Water use strategies determine divergent growth trends of spruce and juniper on the southeastern Tibetan plateau
文献类型：期刊论文
| 作者 | Wang, Lu5; Liu, Hongyan6; Shi, Liang8; Zhang, Xianliang7; Liang, Boyi4; Huang, Ru3; Leavitt, Steven1; Yue, Yuemin5; Wang, Kelin5; Inger, Jussi Griessinger2 |
| 刊名 | FOREST ECOSYSTEMS
 |
| 出版日期 | 2024 |
| 卷号 | 11页码:9 |
| 关键词 | Tree rings Climate changes Intrinsic water-use efficiency (iWUE) Dual-isotope approach Tibetan plateau |
| ISSN号 | 2095-6355 |
| DOI | 10.1016/j.fecs.2024.100248 |
| 产权排序 | 3 |
| 英文摘要 | Warming and increased CO2 levels are generally believed to enhance photosynthetic rates (A) and tree growth, especially in alpine treelines. However, this positive effect may be limited by moisture availability. Here we compare the radial growth and intrinsic water use efficiency (iWUE) of two widely-distributed evergreen needleleaf species, Tibetan juniper (Juniperus tibetica) and Balfour spruce (Picea balfouriana), at the same site near the treeline on the southeastern Tibetan Plateau using tree-ring width and dual isotopes (delta 13C and delta 18O). We observed that with a 70-ppm increase in atmospheric CO2 from 1954 to 2007, juniper radial growth was significantly stimulated, whereas spruce growth remained constant. Correlation analysis between tree-ring width and climate factors revealed that spruce was more moisture-sensitive than juniper. Although the increases in iWUE for juniper (22%) and spruce (26%) were similar, iWUE changes in spruce were more influenced by stomatal conductance (gs) rather than A, supporting that moisture availability inhibits spruce growth. Our study implies that predicting growth dynamics in alpine forests based on the growth-temperature relationship may be inadequate, as they are likely moisture-limited. It also suggests that increases in A may not be as widespread as previously thought, which helps improve forest productivity modeling. |
| WOS关键词 | ISOTOPE CONCEPTUAL-MODEL ; TREE GROWTH ; USE EFFICIENCY ; STOMATAL CONDUCTANCE ; DAHURIAN LARCH ; CLIMATE ; CARBON ; CO2 ; RESPONSES ; FOREST |
| 资助项目 | National Natural Science Foundation of China[42161144008] |
| WOS研究方向 | Forestry |
| 语种 | 英语 |
| WOS记录号 | WOS:001336042600001 |
| 出版者 | KEAI PUBLISHING LTD |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/209693]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 通讯作者 | Liu, Hongyan |
| 作者单位 | 1.Univ Arizona, Lab Tree Ring Res, Tucson, AZ USA 2.Friedrich Alexander Univ Erlangen Nurnberg, Inst Geog, Erlangen, Germany 3.Natl Inst Nat Hazards, Beijing 100085, Peoples R China 4.Beijing Forestry Univ, Coll Forestry, Precis Forestry Key Lab Beijing, Beijing 100083, Peoples R China 5.Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Peoples R China 6.Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China 7.Hebei Agr Univ, Coll Forestry, Baoding 071001, Peoples R China 8.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Lu,Liu, Hongyan,Shi, Liang,et al. Water use strategies determine divergent growth trends of spruce and juniper on the southeastern Tibetan plateau[J]. FOREST ECOSYSTEMS,2024,11:9. |
| APA | Wang, Lu.,Liu, Hongyan.,Shi, Liang.,Zhang, Xianliang.,Liang, Boyi.,...&Inger, Jussi Griessinger.(2024).Water use strategies determine divergent growth trends of spruce and juniper on the southeastern Tibetan plateau.FOREST ECOSYSTEMS,11,9. |
| MLA | Wang, Lu,et al."Water use strategies determine divergent growth trends of spruce and juniper on the southeastern Tibetan plateau".FOREST ECOSYSTEMS 11(2024):9. |
入库方式： OAI收割
来源：地理科学与资源研究所
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