Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41561-018-0133-5 |
Tall Amazonian forests are less sensitive to precipitation variability | |
Giardina, Francesco1,2; Konings, Alexandra G.3; Kennedy, Daniel4; Alemohammad, Seyed Hamed4; Oliveira, Rafael S.5,6; Uriarte, Maria7; Gentine, Pierre4,8 | |
2018-06-01 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2018 |
卷号 | 11期号:6页码:405-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Switzerland; Brazil; Australia |
英文摘要 | Climate change is altering the dynamics, structure and function of the Amazon, a biome deeply connected to the Earth's carbon cycle. Climate factors that control the spatial and temporal variations in forest photosynthesis have been well studied, but the influence of forest height and age on this controlling effect has rarely been considered. Here, we present remote sensing observations of solar-induced fluorescence (a proxy for photosynthesis), precipitation, vapour-pressure deficit and canopy height, together with estimates of forest age and aboveground biomass. We show that photosynthesis in tall Amazonian forests, that is, forests above 30 m, is three times less sensitive to precipitation variability than in shorter (less than 20 m) forests. Taller Amazonian forests are also found to be older, have more biomass and deeper rooting systems(1), which enable them to access deeper soil moisture and make them more resilient to drought. We suggest that forest height and age are an important control of photosynthesis in response to interannual precipitation fluctuations. Although older and taller trees show less sensitivity to precipitation variations, they are more susceptible to fluctuations in vapour-pressure deficit. Our findings illuminate the response of Amazonian forests to water stress, droughts and climate change. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000433901600012 |
WOS关键词 | CHLOROPHYLL FLUORESCENCE ; PHOTOSYNTHETIC SEASONALITY ; DROUGHT SENSITIVITY ; TROPICAL FORESTS ; CARBON BALANCE ; CLIMATE ; WATER ; RAIN ; SIMULATIONS ; RESOLUTION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/34722 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Columbia Univ, Dept Earth & Environm Engn, New York, NY USA; 2.Ecole Polytech Fed Lausanne, Lausanne, Switzerland; 3.Stanford Univ, Dept Earth Syst Sci, Stanford, CA 94305 USA; 4.Columbia Univ, Dept Earth & Environm Engn, New York, NY 10027 USA; 5.Univ Estadual Campinas, Dept Biol Vegetal, Campinas, SP, Brazil; 6.Univ Western Australia, Sch Plant Biol, Perth, WA, Australia; 7.Columbia Univ, Dept Ecol Evolut & Environm Biol, New York, NY USA; 8.Columbia Univ, Earth Inst, New York, NY 10027 USA |
推荐引用方式 GB/T 7714 | Giardina, Francesco,Konings, Alexandra G.,Kennedy, Daniel,et al. Tall Amazonian forests are less sensitive to precipitation variability[J]. NATURE GEOSCIENCE,2018,11(6):405-+. |
APA | Giardina, Francesco.,Konings, Alexandra G..,Kennedy, Daniel.,Alemohammad, Seyed Hamed.,Oliveira, Rafael S..,...&Gentine, Pierre.(2018).Tall Amazonian forests are less sensitive to precipitation variability.NATURE GEOSCIENCE,11(6),405-+. |
MLA | Giardina, Francesco,et al."Tall Amazonian forests are less sensitive to precipitation variability".NATURE GEOSCIENCE 11.6(2018):405-+. |
条目包含的文件 | 条目无相关文件。 |
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。
修改评论