干旱区生态环境知识资源中心(Arid): Drying and Wetting Trends and Vegetation Covariations in the Drylands of China

Arid

DOI	10.3390/w12040933
	Drying and Wetting Trends and Vegetation Covariations in the Drylands of China
	Liang, Chuanzhuang 1; Chen, Tiexi 1; Dolman, Han 1,2; Shi, Tingting 3; Wei, Xueqiong 1; Xu, Jialu 4; Hagan, Daniel Fiifi Tawia 1
通讯作者	Chen, Tiexi ; Shi, Tingting
来源期刊	WATER
EISSN	2073-4441
出版年	2020
卷号	12 期号:4
英文摘要	The semi-arid and arid drylands of China, which are located in the inland region of Eurasia, have experienced rapid climate change. Some regions in particular, have shown upward trends in the observational records of precipitation. However, there is more to drying and wetting than just changes in precipitation which still have large uncertainties. Coherent results, however, can be obtained, at the regional scale, with the use of multiple indices as shown in the recent literature. We divided the drylands of China into three sub-regions, i.e., a semi-arid (SA), an eastern-arid (EA) and a western-arid (WA) region. Precipitation from the China Meteorological Administration (CMA) and Climatic Research Unit (CRU), statistical and physical drought indices, including the Standardized Precipitation Evapotranspiration Index (SPEI), the Palmer Drought Severity Index (PDSI), self-calibrating PDSI (sc PDSI), Root zone soil moisture (Root sm) and Surface soil moisture (Surf sm) from Global Land Evaporation Amsterdam Model (GLEAM), and Normalized Difference Vegetation Index (NDVI) were used to identify temporal and spatial patterns in drying and wetting. Data were selected from 1982-2012, in line with the availability of the remotely sensed vegetation data. Results show that the drylands of China exhibits a pattern of wetting in the west and drying in the east. The semi-arid region in the east is becoming drier and the drought area is increasing, with the values of CMA P, CRU P, PDSI, sc PDSI, SPEI-01,SPEI-06, SPEI-12, Root sm, Surf sm at - 1.064 mm yr(-1),-0.834 mm yr(-1),-0.050 yr(-1) (p < 0.1),-0.174 yr(-1) (p < 0.1),-0.014 yr(-1),-0.06, - 0.021 (p < 0.1),-0.257x10(-3) m(3) M-3 yr(-1),-0.024x10(-3) m(3) M-3 yr(-1), respectively. The arid region generally exhibits a wetting trend, while the area in drought declines only in the western arid region, but not in the eastern arid part. In the semi-arid region, growing season (May to September) NDVI is significantly correlated (p < 0.1) with eight out of nine indicators. We show in this study that the semi-arid region needs more study to protect the vegetation ecosystem and the water resources.
英文关键词	dryland drought index drying and wetting trend vegetation
类型	Article
语种	英语
国家	Peoples R China ; Netherlands
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000539527500010
WOS关键词	LAND-USE CHANGE ; DROUGHT INDEX ; EVAPOTRANSPIRATION ; PRECIPITATION ; DATASET
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
来源机构	南京信息工程大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/318933
作者单位	1.Nanjing Univ Informat Sci & Technol, Sch Geog Sci, Nanjing 210044, Peoples R China; 2.Free Univ Amsterdam, Dept Earth Sci, NL-1081 HV Amsterdam, Netherlands; 3.Nanjing Univ Informat Sci & Technol, Sch Appl Meteorol, Nanjing 210044, Peoples R China; 4.Nanjing Univ Informat Sci & Technol, Off Univ President, Nanjing 210044, Peoples R China
推荐引用方式 GB/T 7714	Liang, Chuanzhuang,Chen, Tiexi,Dolman, Han,et al. Drying and Wetting Trends and Vegetation Covariations in the Drylands of China[J]. 南京信息工程大学,2020,12(4).
APA	Liang, Chuanzhuang.,Chen, Tiexi.,Dolman, Han.,Shi, Tingting.,Wei, Xueqiong.,...&Hagan, Daniel Fiifi Tawia.(2020).Drying and Wetting Trends and Vegetation Covariations in the Drylands of China.WATER,12(4).
MLA	Liang, Chuanzhuang,et al."Drying and Wetting Trends and Vegetation Covariations in the Drylands of China".WATER 12.4(2020).