气候变化领域集成服务门户(CCPortal): Attribution of growing season evapotranspiration variability considering snowmelt and vegetation changes in the arid alpine basins

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DOI	10.5194/hess-25-3455-2021
	Attribution of growing season evapotranspiration variability considering snowmelt and vegetation changes in the arid alpine basins
	Ning, Tingting; Li, Zhi; Feng, Qi; Li, Zongxing; Qin, Yanyan
发表日期	2021
ISSN	1027-5606
EISSN	1607-7938
起始页码	3455
结束页码	3469
卷号	25 期号:6
英文摘要	Previous studies have successfully applied variance decomposition frameworks based on the Budyko equations to determine the relative contribution of variability in precipitation, potential evapotranspiration (E-0), and total water storage changes (Delta S) to evapotranspiration variance (sigma(2)(ET)) on different timescales; however, the effects of snowmelt (Q(m)) and vegetation (M) changes have not been incorporated into this framework in snow-dependent basins. Taking the arid alpine basins in the Qilian Mountains in northwest China as the study area, we extended the Budyko framework to decompose the growing season sigma(2)(ET) into the temporal variance and covariance of rainfall (R), E-0, Delta S, Q(m), and M. The results indicate that the incorporation of Q(m) could improve the performance of the Budyko framework on a monthly scale; sigma(2)(ET) was primarily controlled by the R variance with a mean contribution of 63 %, followed by the coupled R and M (24.3 %) and then the coupled R and E-0 (14.1 %). The effects of M variance or Q(m) variance cannot be ignored because they contribute 4.3% and 1.8% of sigma(2)(ET), respectively. By contrast, the interaction of some coupled factors adversely affected sigma(2)(ET), and the out-of-phase seasonality between R and Q(m) had the largest effect (-7.6 %). Our methodology and these findings are helpful for quantitatively assessing and understanding hydrological responses to climate and vegetation changes in snow-dependent regions on a finer timescale.
WOS研究方向	Geology ; Water Resources
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS关键词	WATER-BALANCE ; CLIMATE-CHANGE ; RIVER-BASIN ; TEMPORAL VARIABILITY ; TERRESTRIAL STORAGE ; QILIAN MOUNTAINS ; LOESS PLATEAU ; HEIHE RIVER ; RUNOFF ; PRECIPITATION
WOS记录号	WOS:000664288300001
来源期刊	HYDROLOGY AND EARTH SYSTEM SCIENCES
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239436
作者单位	[Ning, Tingting; Feng, Qi; Li, Zongxing] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Peoples R China; [Ning, Tingting; Qin, Yanyan] Chinese Acad Sci, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou 730000, Peoples R China; [Ning, Tingting; Feng, Qi; Li, Zongxing] Qilian Mt Ecoenvironm Res Ctr Gansu Prov, Lanzhou 730000, Peoples R China; [Li, Zhi] Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Ning, Tingting,Li, Zhi,Feng, Qi,et al. Attribution of growing season evapotranspiration variability considering snowmelt and vegetation changes in the arid alpine basins[J]. 中国科学院西北生态环境资源研究院,2021,25(6).
APA	Ning, Tingting,Li, Zhi,Feng, Qi,Li, Zongxing,&Qin, Yanyan.(2021).Attribution of growing season evapotranspiration variability considering snowmelt and vegetation changes in the arid alpine basins.HYDROLOGY AND EARTH SYSTEM SCIENCES,25(6).
MLA	Ning, Tingting,et al."Attribution of growing season evapotranspiration variability considering snowmelt and vegetation changes in the arid alpine basins".HYDROLOGY AND EARTH SYSTEM SCIENCES 25.6(2021).