干旱区生态环境知识资源中心(Arid): Evaluation of non-stationarity in summer precipitation and the response of vegetation over the typical steppe in Inner Mongolia

Arid

DOI	10.1007/s00382-021-06002-5
	Evaluation of non-stationarity in summer precipitation and the response of vegetation over the typical steppe in Inner Mongolia
	Wang, Yixuan; Duan, Limin; Liu, Tingxi; Luo, Yanyun; Li, Dongfang; Tong, Xin; Li, Wei; Lei, Huimin; Singh, V. P.
通讯作者	Liu, TX (corresponding author), Inner Mongolia Agr Univ, Water Conservancy & Civil Engn Coll, Inner Mongolia Key Lab Protect & Utilizat Water R, Hohhot 010018, Peoples R China. ; Liu, TX (corresponding author), Inner Mongolia Agr Univ, Water Conservancy & Civil Engn Coll, Zhaowuda St 306, Saihan Dist 010018, Hohhot, Peoples R China.
来源期刊	CLIMATE DYNAMICS
ISSN	0930-7575
EISSN	1432-0894
出版年	2021-10
英文摘要	The typical steppe in Inner Mongolia is an important component of the Eurasian steppes. It plays a dominant role in preventing desertification and against sandstorms, but highly sensitive and vulnerable to climate change. Based on long-term observed precipitation data and remotely sensed Normalized Difference Vegetation Index (NDVI) images, the non-stationary behavior of summer precipitation and its linkage with vegetation change were investigated, by means of incorporating time-varying and physical based explanatory covariates in non-stationary modeling. Results indicated that time-dependent models exhibited good performance to reproduce the temporal variations of eco-hydrological variables. The non-stationarity of summer precipitation was prominently visible for the majority of sites during the period from 1957 to 2017, with the mean behavior described as a linear or nonlinear time-varying pattern. In general, the steppe has experienced a decreasing trend in summer precipitation, but whether the decline tends to maintain or weaken or strengthen depends on the spatial location of the site studied. Differences appeared in the changes of vegetation in summer from 1998 to 2017 in different sub-regions. Evidences for the presence of stationary evolution was found in most sub-regions in the middle part, together with a linear increase in the westernmost sub-regions while a non-linear decrease in the easternmost sub-regions. Covariate analyses further highlighted the role of precipitation variabilities in the modeling of the NDVI-related vegetation dynamics over the steppe. The potential relations of summer precipitation to vegetation growth were characterized as both linear and non-linear positive forms. In particular, precipitation extremes could be responsible for the occurrences of exceptional cases in vegetation condition. The fluctuations in summer precipitation have crucial significance for future predictions of vegetation succession. Findings from this study would lead to additional insights to understanding the effect of climate change on grassland ecosystem processes.
英文关键词	Non-stationary precipitation Vegetation dynamic Climate change NDVI Typical steppe
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000707532800002
WOS关键词	WATER-USE EFFICIENCY ; CLIMATE-CHANGE ; SPATIOTEMPORAL VARIATIONS ; SEASONAL PRECIPITATION ; TEMPORAL VARIABILITY ; PRIMARY PRODUCTIVITY ; FLOOD FREQUENCY ; CHINA ; TRENDS ; TEMPERATURE
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
来源机构	清华大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362875
作者单位	[Wang, Yixuan; Duan, Limin; Liu, Tingxi; Luo, Yanyun; Li, Dongfang; Tong, Xin] Inner Mongolia Agr Univ, Water Conservancy & Civil Engn Coll, Inner Mongolia Key Lab Protect & Utilizat Water R, Hohhot 010018, Peoples R China; [Li, Wei] Minist Water Resources Peoples Republ China, Inst Water Resource Pastoral Area, Hohhot 010018, Inner Mongolia, Peoples R China; [Lei, Huimin] Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China; [Singh, V. P.] Texas A&M Univ, Dept Biol & Agr Engn, College Stn, TX 77843 USA; [Singh, V. P.] Texas A&M Univ, Zachry Dept Civil Engn, College Stn, TX 77843 USA; [Liu, Tingxi] Inner Mongolia Agr Univ, Water Conservancy & Civil Engn Coll, Zhaowuda St 306, Saihan Dist 010018, Hohhot, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yixuan,Duan, Limin,Liu, Tingxi,et al. Evaluation of non-stationarity in summer precipitation and the response of vegetation over the typical steppe in Inner Mongolia[J]. 清华大学,2021.
APA	Wang, Yixuan.,Duan, Limin.,Liu, Tingxi.,Luo, Yanyun.,Li, Dongfang.,...&Singh, V. P..(2021).Evaluation of non-stationarity in summer precipitation and the response of vegetation over the typical steppe in Inner Mongolia.CLIMATE DYNAMICS.
MLA	Wang, Yixuan,et al."Evaluation of non-stationarity in summer precipitation and the response of vegetation over the typical steppe in Inner Mongolia".CLIMATE DYNAMICS (2021).