Plant responses to soil heterogeneity and global environmental change.
Plant responses to soil heterogeneity and global environmental change.
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DOI：
10.1111/j.1365-2745.2012.02014.x
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发表时间：
2012-11-01
期刊：
影响因子：
--
通讯作者：
de Kroon H
中科院分区：
文献类型：
--
作者：
García-Palacios P;Maestre FT;Bardgett RD;de Kroon H
最近的证据表明，土壤养分异质性，陆地生态系统的一个普遍存在的特征，调节植物对持续的全球变化（GC）的反应。然而，我们对这种反应的总体趋势、所涉及的GC驱动因素以及受影响的植物属性知之甚少。我们综合文献来回答这个问题：土壤异质性是否显著影响植物对主要GC驱动因素的响应，例如大气二氧化碳浓度（CO2）升高，氮（N）富集和降雨状况的变化？总体而言，大多数研究都解决了短期的影响，氮富集的模式植物群落的性能，在受控条件下进行的实验。土壤异质性作为植物对CO2浓度升高反应的调节剂的作用可能取决于养分吸收模式的可塑性。土壤异质性与氮富集相互作用，以确定植物生长和养分状况，但这种相互作用的结果已被发现是协同和抑制。发表的关于土壤异质性和降雨状况变化的交互作用的研究很少，这使我们无法确定任何一般模式。我们确定了土壤异质性对植物群落动态的长期影响，以及土壤异质性× GC驱动相互作用的生态系统水平响应，作为该研究领域的主要知识空白。为了填补这些空白，使土壤异质性和GC研究向前迈进一步，我们提出了以下研究指导思想：1）将植物对土壤异质性的形态和生理反应与群落组成的野外观测和模拟模型预测相结合;（2）将土壤异质性纳入基于性状的响应-效应框架，其中植物资源利用性状既被用作对这种异质性和GC的响应变量，又被用作生态系统功能的预测因子。合成.有足够的证据表明，土壤异质性调节植物对大气CO2和N浓度升高的反应。我们的综合表明，我们必须明确考虑土壤异质性，以准确地预测植物响应GC驱动程序。
Recent evidence suggests that soil nutrient heterogeneity, a ubiquitous feature of terrestrial ecosystems, modulates plant responses to ongoing global change (GC). However, we know little about the overall trends of such responses, the GC drivers involved, and the plant attributes affected. We synthesized literature to answer the question: Does soil heterogeneity significantly affect plant responses to main GC drivers, such as elevated atmospheric carbon dioxide concentration (CO2), nitrogen (N) enrichment and changes in rainfall regime? Overall, most studies have addressed short-term effects of N enrichment on the performance of model plant communities using experiments conducted under controlled conditions. The role of soil heterogeneity as a modulator of plant responses to elevated CO2 may depend on the plasticity in nutrient uptake patterns. Soil heterogeneity does interact with N enrichment to determine plant growth and nutrient status, but the outcome of this interaction has been found to be both synergistic and inhibitory. The very few studies published on interactive effects of soil heterogeneity and changes in rainfall regime prevented us from identifying any general pattern. We identify the long-term consequences of soil heterogeneity on plant community dynamics in the field, and the ecosystem level responses of the soil heterogeneity × GC driver interaction, as the main knowledge gaps in this area of research. In order to fill these gaps and take soil heterogeneity and GC research a step forward, we propose the following research guidelines: 1) combining morphological and physiological plant responses to soil heterogeneity with field observations of community composition and predictions from simulation models; and 2) incorporating soil heterogeneity into a trait-based response-effect framework, where plant resource-use traits are used as both response variables to this heterogeneity and GC, and predictors of ecosystem functioning. Synthesis. There is enough evidence to affirm that soil heterogeneity modulates plant responses to elevated atmospheric CO2 and N enrichment. Our synthesis indicates that we must explicitly consider soil heterogeneity to accurately predict plant responses to GC drivers.
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影响因子：
5.5
作者：
Farley, RA;Fitter, AH
通讯作者：
Fitter, AH
影响因子：
7.3
作者：
De Kroon, Hans;Visser, Eric J. W.;Hutchings, Michael J.
通讯作者：
Hutchings, Michael J.
影响因子：
5.5
作者：
Fransen, B;De Kroon, H
通讯作者：
De Kroon, H
DOI：
10.1016/s1146-609x(97)80027-6
发表时间：
1997-01-01
影响因子：
1.8
作者：
Arnone, JA
通讯作者：
Arnone, JA
草地生产对单个和多种全球环境变化的反应。
影响因子：
9.8
作者：
Dukes, JS;Chiariello, NR;Cleland, EE;Moore, LA;Shaw, MR;Thayer, S;Tobeck, T;Mooney, HA;Field, CB
通讯作者：
Field, CB