Testing the growth rate hypothesis in vascular plants with above- and below-ground biomass.
Testing the growth rate hypothesis in vascular plants with above- and below-ground biomass.
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用地上和地下生物量检验维管植物的生长率假设
DOI：
10.1371/journal.pone.0032162
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发表时间：
2012
期刊：
影响因子：
3.7
通讯作者：
Han X
中科院分区：
文献类型：
--
作者：
Yu Q;Wu H;He N;Lü X;Wang Z;Elser JJ;Wu J;Han X
生长速率假说（Growth rate hypothesis，GRH）认为，较高的生长速率（单位生物量的生物量变化率，μ）与较高的磷浓度和较低的C∶P和N∶P比值相关。然而，GRH对维管植物的适用性还没有得到很好的研究，地下生物量的研究也很少。结果表明，在氮限制下，三种植物地上、地下和总生物量μ与N∶C呈正相关，在磷限制下，μ与P∶C呈正相关。N∶P比值与μ呈单峰函数关系，μ越小，N∶P比值越大，达到最大值后，N∶P比值逐渐减小。μ的变化幅度与C∶N∶P化学计量比的变化呈正相关。地上生物量μ和C∶N∶P变幅与地下生物量μ和C∶N∶P变幅呈负相关。我们的研究结果证实了众所周知的增长率与组织浓度的限制营养素，并提供经验支持最近的理论配方。
The growth rate hypothesis (GRH) proposes that higher growth rate (the rate of change in biomass per unit biomass, μ) is associated with higher P concentration and lower C∶P and N∶P ratios. However, the applicability of the GRH to vascular plants is not well-studied and few studies have been done on belowground biomass. Here we showed that, for aboveground, belowground and total biomass of three study species, μ was positively correlated with N∶C under N limitation and positively correlated with P∶C under P limitation. However, the N∶P ratio was a unimodal function of μ, increasing for small values of μ, reaching a maximum, and then decreasing. The range of variations in μ was positively correlated with variation in C∶N∶P stoichiometry. Furthermore, μ and C∶N∶P ranges for aboveground biomass were negatively correlated with those for belowground. Our results confirm the well-known association of growth rate with tissue concentration of the limiting nutrient and provide empirical support for recent theoretical formulations.
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DOI：
10.1002/9781118060735.ch10
发表时间：
1985-01-01
期刊：
Horticultural Reviews
影响因子：
--
作者：
Jensen, M. H.;Collins, W. L.
通讯作者：
Collins, W. L.
影响因子：
4.5
作者：
Acharya, K;Kyle, M;Elser, JJ
通讯作者：
Elser, JJ
草地富营养化过程中的植物赢家和输家在生物量分配和菌根方面存在差异
影响因子：
4.8
作者：
Johnson, Nancy Collins;Rowland, Diane L.;Allen, Edith B.
通讯作者：
Allen, Edith B.
影响因子：
2.9
作者：
ELRIFI, IR;TURPIN, DH
通讯作者：
TURPIN, DH
影响因子：
8.8
作者：
Kerkhoff, AJ;Enquist, BJ
通讯作者：
Enquist, BJ