Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1712381114 |
Hydrologic regulation of plant rooting depth | |
Fan, Ying1; Miguez-Macho, Gonzalo2; Jobbagy, Esteban G.3; Jackson, Robert B.4,5,6; Otero-Casal, Carlos2 | |
2017-10-03 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2017 |
卷号 | 114期号:40页码:10572-10577 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Spain; Argentina |
英文摘要 | Plant rooting depth affects ecosystem resilience to environmental stress such as drought. Deep roots connect deep soil/groundwater to the atmosphere, thus influencing the hydrologic cycle and climate. Deep roots enhance bedrock weathering, thus regulating the long-term carbon cycle. However, we know little about how deep roots go and why. Here, we present a global synthesis of 2,200 root observations of > 1,000 species along biotic (life form, genus) and abiotic (precipitation, soil, drainage) gradients. Results reveal strong sensitivities of rooting depth to local soil water profiles determined by precipitation infiltration depth from the top (reflecting climate and soil), and groundwater table depth from below (reflecting topography-driven land drainage). In well-drained uplands, rooting depth follows infiltration depth; in waterlogged lowlands, roots stay shallow, avoiding oxygen stress below the water table; in between, high productivity and drought can send roots many meters down to the groundwater capillary fringe. This framework explains the contrasting rooting depths observed under the same climate for the same species but at distinct topographic positions. We assess the global significance of these hydrologic mechanisms by estimating root water-uptake depths using an inverse model, based on observed productivity and atmosphere, at 30. (similar to 1-km) global grids to capture the topography critical to soil hydrology. The resulting patterns of plant rooting depth bear a strong topographic and hydrologic signature at landscape to global scales. They underscore a fundamental plant-water feedback pathway that may be critical to understanding plant-mediated global change. |
英文关键词 | plant rooting depth soil hydrology global change biology infiltration depth water table depth |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000412130500045 |
WOS关键词 | EARTHS CRITICAL ZONE ; WATER-UPTAKE ; DEEP ROOTS ; SOIL CHARACTERISTICS ; GROUNDWATER ; CARBON ; ECOSYSTEM ; SCALE ; TREES ; CALIFORNIA |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
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/204797 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Rutgers State Univ, Dept Earth & Planetary Sci, New Brunswick, NJ 08854 USA; 2.Univ Santiago de Compostela, Nonlinear Phys Grp, Fac Phys, E-15782 Santiago De Compostela, Galicia, Spain; 3.Univ Nacl San Luis, Inst Matemat Aplicada San Luis, Consejo Nacl Invest Cientif & Tecn, Grp Estudios Ambientales, RA-D5700HHW San Luis, Argentina; 4.Stanford Univ, Dept Earth Syst Sci, Stanford, CA 94305 USA; 5.Stanford Univ, Woods Inst Environm, Stanford, CA 94305 USA; 6.Stanford Univ, Precourt Inst Energy, Stanford, CA 94305 USA |
推荐引用方式 GB/T 7714 | Fan, Ying,Miguez-Macho, Gonzalo,Jobbagy, Esteban G.,et al. Hydrologic regulation of plant rooting depth[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2017,114(40):10572-10577. |
APA | Fan, Ying,Miguez-Macho, Gonzalo,Jobbagy, Esteban G.,Jackson, Robert B.,&Otero-Casal, Carlos.(2017).Hydrologic regulation of plant rooting depth.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,114(40),10572-10577. |
MLA | Fan, Ying,et al."Hydrologic regulation of plant rooting depth".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 114.40(2017):10572-10577. |
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