干旱区生态环境知识资源中心(Arid): Have China's drylands become wetting in the past 50 years?

Arid

DOI	10.1007/s11442-022-2067-5
	Have China's drylands become wetting in the past 50 years?
	Zhang, Yu; Zhang, Yangjian; Cheng, Liang; Cong, Nan; Zheng, Zhoutao; Huang, Ke; Zhang, Jianshuang; Zhu, Yixuan; Gao, Jie; Sun, Yihan
通讯作者	Zhang, YJ
来源期刊	JOURNAL OF GEOGRAPHICAL SCIENCES
ISSN	1009-637X
EISSN	1861-9568
出版年	2023
卷号	33 期号:1 页码:99-120
英文摘要	Recently, whether drylands of Northwest China (NW) have become wetting has been attracting surging attentions. By comparing the Standard Precipitation Evapotranspiration Indices (SPEI) derived from two different potential evapotranspiration estimates, i.e., the Thornthwaite algorithm (SPEI_th) and the Penman-Monteith equation (SPEI_pm), we try to resolve the controversy. The analysis indicated that air temperature has been warming significantly at a rate of 0.4? decade(-1) in the last five decades and the more arid areas are more prone to becoming warmer. Annual precipitation of the entire study area increased insignificantly by 3.6 mm decade(-1) from 1970 to 2019 but NW presented significantly increasing trends. Further, the SPEI_th and SPEI_pm demonstrated similar wetting-drying-wetting trends (three phases) in China's drylands during 1970-2019. The common periodical signals in the middle phase were identified both by SPEI_th and SPEI_pm wavelet analysis. Analysis with different temporal intervals can lead to divergent or even opposite results. The attribution analysis revealed that precipitation is the main climatic factor driving the drought trend transition. This study hints that the wetting trend's direction and magnitude hinge on the targeted temporal periods and regions.
英文关键词	China drylands drying or wetting trend Standard Precipitation Evapotranspiration Index (SPEI) drought aridity
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000911974900006
WOS关键词	ASIAN SUMMER MONSOON ; POTENTIAL EVAPOTRANSPIRATION ; WAVELET COHERENCE ; CLIMATE-CHANGE ; DROUGHT ; PRECIPITATION ; TRENDS ; DRY ; CLASSIFICATION ; VARIABILITY
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397336
推荐引用方式 GB/T 7714	Zhang, Yu,Zhang, Yangjian,Cheng, Liang,et al. Have China's drylands become wetting in the past 50 years?[J],2023,33(1):99-120.
APA	Zhang, Yu.,Zhang, Yangjian.,Cheng, Liang.,Cong, Nan.,Zheng, Zhoutao.,...&Sun, Yihan.(2023).Have China's drylands become wetting in the past 50 years?.JOURNAL OF GEOGRAPHICAL SCIENCES,33(1),99-120.
MLA	Zhang, Yu,et al."Have China's drylands become wetting in the past 50 years?".JOURNAL OF GEOGRAPHICAL SCIENCES 33.1(2023):99-120.