Vertical and leaf-age-related variations of nonstructural carbohydrates in two alpine timberline species, southeastern Tibetan Plateau
文献类型：期刊论文
| 作者 | Li, MC; Kong, GQ; Zhu, JJ; Li, MC, Chinese Acad Sci, Inst Appl Ecol, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| 刊名 | JOURNAL OF FOREST RESEARCH
 |
| 出版日期 | 2009 |
| 卷号 | 14期号:4页码:229-235 |
| ISSN号 | 1341-6979 |
| 关键词 | Alpine Timberline Canopy Height Carbon Balance Leaf Age Nonstructural Carbohydrates |
| 英文摘要 | Spatial pattern of nonstructural carbohydrates (NSC) was analyzed in two alpine timberline species (Abies georgei and Juniperus saltuaria) growing at the timberline in Sergyemla Mountain, southeastern Tibetan Plateau. We aimed to examine the effect of canopy height and leaf age on balance between carbon uptake and consumption of timberline tree species in extremely environmental condition. The results showed that no significantly vertical variation in sugars, starch or NSC (soluble sugars plus starch) in A. georgei was found for any aged needles. Also, there were no significant differences among vertical gradients in both current and last-year leaves for J. saltuaria. However, different-aged needles/leaves showed significant differences in NSC concentrations in both A. georgei and J. saltuaria. For A. georgei, needle mean NSC across vertical canopies showed a significant increase from current-year to 2-year needles (P < 0.05), followed by a gradual decrease from 2- to 5-year needles (P < 0.05), whereas for J. saltuaria, last-year leaves had significant higher NSC except sugars compared with current-year leaves across canopies (P < 0.01). The observed trends of NSC along vertical canopy heights and leaf ages suggested that, in extreme environmental condition, not only light-induced carbon acquisition in photosynthesis but also carbohydrate export from leaves should be taken into account to explain the spatial pattern of NSC. |
| 学科主题 | Forestry |
| 语种 | 英语 |
| WOS记录号 | WOS:000268102800005 |
| 资助机构 | National Natural Science Foundation of China [30671669]; Chinese Academy of Sciences [KZCX3-SW-418] |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/54093]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所 |
| 通讯作者 | Li, MC, Chinese Acad Sci, Inst Appl Ecol, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, MC,Kong, GQ,Zhu, JJ,et al. Vertical and leaf-age-related variations of nonstructural carbohydrates in two alpine timberline species, southeastern Tibetan Plateau[J]. JOURNAL OF FOREST RESEARCH,2009,14(4):229-235. |
| APA | Li, MC,Kong, GQ,Zhu, JJ,&Li, MC, Chinese Acad Sci, Inst Appl Ecol, 72 Wenhua Rd, Shenyang 110016, Peoples R China.(2009).Vertical and leaf-age-related variations of nonstructural carbohydrates in two alpine timberline species, southeastern Tibetan Plateau.JOURNAL OF FOREST RESEARCH,14(4),229-235. |
| MLA | Li, MC,et al."Vertical and leaf-age-related variations of nonstructural carbohydrates in two alpine timberline species, southeastern Tibetan Plateau".JOURNAL OF FOREST RESEARCH 14.4(2009):229-235. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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