Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15869 |
Stability of tropical forest tree carbon-water relations in a rainfall exclusion treatment through shifts in effective water uptake depth | |
Alexandria L. Pivovaroff; Nate G. McDowell; Tayana Barrozo Rodrigues; Tim Brodribb; Lucas A. Cernusak; Brendan Choat; Charlotte Grossiord; Yoko Ishida; Kolby J. Jardine; Susan Laurance; Riley Leff; Weibin Li; Michael Liddell; D. Scott Mackay; Heather Pacheco; Jennifer Peters; Israel de J. Sampaio Filho; Daisy C. Souza; Wenzhi Wang; Peipei Zhang; Jeff Chambers | |
2021-09-21 | |
发表期刊 | Global Change Biology
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出版年 | 2021 |
英文摘要 | Increasing severity and frequency of drought is predicted for large portions of the terrestrial biosphere, with major impacts already documented in wet tropical forests. Using a 4-year rainfall exclusion experiment in the Daintree Rainforest in northeast Australia, we examined canopy tree responses to reduced precipitation and soil water availability by quantifying seasonal changes in plant hydraulic and carbon traits for 11 tree species between control and drought treatments. Even with reduced soil volumetric water content in the upper 1 m of soil in the drought treatment, we found no significant difference between treatments for predawn and midday leaf water potential, photosynthesis, stomatal conductance, foliar stable carbon isotope composition, leaf mass per area, turgor loss point, xylem vessel anatomy, or leaf and stem nonstructural carbohydrates. While empirical measurements of aboveground traits revealed homeostatic maintenance of plant water status and traits in response to reduced soil moisture, modeled belowground dynamics revealed that trees in the drought treatment shifted the depth from which water was acquired to deeper soil layers. These findings reveal that belowground acclimation of tree water uptake depth may buffer tropical rainforests from more severe droughts that may arise in future with climate change. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
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/338698 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Alexandria L. Pivovaroff,Nate G. McDowell,Tayana Barrozo Rodrigues,et al. Stability of tropical forest tree carbon-water relations in a rainfall exclusion treatment through shifts in effective water uptake depth[J]. Global Change Biology,2021. |
APA | Alexandria L. Pivovaroff.,Nate G. McDowell.,Tayana Barrozo Rodrigues.,Tim Brodribb.,Lucas A. Cernusak.,...&Jeff Chambers.(2021).Stability of tropical forest tree carbon-water relations in a rainfall exclusion treatment through shifts in effective water uptake depth.Global Change Biology. |
MLA | Alexandria L. Pivovaroff,et al."Stability of tropical forest tree carbon-water relations in a rainfall exclusion treatment through shifts in effective water uptake depth".Global Change Biology (2021). |
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