Drought dominates the interannual variability in global terrestrial net primary production by controlling semi-arid ecosystems
文献类型：SCI/SSCI论文
| 作者 | Huang L.; He, B.; Chen, A. F.; Wang, H. Y.; Liu, J. J.; Lu, A. F.; Chen, Z. Y. |
| 发表日期 | 2016 |
| 关键词 | carbon-cycle responses modis vegetation mortality legacies dataset stress models plants |
| 英文摘要 | Drought is a main driver of interannual variation in global terrestrial net primary production. However, how and to what extent drought impacts global NPP variability is unclear. Based on the multi-timescale drought index SPEI and a satellite-based annual global terrestrial NPP dataset, we observed a robust relationship between drought and NPP in both hemispheres. In the Northern Hemisphere, the annual NPP trend is driven by 19-month drought variation, whereas that in the Southern Hemisphere is driven by 16-month drought variation. Drought-dominated NPP, which mainly occurs in semi-arid ecosystems, explains 29% of the interannual variation in global NPP, despite its 16% contribution to total global NPP. More surprisingly, drought prone ecosystems in the Southern Hemisphere, which only account for 7% of the total global NPP, contribute to 33% of the interannual variation in global NPP. Our observations support the leading role of semi-arid ecosystems in interannual variability in global NPP and highlight the great impacts of long-term drought on the global carbon cycle. |
| 出处 | Scientific Reports |
| 卷 | 6 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 2045-2322 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/43240]  |
| 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 | Huang L.,He, B.,Chen, A. F.,et al. Drought dominates the interannual variability in global terrestrial net primary production by controlling semi-arid ecosystems. 2016. |
入库方式： OAI收割
来源：地理科学与资源研究所
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