Investigating natural drivers of vegetation coverage variation using MODIS imagery in Qinghai, China
文献类型：SCI/SSCI论文
| 作者 | Zhou L.; Lyu, A. F.; Huang, M |
| 发表日期 | 2016 |
| 关键词 | vegetation coverage remote sensing MODIS climate change desertification variability dynamics land drought climate derivation patterns plateau area |
| 英文摘要 | The climatically sensitive Qinghai province of China has been recognized as a hotspot for studies on the feedbacks of terrestrial ecosystems to global climate change. Thus, investigating vegetation coverage and its natural drivers in Qinghai is an important focus of ecosystem research. On the basis of Moderate Resolution Imaging Spectroradiometer (MODIS) Enhanced Vegetation Index (EVI) time series data, we estimated the vegetation coverage in this region using the dimidiate pixel model. Trend analyses, correlations between meteorological parameters, changes in vegetation coverage, and the temporal and spatial relationships between soil texture and vegetation coverage were used to investigate the possible drivers of vegetation coverage variations. The results indicated that the reduction of vegetation coverage slowed down in the period from 2000 to 2012. Annual mean temperature was the main climatic driver of the total extremely low and low vegetation coverage areas in Qinghai, followed by the precipitation anomalies. The extremely low and low vegetation coverage areas were mainly distributed in regions with a mean annual relative air humidity of < 40% and the spatial distributions of these two area types differentiated along the 200-mm rainfall contours. The total extremely low and low vegetation coverage areas were mainly characterized by sandy clay loam soil, followed by loamy sand and sandy soil. Regions with sandy loam or loam soil have the greatest risk of vegetation coverage reductions. Knowledge of vegetation coverage variation and its natural drivers in the ecologically fragile region of Qinghai can provide scientific support for managing environmental change and desertification. |
| 出处 | Journal of Arid Land |
| 卷 | 8 |
| 期 | 1 |
| 页 | 109-124 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1674-6767 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/43956]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_生态网络实验室 |
| 推荐引用方式 GB/T 7714 | Zhou L.,Lyu, A. F.,Huang, M. Investigating natural drivers of vegetation coverage variation using MODIS imagery in Qinghai, China. 2016. |
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。