Testing the Growth Rate Hypothesis in Vascular Plants with Above- and Below-Ground Biomass
文献类型：SCI/SSCI论文
| 作者 | Yu Q. |
| 发表日期 | 2012 |
| 关键词 | n-p stoichiometry biological stoichiometry leaf nitrogen phosphorus limitation nutrient limitation mineral-nutrition ratios ecosystems deposition rna |
| 英文摘要 | The growth rate hypothesis (GRH) proposes that higher growth rate (the rate of change in biomass per unit biomass, mu) 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, mu 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 mu, increasing for small values of mu, reaching a maximum, and then decreasing. The range of variations in mu was positively correlated with variation in C: N: P stoichiometry. Furthermore, mu 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. |
| 出处 | Plos One |
| 卷 | 7 |
| 期 | 3 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1932-6203 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/26707]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Yu Q.. Testing the Growth Rate Hypothesis in Vascular Plants with Above- and Below-Ground Biomass. 2012. |
入库方式： OAI收割
来源：地理科学与资源研究所
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