气候变化领域集成服务门户(CCPortal): Precipitation exacerbates spatial heterogeneity in the propagation time of meteorological drought to soil drought with increasing soil depth

CCPortal

DOI	10.1088/1748-9326/ad4975
	Precipitation exacerbates spatial heterogeneity in the propagation time of meteorological drought to soil drought with increasing soil depth
	Hu, Chen; Xia, Jun; She, Dunxian; Wang, Gangsheng; Zhang, Liping; Jing, Zhaoxia; Hong, Si; Song, Zhihong
发表日期	2024
ISSN	1748-9326
起始页码	19
结束页码	6
卷号	19 期号:6
英文摘要	The propagation of meteorological droughts to soil droughts poses a substantial threat to water resources, agricultural production, and social systems. Understanding drought propagation process is crucial for early warning and mitigation, but mechanisms of the propagation from meteorological drought to soil drought, particularly at varying soil depths, remain insufficiently understood. Here, we employ the maximum correlation coefficient method and the random forest (RF) model to investigate the spatiotemporal patterns and drivers of propagation time (PT) from meteorological drought to soil drought at four different depths across China from 1980 to 2018. Our findings reveal consistently higher PT in northern China and lower PT in southern China across varying soil depths, with more pronounced spatial heterogeneity with increasing soil depth. Furthermore, we identify temperature and precipitation as determinants of spatial patterns of PT in surface and deeper soil layers, respectively. Additionally, precipitation emerges as the dominant factor influencing changes in PT between different soil layers. Our study highlights a discernible shift in PT drivers from temperature to precipitation as soil depth increases and the significant impact of precipitation on exacerbating spatial heterogeneity in PT. This study contributes to an enhanced comprehension of the propagation process from meteorological drought to soil drought at different depths, which can aid in establishing practical drought mitigation measures and early warning systems.
英文关键词	drought propagation; meteorological drought; soil drought; soil depths; China
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001227512000001
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/296409
作者单位	Wuhan University; Wuhan University; Wuhan University; Chinese Academy of Sciences; Institute of Geographic Sciences & Natural Resources Research, CAS; Yangtze River Water Resources Protection Bureau; Yangtze River Water Resources Protection Bureau
推荐引用方式 GB/T 7714	Hu, Chen,Xia, Jun,She, Dunxian,et al. Precipitation exacerbates spatial heterogeneity in the propagation time of meteorological drought to soil drought with increasing soil depth[J],2024,19(6).
APA	Hu, Chen.,Xia, Jun.,She, Dunxian.,Wang, Gangsheng.,Zhang, Liping.,...&Song, Zhihong.(2024).Precipitation exacerbates spatial heterogeneity in the propagation time of meteorological drought to soil drought with increasing soil depth.ENVIRONMENTAL RESEARCH LETTERS,19(6).
MLA	Hu, Chen,et al."Precipitation exacerbates spatial heterogeneity in the propagation time of meteorological drought to soil drought with increasing soil depth".ENVIRONMENTAL RESEARCH LETTERS 19.6(2024).