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题名: Response of hydrological processes to land-cover and climate changes in Kejie watershed, south-west China
作者: Ma, Xing2, 3; null(许建初)1; Luo, Yi4; Aggarwal, Shiv Prasad5; Li, Jiatong6
刊名: HYDROLOGICAL PROCESSES
关键词: land-cover change ; climate change ; SWAT ; hydrological processes ; watershed
英文摘要: Land-cover/climate changes and their impacts on hydrological processes are of widespread concern and a great challenge to researchers and policy makers. Kejie Watershed in the Salween River Basin in Yunnan, South-West China, has been reforested extensively during the past two decades. In terms of climate change, there has been a marked increase ill temperature. The impact of these changes oil hydrological processes required investigation: hence, this paper assesses aspects of changes in land cover and climate. The response of hydrological processes to land-cover/climate changes was examined using the Soil and Water Assessment Tool (SWAT) and impacts of single factor, land-use/climate change on hydrological processes were differentiated. Land-cover maps revealed extensive reforestation at the expense of grassland, cropland, and barren land. A significant monotonic trend and noticeable changes had Occurred in annual temperature over the long term. Long-term changes in annual rainfall and streamflow were weak; and changes in monthly rainfall (May, June, July, and September) were apparent. Hydrological simulations showed that the impact of climate change oil Surface water, baseflow, and streamflow was offset by the impact of land-cover change. Seasonal variation in streamflow was influenced by seasonal variation in rainfall. The earlier onset of monsoon and the variability of rainfall resulted in extreme monthly streamflow. Land-cover change played a dominant role in mean annual Values; seasonal variation in surface water and streamflow was influenced mainly by seasonal variation in rainfall; and land-cover change played a regulating role in this. Surface water is more sensitive to land-cover change and climate change: an increase in surface water in September and May due to increased rainfall was offset by a decrease in surface water due to land-cover change. A decrease in baseflow caused by changes in rainfall and temperature was offset by all increase in baseflow due to land-cover change. Copyright (C) 2009 John Wiley & Sons, Lid.
出版日期: 2009-04-15
卷号: 23, 期号:8, 页码:1179-1191
DOI标识: 10.1002/hyp.7233
语种: 英语
收录类别: SCI
学科分类: Water Resources
ISSN号: 0885-6087
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/2331
Appears in Collections:资源植物与生物技术所级重点实验室_期刊论文

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作者单位: 1.World Agroforestry Ctr China Program, Kunming 650204, Peoples R China
2.CAS, Kunming Inst Bot, Kunming 650204, Peoples R China
3.Yunnan Inst Environm Sci, Kunming 650034, Peoples R China
4.Chinese Acad Sci, Inst Geog Sci & Nat Resource Res, Beijing 100101, Peoples R China
5.NRSA, Indian Inst Remote Sensing, Dehra Dun 248001, Uttar Pradesh, India
6.Baoshan Hydrol Bur, Baoshan 678000, Peoples R China

Recommended Citation:
Ma, X; Xu, JC; Luo, Y; Aggarwal, SP; Li, JT.Response of hydrological processes to land-cover and climate changes in Kejie watershed, south-west China,HYDROLOGICAL PROCESSES,2009,23(8):1179-1191
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