The Spatiotemporal Change of Glacier Runoff Is Comparably Attributed to Climatic Factors and Physical Properties in Northwestern China
文献类型：期刊论文
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| 作者 | Leng, Xuejing ; Feng, Xiaoming; Fu, Bojie; Zhang, Yu
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| 刊名 | REMOTE SENSING
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| 出版日期 | 2022-05 |
| 卷号 | 14期号:10页码:2393 |
| 关键词 | LOCALLY WEIGHTED REGRESSION TARIM RIVER-BASIN SUSTAINABLE DEVELOPMENT HYDROLOGICAL RESPONSE WATER AVAILABILITY INVENTORY DATA MASS BALANCES INDUS BASIN IMPACTS PRECIPITATION |
| 英文摘要 | The spatiotemporal regimes of glacier runoff (GR) under a warming climate are of great concern, especially in dryland areas in northwestern China (DAC). Due to the difficulty of observing GR, little attention has been given to the spatiotemporal change in GR at regional scales. This study uses the regional individual glacier mass balance (GMB) dataset developed by digital elevation models (DEMs) to simulate the spatiotemporal regime of GR using atmospheric parameters considering both ablation and accumulation processes on glaciers. In this study, GR, including glacier meltwater runoff (MR) and delayed water runoff (DR) of the DAC, was quantitatively assessed at a catchment scale from 1961 to 2015. The total annual GR in the DAC was (100.81 +/- 68.71) x 10(8) m(3) in 1961-2015, where MR accounted for 68%. Most basins had continuously increasing tendencies of different magnitudes from 1961 to 2015. The least absolute shrinkage and selection operator (LASSO) and random forest techniques were used to explore the contributions of climate factors and glacier physical properties to GR, and the results indicated that climate factors could explain 56.64% of the variation. In comparison, the remaining 43.36% could be explained by the physical properties of glaciers themselves (i.e., degree-day factor on ice, degree-day factor on snow, glacier median height, aspect, and slope). This study not only improves our understanding of the spatiotemporal change in GR in the drylands of northwestern China at spatial and temporal resolutions but also highlights the role of physical properties in explaining the heterogeneous dynamics among GRs unlike previous studies that only emphasize rising temperatures. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47359]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 通讯作者 | Feng, Xiaoming |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Leng, Xuejing,Feng, Xiaoming,Fu, Bojie,et al. The Spatiotemporal Change of Glacier Runoff Is Comparably Attributed to Climatic Factors and Physical Properties in Northwestern China, The Spatiotemporal Change of Glacier Runoff Is Comparably Attributed to Climatic Factors and Physical Properties in Northwestern China.pdf[J]. REMOTE SENSING,2022,14(10):2393. |
| APA | Leng, Xuejing,Feng, Xiaoming,Fu, Bojie,&Zhang, Yu.(2022).The Spatiotemporal Change of Glacier Runoff Is Comparably Attributed to Climatic Factors and Physical Properties in Northwestern China.REMOTE SENSING,14(10),2393. |
| MLA | Leng, Xuejing,et al."The Spatiotemporal Change of Glacier Runoff Is Comparably Attributed to Climatic Factors and Physical Properties in Northwestern China".REMOTE SENSING 14.10(2022):2393. |
入库方式： OAI收割
来源：生态环境研究中心
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