Biomass allocation patterns of alpine grassland species and functional groups along a precipitation gradient on the Northern Tibetan Plateau
文献类型：SCI/SSCI论文
| 作者 | Wu J. S. ; Shen Z. X. ; Zhang X. Z. ; Shi P. L. |
| 发表日期 | 2013 |
| 关键词 | Biomass fractions Complementary response Functional components Functional groups Changtang Plateau china grasslands inner-mongolia climate-change plants root allometry traits light plasticity ratios |
| 英文摘要 | Variations in the fractions of biomass allocated to functional components are widely considered as plant responses to resource availability for grassland plants. Observations indicated shoots isometrically relates to roots at the community level but allometrically at the species level in Tibetan alpine grasslands. These differences may result from the specific complementarity of functional groups between functional components, such as leaf, root, stem and reproductive organ. To test the component complementary responses to regional moisture variation, we conducted a multi-site transect survey to measure plant individual size and component biomass fractions of common species belonging to the functional groups: forbs, grasses, legumes and sedges on the Northern Tibetan Plateau in peak growing season in 2010. Along the mean annual precipitation (MAP) gradient, we sampled 70 species, in which 20 are in alpine meadows, 20 in alpine steppes, 15 in alpine desert-steppes and 15 in alpine deserts, respectively. Our results showed that the size of alpine plants is small with individual biomass mostly lower than 1.0 g. Plants keep relative conservative component fractions across alpine grasslands at the individual level. However, the complementary responses between functional components to moisture variations specifically differ among functional groups. These results indicate that functional group diversity may be an effective tool for scaling biomass allocation patterns from individual up to community level. Therefore, it is necessary and valuable to perform intensive and systematic studies on identification and differentiation the influences of compositional changes in functional groups on ecosystem primary services and processes. |
| 出处 | Journal of Mountain Science |
| 卷 | 10 |
| 期 | 6 |
| 页 | 1097-1108 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1672-6316 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/30154]  |
| 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 | Wu J. S.,Shen Z. X.,Zhang X. Z.,et al. Biomass allocation patterns of alpine grassland species and functional groups along a precipitation gradient on the Northern Tibetan Plateau. 2013. |
入库方式： OAI收割
来源：地理科学与资源研究所
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