Below-ground determinants and ecological implications of shrub species' degree of isohydry in subtropical pine plantations
文献类型：期刊论文
| 作者 | Jiang, Peipei1,3; Meinzer, Frederick C.2; Wang, Huimin1,3 ; Kou, Liang1,3; Dai, Xiaoqin1,3; Fu, Xiaoli1,3
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| 刊名 | NEW PHYTOLOGIST
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| 出版日期 | 2020-06-01 |
| 卷号 | 226期号:6页码:1656-1666 |
| ISSN号 | 0028-646X |
| 关键词 | deep soil water uptake hydraulic conductance resource-use efficiency shallow absorptive root water storage |
| DOI | 10.1111/nph.16502 |
| 通讯作者 | Fu, Xiaoli(fuxl@igsnrr.ac.cn) |
| 英文摘要 | The degree of plant iso/anisohydry is a popular framework for characterising species-specific drought responses. However, we know little about associations between below-ground and above-ground hydraulic traits as well as the broader ecological implications of this framework. For 24 understory shrub species in seasonally dry subtropical coniferous plantations, we investigated contributions of the degree of isohydry to species' resource economy strategies, abundance, and importance value, and quantified the hydraulic conductance (K-h) of above-ground and below-ground organs, magnitude of deep water acquisition (WA(deep)), shallow absorptive root traits (diameter, specific root length, tissue density), and resource-use efficiencies (A(max), maximum photosynthesis rate; PNUE, photosynthetic nitrogen-use efficiency). The extreme isohydric understory species had lower wood density (a proxy for higher growth rates) because their higher WA(deep) and whole-plant K-h allowed higher A(max) and PNUE, and thus did not necessarily show lower abundance and importance values. Although species' K-h was coordinated with their water foraging capacity in shallow soil, the more acquisitive deep roots were more crucial than shallow roots in shaping species' extreme isohydric behaviour. Our results provide new insights into the mechanisms through which below-ground hydraulic traits, especially those of deep roots, determine species' degree of isohydry and economic strategies. |
| WOS关键词 | ROOT XYLEM EMBOLISM ; HYDRAULIC TRAITS ; WATER-UPTAKE ; DOUGLAS-FIR ; SPATIAL-DISTRIBUTION ; TROPICAL FORESTS ; GLOBAL CHANGE ; LIFE-HISTORY ; DROUGHT ; MORTALITY |
| 资助项目 | National Natural Science Foundations of China[31730014] ; National Natural Science Foundations of China[41671224] ; National Natural Science Foundations of China[41830646] |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000531690900001 |
| 资助机构 | National Natural Science Foundations of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/159778]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Fu, Xiaoli |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Qianyanzhou Ecol Res Stn, Beijing 100101, Peoples R China 2.US Forest Serv, USDA, Pacific Northwest Res Stn, Corvallis, OR 97331 USA 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Peipei,Meinzer, Frederick C.,Wang, Huimin,et al. Below-ground determinants and ecological implications of shrub species' degree of isohydry in subtropical pine plantations[J]. NEW PHYTOLOGIST,2020,226(6):1656-1666. |
| APA | Jiang, Peipei,Meinzer, Frederick C.,Wang, Huimin,Kou, Liang,Dai, Xiaoqin,&Fu, Xiaoli.(2020).Below-ground determinants and ecological implications of shrub species' degree of isohydry in subtropical pine plantations.NEW PHYTOLOGIST,226(6),1656-1666. |
| MLA | Jiang, Peipei,et al."Below-ground determinants and ecological implications of shrub species' degree of isohydry in subtropical pine plantations".NEW PHYTOLOGIST 226.6(2020):1656-1666. |
入库方式： OAI收割
来源：地理科学与资源研究所
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