Differences in Fine-Root Biomass of Trees and Understory Vegetation among Stand Types in Subtropical Forests
文献类型：SCI/SSCI论文
| 作者 | Fu X. L.; Wang, J. L.; Di, Y. B.; Wang, H. M. |
| 发表日期 | 2015 |
| 关键词 | below-ground carbon norway spruce species-diversity interspecific competition european beech pine productivity plantations china age |
| 英文摘要 | Variation of total fine-root biomass among types of tree stands has previously been attributed to the characteristics of the stand layers. The effects of the understory vegetation on total fine-root biomass are less well studied. We examined the variation of total fine-root biomass in subtropical tree stands at two sites of Datian and Huitong in China. The two sites have similar humid monsoon climate but different soil organic carbon. One examination compared two categories of basal areas (high vs. low basal area) in stands of single species. A second examination compared single-species and mixed stands with comparable basal areas. Low basal area did not correlate with low total fine-root biomass in the single-species stands. The increase in seedling density but decrease in stem density for the low basal area stands at Datian and the quite similar stand structures for the basal-area contrast at Huitong helped in the lack of association between basal area and total fine-root biomass at the two sites, respectively. The mixed stands also did not yield higher total fine-root biomasses. In addition to the lack of niche complementarity between tree species, the differences in stem and seedling densities and the belowground competition between the tree and non-tree species also contributed to the similarity of the total fine-root biomasses in the mixed and single-species stands. Across stand types, the more fertile site Datian yielded higher tree, non-tree and total fine-root biomasses than Huitong. However, the contribution of non-tree fine-root biomass to the total fine-root biomass was higher at Huitong (29.4%) than that at Datian (16.7%). This study suggests that the variation of total fine-root biomass across stand types not only was associated with the characteristics of trees, but also may be highly dependent on the understory layer. |
| 出处 | Plos One |
| 卷 | 10 |
| 期 | 6 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1932-6203 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38613]  |
| 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 | Fu X. L.,Wang, J. L.,Di, Y. B.,et al. Differences in Fine-Root Biomass of Trees and Understory Vegetation among Stand Types in Subtropical Forests. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
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