Arid
DOI10.1007/s11069-018-3282-3
The relationship between drought activity and vegetation cover in Northwest China from 1982 to 2013
Jiang, Yelin1,2; Wang, Ranghui1,2; Peng, Qing1; Wu, Xiaoquan1; Ning, Husen3; Li, Cheng1
通讯作者Wang, Ranghui
来源期刊NATURAL HAZARDS
ISSN0921-030X
EISSN1573-0840
出版年2018
卷号92页码:145-163
英文摘要

We investigated drought activity and the relationship between drought and vegetation in Northwest China over the period 1982-2013 using the standardized precipitation evapotranspiration index (SPEI) and the normalized difference vegetation index (NDVI). The indexes were, respectively, calculated from ground-based meteorological data and from remotely sensed satellite data. The spatial and temporal distributions of drought (SPEI) and of vegetation cover (NDVI) were compared using annual trends, and the relationships between these trends were analyzed. The results are: (1) Overall, Northwest China had a drought trend during the study period, although some a few regions show a significant wetness trend; (2) the mean annual NDVI fluctuates, but overall shows an increasing trend, particularly in some mountainous areas that have at least adequate water and vegetation cover, while unused land becomes degraded; (3) most regions show a positive correlation between SPEI and NDVI, although the western parts of the Tarim basin, Qaidam basin, and some regions in the southeastern part of study area show a negative correlation; and (4) the various regions respond differently to global climate change, but in general regions with more vegetation cover show increased vegetation growth, while regions with less vegetation cover are becoming degraded and thus more vulnerable to the adverse effects of climate change.


英文关键词Climate change Drought SPEI NDVI Land use Arid and semiarid land Northwest China
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000450655600011
WOS关键词NET PRIMARY PRODUCTION ; PRIMARY PRODUCTIVITY ; CLIMATE-CHANGE ; RIVER-BASIN ; ARID REGION ; PRECIPITATION ; VARIABILITY ; DYNAMICS ; PATTERNS ; IMPACT
WOS类目Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS研究方向Geology ; Meteorology & Atmospheric Sciences ; 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/2XILL650/211768
作者单位1.Nanjing Univ Informat Sci & Technol, Sch Appl Meteorol, Nanjing 210044, Jiangsu, Peoples R China;
2.Collaborat Innovat Ctr Atmospher Environm & Equip, Nanjing 210044, Jiangsu, Peoples R China;
3.Xinjiang Acad Forestry Sci, Urumqi 830063, Peoples R China
推荐引用方式
GB/T 7714
Jiang, Yelin,Wang, Ranghui,Peng, Qing,et al. The relationship between drought activity and vegetation cover in Northwest China from 1982 to 2013[J]. 南京信息工程大学,2018,92:145-163.
APA Jiang, Yelin,Wang, Ranghui,Peng, Qing,Wu, Xiaoquan,Ning, Husen,&Li, Cheng.(2018).The relationship between drought activity and vegetation cover in Northwest China from 1982 to 2013.NATURAL HAZARDS,92,145-163.
MLA Jiang, Yelin,et al."The relationship between drought activity and vegetation cover in Northwest China from 1982 to 2013".NATURAL HAZARDS 92(2018):145-163.
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