Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/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
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ISSN | 0921-030X |
EISSN | 1573-0840 |
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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