的研究表明，降水是
Lakes are an important component of the terrestrial hydrosphere, and have a strong influence on the regional hydrological cycle [1]. Due to the distinctive geographic location and climatic characteristics of the Tibetan Plateau (TP), the water level, surface area, and water storage of lakes across this region are extremely sensitive to climate change [2–4]. Rapid lake expansion has become one of the most significant environmental changes across the TP [5], motivating the need for continuous monitoring of lake dynamics [4].Recent advances in measurement technology (eg, satellite observations)[4, 6, 7] and the development of a range of superior lake volume estimation methods (eg, Ref.[8]) have improved our ability to understand spatiotemporal changes of lake dynamics in the TP with increasing accuracy and at a finer resolution. However, the majority of these studies have not assessed the combined effects of meteorology and hydrology at the lake-basin scale. As inland lakes are often considered to be basin-wide integrators of climatic and hydrological conditions [9], investigating hydrological processes in the TP lake basins is critical for understanding the response of lake dynamics to current climate change. In recent decades, glacial retreat, snowmelt, and frozen soil thawing caused by climate warming have resulted in complex hydrological regimes [10]. The combined contributions of snow cover and glacier meltwater (SGM) to annual streamflow have exceeded 50% in several large river basins of the TP during the last four decades [11]. Current understanding of how the lakes respond to climate change remains limited, since the hydrological processes occurring within the hydrosphere and cryosphere are tightly coupled. Previous studies using multi-source data and quantitative evaluations suggest that precipitation is the primary driver of