Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1155/2017/5209173 |
Analysis of Drought Characteristics in Xilingol Grassland of Northern China Based on SPEI and Its Impact on Vegetation | |
Tong, Siqin1,2,3; Bao, Yuhai2,3; Te, Rigele2,3; Ma, Qiyun1; Ha, Si1; Lusi, A.1 | |
通讯作者 | Bao, Yuhai |
来源期刊 | MATHEMATICAL PROBLEMS IN ENGINEERING
![]() |
ISSN | 1024-123X |
EISSN | 1563-5147 |
出版年 | 2017 |
英文摘要 | This research is based on the standardized precipitation evapotranspiration index (SPEI) and normalized difference vegetation index (NDVI) which represent the drought and vegetation condition on land. Take the linear regression method and Pearson correlation analysis to study the spatial and temporal evolution of SPEI and NDVI and the drought effect on vegetation. The results show that (1) during 1961-2015, SPEI values at different time scales showed a downward trend; SPEI-12 has a mutation in 1997 and the SPEI value significantly decreased after this year. (2) During 2000-2015, the annual growing season SPEI has an obvious upward trend in time and the apparent wetting spatially. (3) In the recent 16 years, the growing season NDVI showed an upward trend and more than 80% of the total area’s vegetation increased in Xilingol. (4) Vegetation coverage in Xilingol grew better in humid years and opposite in arid years. SPEI and NDVI had a significant positive correlation; 98% of the region showed positive correlation, indicating that meteorological drought affects vegetation growth more in arid and semiarid region. (5) The effect of drought on vegetation has lag effect, and the responses of different grassland types to different scales of drought were different. |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000394756300001 |
WOS关键词 | CLIMATE |
WOS类目 | Engineering, Multidisciplinary ; Mathematics, Interdisciplinary Applications |
WOS研究方向 | Engineering ; Mathematics |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/201070 |
作者单位 | 1.Northeast Normal Univ, Sch Environm, Changchun 130117, Peoples R China; 2.Inner Mongolia Normal Univ, Coll Geog Sci, Hohhot 010022, Peoples R China; 3.Inner Mongolia Key Lab Remote Sensing & Geog Info, Hohhot 010022, Peoples R China |
推荐引用方式 GB/T 7714 | Tong, Siqin,Bao, Yuhai,Te, Rigele,et al. Analysis of Drought Characteristics in Xilingol Grassland of Northern China Based on SPEI and Its Impact on Vegetation[J],2017. |
APA | Tong, Siqin,Bao, Yuhai,Te, Rigele,Ma, Qiyun,Ha, Si,&Lusi, A..(2017).Analysis of Drought Characteristics in Xilingol Grassland of Northern China Based on SPEI and Its Impact on Vegetation.MATHEMATICAL PROBLEMS IN ENGINEERING. |
MLA | Tong, Siqin,et al."Analysis of Drought Characteristics in Xilingol Grassland of Northern China Based on SPEI and Its Impact on Vegetation".MATHEMATICAL PROBLEMS IN ENGINEERING (2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。