Analysis of vegetation response to rainfall with satellite images in Dongting Lake
文献类型：SCI/SSCI论文
| 作者 | Jiang W. G. ; Hou P. ; Zhu X. H. ; Cao G. Z. ; Liu X. M. ; Cao R. Y. |
| 发表日期 | 2011 |
| 关键词 | eco-hydrology precipitation vegetation remote sensing wetland Dongting Lake atmospheric precipitation interannual variability noaa-avhrr region index |
| 英文摘要 | We analyzed the Normalized Difference Vegetation Index (NDVI) from satellite images and precipitation data from meteorological stations from 1998 to 2007 in the Dongting Lake wetland watershed to better understand the eco-hydrological effect of atmospheric precipitation and its relationship with vegetation. First, we analyzed its general spatio-temporal distribution using its mean, standard deviation and linear trend. Then, we used the Empirical Orthogonal Functions (EOF) method to decompose the NDVI and precipitation data into spatial and temporal modes. We selected four leading modes based on North and Scree test rules and analyzed the synchronous seasonal and inter-annual variability between the vegetation index and precipitation, distinguishing time-lagged correlations between EOF modes with the correlative degree analysis method. According to our detailed analyses, the vegetation index and precipitation exhibit a prominent correlation in spatial distribution and seasonal variation. At the 90% confidence level, the time lag is around 110 to 140 days, which matches well with the seasonal variation. |
| 出处 | Journal of Geographical Sciences |
| 卷 | 21 |
| 期 | 1 |
| 页 | 135-149 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1009-637X |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/23751]  |
| 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 | Jiang W. G.,Hou P.,Zhu X. H.,et al. Analysis of vegetation response to rainfall with satellite images in Dongting Lake. 2011. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
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。