干旱区生态环境知识资源中心(Arid): Quantifying the impact of mountain precipitation on runoff in Hotan River, northwestern China

Arid

	Quantifying the impact of mountain precipitation on runoff in Hotan River, northwestern China
	Li Baofu; Zheng Jili; Shi Xun; Chen Yaning
来源期刊	地球科学前沿
ISSN	2095-0195
出版年	2020
卷号	14 期号:3
英文摘要	It is of great significance to quantitatively assess the impact of mountain precipitation on inland river runoff in data scarce regions.Based on the corrected TRMM precipitation and runoff data, a variety of statistical methods were used to identify which areas of precipitation have an important impact on runoff in the Hotan River Basin, and to evaluate the effects that precipitation changes have on runoff at low, mid, high, and extremely high altitudes of mountainous areas.The results showed that: 1) From 1998 to 2015, the annual runoff showed a fluctuating upward trend with a rate of 11.2110~8 m~3/10 a (P<0.05).Runoff in every season also had an increasing trend, with summer runoff the most significant at a rate of 6.0910~8 m~3/10 a.2) The annual runoff and precipitation changes had certain synchronization, with a correlation coefficient of 0.45 (P<0.05).Among them, the correlations between precipitation and runoff changes were highest at low and mid- altitudes, with coefficients of 0.62 and 0.55, respectively (P<0.05).3) 65.95% of the regional precipitation at low altitudes and 48.34% at high altitudes were significantly correlated with runoff (P<0.05), while only 38.84% and 26.58% of regional precipitation levels at mid- and extremely high altitudes were significantly correlated with runoff.4) The annual precipitation change in the basin was 1%, which would cause the annual runoff to change by 0.24%.In 1998- 2015, the change of annual runoff caused by precipitation change at high altitudes was largest at a rate of - 6.01%;the change rates of annual runoff caused by precipitation change in the low, mid-, and extremely high altitudes were - 3.66%, - 3.62%, and - 3.67%, respectively.The results have significant scientific guidance for water resource management in arid basins.
英文关键词	precipitation mountainous areas runoff TRMM arid region of northwestern China
类型	Article
语种	英语
收录类别	CSCD
WOS类目	Science & Technology - Other Topics
CSCD记录号	CSCD:6880249
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353396
推荐引用方式 GB/T 7714	Li Baofu,Zheng Jili,Shi Xun,et al. Quantifying the impact of mountain precipitation on runoff in Hotan River, northwestern China[J],2020,14(3).
APA	Li Baofu,Zheng Jili,Shi Xun,&Chen Yaning.(2020).Quantifying the impact of mountain precipitation on runoff in Hotan River, northwestern China.地球科学前沿,14(3).
MLA	Li Baofu,et al."Quantifying the impact of mountain precipitation on runoff in Hotan River, northwestern China".地球科学前沿 14.3(2020).