Drought dominates the interannual variability in global terrestrial net primary production by controlling semi-arid ecosystems

被引：117

作者：

Huang, Ling ^{[1
]}

He, Bin ^{[1
]}

Chen, Aifang ^{[2
]}

Wang, Haiyan ^{[3
]}

Liu, Junjie ^{[3
]}

Lu, Aifeng ^{[4
]}

Chen, Ziyue ^{[3
]}

机构：

[1] Beijing Normal Univ, Coll Global Change & Earth Syst Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China

[2] Univ Gothenburg, Dept Earth Sci, S-45030 Gothenburg, Sweden

[3] Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing 100875, Peoples R China

[4] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

基金：

中国国家自然科学基金;

关键词：

RESPONSES; MODIS; VEGETATION; MORTALITY; LEGACIES; DATASET; PLANTS; WATER; NDVI;

D O I：

10.1038/srep24639

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

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.

引用

页数：6

共 50 条

[1] Drought dominates the interannual variability in global terrestrial net primary production by controlling semi-arid ecosystems
Ling Huang
Bin He
Aifang Chen
Haiyan Wang
Junjie Liu
Aifeng Lű
Ziyue Chen
[J]. Scientific Reports, 6
[2] Correction: Corrigendum: Drought dominates the interannual variability in global terrestrial net primary production by controlling semi-arid ecosystems
Ling Huang
Bin He
Aifang Chen
Haiyan Wang
Junjie Liu
Aifeng Lű
Ziyue Chen
[J]. Scientific Reports, 6
[3] Drought dominates the interannual variability in global terrestrial net primary production by controlling semi-arid ecosystems (vol 6, 24639, 2016)
Huang, Ling
He, Bin
Chen, Aifang
Wang, Haiyan
Liu, Junjie
Lu, Aifeng
Chen, Ziyue
[J]. SCIENTIFIC REPORTS, 2016, 6
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[J]. Nature, 2014, 509 : 600 - 603
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