Hydraulic and Photosynthetic Traits Vary with Successional Status of Woody Plants on the Loess Plateau
Hydraulic and Photosynthetic Traits Vary with Successional Status of Woody Plants on the Loess Plateau
复制标题
黄土高原木本植物水力和光合特性随演替状况的变化
作者：
Yin Qiulong;He Jingwen;Tian Tingting;Quan Jiaxin;Zhao Peng;Chai Yongfu;Wang Lei;Yue Ming
研究重点：水分输送和CO2扩散是决定叶片CO2同化效率的两个重要过程。叶片经济性状和水力性状的整合将有助于对干旱区木本植物演替有更全面的认识。但是，相对于干旱区不同演替阶段植物水力性状的研究，目前对干旱区植物水力性状的研究还比较少。材料与方法：选取黄土高原灌木期、拓荒树期和演替后期的31种树种，对其5项经济性状和5项水力性状进行了测定。结果：先锋树期的树种表现出“快速生长”的特点，最大净光合速率（Pmax）和叶脉密度（VD）较高。演替后期的物种表现出“生长缓慢”的特征，Pmax和VD较低。除Pmax外，经济性状在三个阶段间无显著差异。水力学性状，如VD、叶面积/边材面积比和导管频率，在不同时期表现出显著差异。结论：水力学在干旱区木本植物演替中可能起重要作用。在今后的研究中，应结合水力性状和Pmax来研究木本植物的演替。先锋树的“速生”特征和后期演替树的“慢生”特征可能诱导木本植物的演替。
Research highlights: Water transport and CO2 diffusion are two important processes that determine the CO2 assimilation efficiency in leaves. The integration of leaf economic and hydraulic traits will help to present a more comprehensive view of the succession of woody plants in arid regions. However, studies on hydraulic traits of plants from different successional stages are still rare compared to that on economic traits in arid regions. Materials and methods: We selected 31 species from shrub stage, pioneer tree stage and late successional stage on the Loess Plateau, and measured five economic traits and five hydraulic traits of these species. Results: We found species from the pioneer tree stage exhibited "fast-growing" characteristics with high maximum net photosynthesis rate (Pmax) and vein density (VD). Species from the late successional stage exhibited "slow-growing" characteristics with low Pmax and VD. Economic traits showed no significant differences among the three stages except for Pmax. Hydraulic traits, such as VD, leaf area to sapwood area ratio and vessel frequency, exhibited significant differences among different stages. Conclusions: Hydraulics may play an important role in the succession of woody plants in arid regions. Hydraulic traits and Pmax, should be combined to investigate succession of woody plants in future studies. The "fast-growing" characteristics of pioneer trees and "slow-growing" characteristics of late successional trees may induce the succession of woody plants.
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DOI：
--
发表时间：
2004
期刊：
--
影响因子：
--
作者：
I. Wright;P. Reich;M. Westoby;D. Ackerly;Z. Baruch;F. Bongers;J. Cavender-Bares;F. Chapin;J. Cornelissen;M. Diemer;J. Flexas;E. Garnier;P. Groom;J. Gulías;K. Hikosaka;B. Lamont;Tali D. Lee;C. Lusk;J. Midgley;M. Navas;Ue. Niinemets;J. Oleksyn;N. Osada;H. Poorter;P. Poot;L. Prior;V. Pyankov;C. Roumet;S. Thomas;M. Tjoelker;E. Veneklaas;R. Villar
通讯作者：
I. Wright;P. Reich;M. Westoby;D. Ackerly;Z. Baruch;F. Bongers;J. Cavender-Bares;F. Chapin;J. Cornelissen;M. Diemer;J. Flexas;E. Garnier;P. Groom;J. Gulías;K. Hikosaka;B. Lamont;Tali D. Lee;C. Lusk;J. Midgley;M. Navas;Ue. Niinemets;J. Oleksyn;N. Osada;H. Poorter;P. Poot;L. Prior;V. Pyankov;C. Roumet;S. Thomas;M. Tjoelker;E. Veneklaas;R. Villar
区分栖息地专业化和扩散限制对物种周转的重要性
影响因子：
2.6
作者：
Wang, Shixiong;Wang, Xiaoan;Guo, Hua;Fan, Weiyi;Lv, Haiying;Duan, Renyan
通讯作者：
Duan, Renyan
影响因子：
2.7
作者：
McCulloh, Katherine A.;Meinzer, Frederick C.;Domec, Jean-Christophe
通讯作者：
Domec, Jean-Christophe
DOI：
10.1111/j.1471-8286.2004.00829.x
发表时间：
2005-03
期刊：
Molecular Ecology Notes
影响因子：
--
作者：
Campbell O. Webb;M. Donoghue
通讯作者：
Campbell O. Webb;M. Donoghue
影响因子：
9.4
作者：
Mitchell, Patrick J.;O'Grady, Anthony P.;Pinkard, Elizabeth A.
通讯作者：
Pinkard, Elizabeth A.