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| DOI | 10.1016/j.agrformet.2024.110021 |
| The impact of elevated CO 2 concentration on photosynthesis, growth and hydraulics of evergreen and deciduous tree seedlings from a subtropical forest in Southwest China | |
| 发表日期 | 2024 |
| ISSN | 0168-1923 |
| EISSN | 1873-2240 |
| 起始页码 | 352 |
| 卷号 | 352 |
| 英文摘要 | Elevated CO2 concentration (eCO2) in the atmosphere is expected to impact plant water relations and growth in several ecosystems across the globe. However, we still know little about such impact on tree species in subtropical regions. The present study investigated the impact of eCO2 on leaf gas exchange, nitrogen and phosphorus concentrations, leaf and stem hydraulic conductivity, and growth of seedlings of four evergreen and four deciduous tree species from a subtropical forest in Southwest China. We found that both evergreen and deciduous tree species at eCO2 had higher leaf area-based photosynthetic rates and lower leaf stomatal conductance. Further, leaf mass-based photosynthetic rate was more enhanced in evergreen than in deciduous trees at eCO2. Biomass of evergreen and deciduous species was significantly higher at eCO2, with large species-specific variation among the evergreen species. Leaf-specific hydraulic conductivity was more enhanced in deciduous tree species than that of evergreen tree species with eCO2, which was mainly driven by the increase of biomass at eCO2. Interestingly, eCO2 significantly strengthened the coordination of stem hydraulic conductivity with leafgas exchange, leaf phosphorus concentration, and plant biomass across evergreen and deciduous species. These results highlighted greater enhancement of photosynthesis and greater species-specific variation in biomass at eCO2 for evergreen species compared to deciduous species, and stronger hydraulic-photosynthesis correlations at eCO2 than at aCO2 for tree species from subtropical forests. The present study provides important insights on the potential impacts of eCO2 on plant eco-physiology, growth and forest succession in a subtropical forest under global climate change. |
| 英文关键词 | Biomass allocation; CO 2 fertilization; Photosynthesis; Stem hydraulics; Subtropical forest |
| 语种 | 英语 |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| WOS类目 | Agronomy ; Forestry ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:001236297800001 |
| 来源期刊 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/300540 |
| 作者单位 | Chinese Academy of Sciences; Xishuangbanna Tropical Botanical Garden, CAS; Chinese Academy of Sciences; Xishuangbanna Tropical Botanical Garden, CAS; Anhui Normal University; Chinese Academy of Sciences; Shenyang Institute of Applied Ecology, CAS; University of Western Australia |
| 推荐引用方式 GB/T 7714 | . The impact of elevated CO 2 concentration on photosynthesis, growth and hydraulics of evergreen and deciduous tree seedlings from a subtropical forest in Southwest China[J],2024,352. |
| APA | (2024).The impact of elevated CO 2 concentration on photosynthesis, growth and hydraulics of evergreen and deciduous tree seedlings from a subtropical forest in Southwest China.AGRICULTURAL AND FOREST METEOROLOGY,352. |
| MLA | "The impact of elevated CO 2 concentration on photosynthesis, growth and hydraulics of evergreen and deciduous tree seedlings from a subtropical forest in Southwest China".AGRICULTURAL AND FOREST METEOROLOGY 352(2024). |
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