Assessment of the sensitivity of vegetation to El-Nino/Southern Oscillation events over China
文献类型：EI期刊论文
| 作者 | Lu A. ; Zhu W. ; Jia S. |
| 发表日期 | 2012 |
| 关键词 | Nickel compounds Ecosystems Radiometers Satellite imagery Sensitivity analysis Vegetation |
| 英文摘要 | This research explores the sensitivity of vegetation in China to El-Nino/Southern Oscillation (ENSO) events from 1982 to 2006 The ENSO events are defined by the Multivariate ENSO Index (MEI), and variation in vegetation cover is captured by the Advanced Very High Resolution Radiometer (AVHRR) Normalized Difference Vegetation Index (NDVI) Pearson's x2 test was used to identify the areas where the variation in vegetation was sensitive to El Nino and La Nina events The difference in the sensitivity of various ecosystems was investigated using the Moderate Resolution Imaging Spectroradiometer (MODIS) land cover product in 2000 Composite NDVI graphs during El Nino, La Nina and non-ENSO years were also produced to investigate the ENSO relationship with the six vegetation ecosystems during El Nino, La Nina and normal phases The results show that most of the ENSO-sensitive land in China is only affected by one of the two phases of ENSO events, and the area of El Nino-sensitive vegetation is much larger than that of La Nina-sensitive vegetation North China and the Hengduan Mountains are the two cores of the El Nino-sensitive areas, while the La Nina-sensitive areas are mainly distributed in the central, northwest and northeast regions of China The sensitivity of vegetation varies across ecosystems: grassland and shrubland had the largest share of El Nino-sensitive areas, and sparse vegetation and savanna were the most sensitive to La Nina events Overall, the impacts of El Nino events on vegetation in China had regular seasonal variation, while the impacts of La Nina events had regular zonal distribution. 2012 COSPAR Published by Elsevier Ltd All rights reserved. |
| 出处 | Advances in Space Research
 |
| 卷 | 50期:10页:1362-1373 |
| 收录类别 | EI |
| 语种 | 英语 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/31325]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Lu A.,Zhu W.,Jia S.. Assessment of the sensitivity of vegetation to El-Nino/Southern Oscillation events over China. 2012. |
入库方式： OAI收割
来源：地理科学与资源研究所
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