气候变化领域集成服务门户(CCPortal): Long-term hydro-climatic trends in the mountainous Kofarnihon river Basin in Central Asia

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DOI	10.3390/W12082140
	Long-term hydro-climatic trends in the mountainous Kofarnihon river Basin in Central Asia
	Gulakhmadov A.; Chen X.; Gulahmadov N.; Liu T.; Davlyatov R.; Sharofiddinov S.; Gulakhmadov M.
发表日期	2020
ISSN	20724292
卷号	12 期号:8
英文摘要	Hydro-climatic variables play an essential role in assessing the long-term changes in streamflow in the snow-fed and glacier-fed rivers that are extremely vulnerable to climatic variations in the alpine mountainous regions. The trend and magnitudinal changes of hydro-climatic variables, such as temperature, precipitation, and streamflow, were determined by applying the non-parametric Mann-Kendall, modified Mann-Kendall, and Sen's slope tests in the Kofarnihon River Basin in Central Asia. We also used Pettitt's test to analyze the changes during the 1951-2012 and 1979-2012 time periods. This study revealed that the variations of climate variables have their significant spatial patterns and are strongly regulated by the altitude. From mountainous regions down to plain regions, the decadal temperature trends varied from-0.18 to 0.36 °C/decade and the variation of precipitation from-4.76 to-14.63mmyr-1 per decade. Considering the temporal variation, the temperature trends decreased in winter and significantly increased in spring, and the precipitation trends significantly decreased in spring but significantly increased in winter in the high-altitude areas. As consequence, total streamflow in headwater regions shows the obvious increase and clear seasonal variations. The mean monthly streamflow decreased in fall and winter and significantly increased in the spring and summer seasons which can be attributed to the influence of global warming on the rapid melting of snow and ice. Although the abrupt change points in air temperature and precipitation occurred around the 1970s and 1990s in the low-altitude areas and 2000s in the high-altitude areas during the 1951-2012 and 1979-2012 periods, the general trends of hydro-climatic variables keep consistent. This study benefits water resource management, socio-economic development, and sustainable agricultural planning in Tajikistan and its downstream countries. © 2020 by the authors.
英文关键词	Climate change; Kofarnihon river basin; Precipitation; Streamflow; Temperature; Trends
语种	英语
scopus关键词	Water (Switzerland)
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158418
作者单位	Research Center of Ecology and Environment in Central Asia, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; Ministry of Energy and Water Resources of the Republic of Tajikistan, Dushanbe, 734064, Tajikistan; Institute ofWater Problems, Hydropower and Ecology of the Academy of Sciences of the Republic of Tajikistan, Dushanbe, 734042, Tajikistan; University of Chinese Academy of Sciences, Beijing, 100049, China; Committee for Environmental Protection under the Government of the Republic of Tajikistan, Dushanbe, 734034, Tajikistan
推荐引用方式 GB/T 7714	Gulakhmadov A.,Chen X.,Gulahmadov N.,et al. Long-term hydro-climatic trends in the mountainous Kofarnihon river Basin in Central Asia[J],2020,12(8).
APA	Gulakhmadov A..,Chen X..,Gulahmadov N..,Liu T..,Davlyatov R..,...&Gulakhmadov M..(2020).Long-term hydro-climatic trends in the mountainous Kofarnihon river Basin in Central Asia.,12(8).
MLA	Gulakhmadov A.,et al."Long-term hydro-climatic trends in the mountainous Kofarnihon river Basin in Central Asia".12.8(2020).