气候变化领域集成服务门户(CCPortal): Seasonal Drought Dynamics and the Time-Lag Effect in the MU Us Sandy Land (China) Under the Lens of Climate Change

CCPortal

DOI	10.3390/land13030307
	Seasonal Drought Dynamics and the Time-Lag Effect in the MU Us Sandy Land (China) Under the Lens of Climate Change
	Wang, Fuqiang; Li, Ruiping; Wang, Sinan; Wang, Huan; Shi, Yanru; Zhang, Yin; Zhao, Jianwei; Yang, Jinming
发表日期	2024
EISSN	2073-445X
起始页码	13
结束页码	3
卷号	13 期号:3
英文摘要	Sand prevention and control are the main tasks of desertification control. The MU Us Sandy Land (MUSL), one of China's four main deserts, frequently experiences droughts and has a very fragile biological environment. Climate change is the main factor leading to drought, and it may result in more serious drought situations in the future. The Temperature Vegetation Dryness Index (TVDI) was established using land surface temperature and normalized difference vegetation index data. In this paper, we investigate spatial and temporal change characteristics, future change trends, and the time-lag effect of TVDI on climate factors at different scales in MUSL from 2001 to 2020 using Sen + Mann-Kendall trend analysis, Hurstexponent, partial correlation analysis, and lag analysis methods. The results show that (1) the overall drought shows a spatial characteristic of gradually alleviating from west to east (TVDI = 0.6). A significant drying trend dominated 38.5% of the pixels in the fall (Z = 1.99), and a highly significant drying trend dominated the rest of the three seasons (Z average = 2.95) and the whole year (Z = 3.47). (2) In the future, dry autumn, winter, and the whole year will be dominated by continuous drying, and spring and summer will mainly change from dry to wet. The main relationships between winter TVDI and temperature (-0.06) and precipitation (-0.07) were negative, while evapotranspiration (0.18) showed a positive correlation. The six land use types in spring, summer, fall, and the whole year were primarily non-significantly positively correlated with temperature and evapotranspiration. (3) At the seasonal scale, the sensitive factors in spring and autumn were opposite, with spring TVDI responding quickly to precipitation (0.3 months) and being less sensitive to temperature (1.8 months) and evapotranspiration (2 months). At the interannual scale, desert land TVDI was most sensitive to precipitation (2.6 months) and least responsive to temperature (3 months).
英文关键词	TVDI; climate factors; spatial and temporal characteristics; time-lag effect; seasonal drought; MU Us Sandy Land
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Studies
WOS记录号	WOS:001193025000001
来源期刊	LAND
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/290971
作者单位	Inner Mongolia Agricultural University; China Institute of Water Resources & Hydropower Research; Chinese Academy of Sciences; Xinjiang Institute of Ecology & Geography, CAS
推荐引用方式 GB/T 7714	Wang, Fuqiang,Li, Ruiping,Wang, Sinan,et al. Seasonal Drought Dynamics and the Time-Lag Effect in the MU Us Sandy Land (China) Under the Lens of Climate Change[J],2024,13(3).
APA	Wang, Fuqiang.,Li, Ruiping.,Wang, Sinan.,Wang, Huan.,Shi, Yanru.,...&Yang, Jinming.(2024).Seasonal Drought Dynamics and the Time-Lag Effect in the MU Us Sandy Land (China) Under the Lens of Climate Change.LAND,13(3).
MLA	Wang, Fuqiang,et al."Seasonal Drought Dynamics and the Time-Lag Effect in the MU Us Sandy Land (China) Under the Lens of Climate Change".LAND 13.3(2024).