Changes in individual plant traits and biomass allocation in alpine meadow with elevation variation on the Qinghai-Tibetan Plateau
文献类型：期刊论文
| 作者 | Ma WeiLing ; Shi PeiLi ; Li WenHua ; He YongTao ; Zhang XianZhou ; Shen ZhenXi ; Chai SiYue |
| 刊名 | SCIENCE CHINA-LIFE SCIENCES
 |
| 出版日期 | 2010 |
| 卷号 | 53期号:9页码:1142-1151 |
| 关键词 | PINUS-SYLVESTRIS L |
| 通讯作者 | Shi PeiLi |
| 合作状况 | 国内 |
| 英文摘要 | Plant traits and individual plant biomass allocation of 57 perennial herbaceous species, belonging to three common functional groups (forbs, grasses and sedges) at subalpine (3700 m ASL), alpine (4300 m ASL) and subnival (>= 5000 m ASL) sites were examined to test the hypothesis that at high altitudes, plants reduce the proportion of aboveground parts and allocate more biomass to belowground parts, especially storage organs, as altitude increases, so as to geminate and resist environmental stress. However, results indicate that some divergence in biomass allocation exists among organs. With increasing altitude, the mean fractions of total biomass allocated to aboveground parts decreased. The mean fractions of total biomass allocation to storage organs at the subalpine site (7%+/- 2% S.E.) were distinct from those at the alpine (23%+/- 6%) and subnival (21%+/- 6%) sites, while the proportions of green leaves at all altitudes remained almost constant. At 4300 m and 5000 m, the mean fractions of flower stems decreased by 45% and 41%, respectively, while fine roots increased by 86% and 102%, respectively. Specific leaf areas and leaf areas of forbs and grasses deceased with rising elevation, while sedges showed opposite trends. For all three functional groups, leaf area ratio and leaf area root mass ratio decreased, while fine root biomass increased at higher altitudes. Biomass allocation patterns of alpine plants were characterized by a reduction in aboveground reproductive organs and enlargement of fine roots, while the proportion of leaves remained stable. It was beneficial for high altitude plants to compensate carbon gain and nutrient uptake under low temperature and limited nutrients by stabilizing biomass investment to photosynthetic structures and increasing the absorption surface area of fine roots. In contrast to forbs and grasses that had high mycorrhizal infection, sedges had higher single leaf area and more root fraction, especially fine roots. |
| 收录类别 | SCI |
| 资助信息 | the National Science & Technology Pillar Program (Grant Nos. 2007BAD80B03 and 2007BAC06B01), a West Light Joint Scholarship from the Chinese Academy of Sciences in 2008, and the National Natural Science Foundation of China (Grant Nos. 40771074 and 30700080) |
| 语种 | 中文 |
| 公开日期 | 2011-03-01 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/2150]  |
| 专题 | 地理科学与资源研究所_研究生部 |
| 推荐引用方式 GB/T 7714 | Ma WeiLing,Shi PeiLi,Li WenHua,et al. Changes in individual plant traits and biomass allocation in alpine meadow with elevation variation on the Qinghai-Tibetan Plateau[J]. SCIENCE CHINA-LIFE SCIENCES,2010,53(9):1142-1151. |
| APA | Ma WeiLing.,Shi PeiLi.,Li WenHua.,He YongTao.,Zhang XianZhou.,...&Chai SiYue.(2010).Changes in individual plant traits and biomass allocation in alpine meadow with elevation variation on the Qinghai-Tibetan Plateau.SCIENCE CHINA-LIFE SCIENCES,53(9),1142-1151. |
| MLA | Ma WeiLing,et al."Changes in individual plant traits and biomass allocation in alpine meadow with elevation variation on the Qinghai-Tibetan Plateau".SCIENCE CHINA-LIFE SCIENCES 53.9(2010):1142-1151. |
入库方式： OAI收割
来源：地理科学与资源研究所
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