Trends, periodicities and discontinuities of precipitation in the Huangfuchuan Watershed, Loess Plateau, China

doi:10.18520/cs/v111/i4/727-733

	Trends, periodicities and discontinuities of precipitation in the Huangfuchuan Watershed, Loess Plateau, China
	He, Yi 1; Mu, Xingmin 1,2,3; Gao, Peng 2,3; Zhao, Guangju 2,3; Wang, Fei 2,3; Sun, Wenyi 2,3; Li, Pengfei 3; Song, Jinxi 3
刊名	CURRENT SCIENCE
	2016-08-25
卷号	111 期号:4 页码:727-733
关键词	Ensemble empirical mode decomposition periodicities and discontinuities precipitation variability watershed
ISSN号	0011-3891
DOI	10.18520/cs/v111/i4/727-733
通讯作者	Gao, Peng(gaopeng@ms.iswc.ac.cn)
英文摘要	Longitudinal analyses of hydro-meteorological variables are extremely important for climate studies and water resources planning. Precipitation across the most severely eroded areas of Huangfuchuan Watershed in the Loess Plateau, China was analysed using data from 10 rainfall stations during the period 1954-2010. The ensemble empirical mode decomposition (EEMD), Hurst exponent, and Mann-Kendall methods were utilized to detect periodicities, discontinuities as well as long-term persistence of precipitation. The results show abrupt changes (i.e. discontinuities) in spring during the period 1963-1969 and in 1975, the summer period of 1962 and 1986-1994, the autumn of 1978, and the winter of 1964. These abrupt changes were determined to be statistically significant at the P = 0.05 level. There were inter-annual periods of quasi-3- and quasi-6-year for annual and the four seasons, and decadal periods of quasi-10-, quasi-15-, quasi-25- and quasi-50-year for different seasons. However, periodical features in inter-annual periods were not statistically noticeable. Moreover, Hurst exponent analysis indicated that the current trends of precipitation over the four seasons would continue in the future. The results also indicate that the EEMD method is able to effectively reveal deviations in long-term precipitation series at various timescales and could be utilized for complex analysis of non-stationary and nonlinear signal change. These findings could provide important information for ecological restoration and farming operations across the study region.
资助项目	Nonprofit Industry Financial Program of MWR, China[201501049] ; West Light Foundation and Youth Innovation Promotion Association, Chinese Academy of Sciences[2011289] ; Hundred Talents Project of the Chinese Academy of Sciences[A315021406] ; Program for Key Science and Technology Innovation Team in Shaanxi Province[2014KCT-27] ; Natural Science Foundation of Shaanxi Province[2015JQ4112] ; Key Research Program of the Chinese Academy of Sciences[KZZD-EW-04]
WOS关键词	EMPIRICAL MODE DECOMPOSITION ; RIVER-BASIN ; SUMMER PRECIPITATION ; TEMPORAL VARIABILITY ; MAXIMUM ; CLIMATE ; IDENTIFICATION ; TEMPERATURE ; XINJIANG
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	INDIAN ACAD SCIENCES
WOS记录号	WOS:000382136300040
资助机构	Nonprofit Industry Financial Program of MWR, China ; West Light Foundation and Youth Innovation Promotion Association, Chinese Academy of Sciences ; Hundred Talents Project of the Chinese Academy of Sciences ; Program for Key Science and Technology Innovation Team in Shaanxi Province ; Natural Science Foundation of Shaanxi Province ; Key Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/66163]
专题	中国科学院地理科学与资源研究所
通讯作者	Gao, Peng
作者单位	1.Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	He, Yi,Mu, Xingmin,Gao, Peng,et al. Trends, periodicities and discontinuities of precipitation in the Huangfuchuan Watershed, Loess Plateau, China[J]. CURRENT SCIENCE,2016,111(4):727-733.
APA	He, Yi.,Mu, Xingmin.,Gao, Peng.,Zhao, Guangju.,Wang, Fei.,...&Song, Jinxi.(2016).Trends, periodicities and discontinuities of precipitation in the Huangfuchuan Watershed, Loess Plateau, China.CURRENT SCIENCE,111(4),727-733.
MLA	He, Yi,et al."Trends, periodicities and discontinuities of precipitation in the Huangfuchuan Watershed, Loess Plateau, China".CURRENT SCIENCE 111.4(2016):727-733.