How does thinning affect the photosynthetic parameters and their responses to environmental factors in a subtropical plantation?
文献类型：期刊论文
| 作者 | Xu, Mingjie1,5; Li, Shengtong5; Yang, Fengting1; Zhang, Tao5; Li, Qingkang1; Ma, Zeqing1; Zhu, Xianjin5; Fu, Xiaoli1; Dai, Xiaoqin1; Song, Jiaxin5 |
| 刊名 | FOREST ECOLOGY AND MANAGEMENT
 |
| 出版日期 | 2025-11-01 |
| 卷号 | 595页码:123022 |
| 关键词 | Photosynthesis Planted forest Eddy covariance Thinning NEE |
| ISSN号 | 0378-1127 |
| DOI | 10.1016/j.foreco.2025.123022 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | Thinning is an important and widely applied silviculture practice. In this study, its effects on photosynthetic light response (PLR) parameters and their responses to environmental factors were studied based on in situ eddy covariance observations. The results revealed that 25 % thinning in the originally dense subtropical forest improved the apparent quantum yield (alpha), except in July, when precipitation decreased sharply. Thinning promoted the maximum photosynthesis rate (Pmax) except in autumn. Daytime ecosystem respiration (Rd) increased throughout the year, as expected. The changing responses of the PLR parameters to air temperature (Ta) were embodied in the elevated optimum Ta for Pmax and the decreased optimum Ta for Rd, with slightly faster or slower decreases after the peak. However, after thinning, alpha decreased with Ta rather than following the pre-thinning increasing-peak-decreasing response pattern. These phenomena may be induced mainly by the increasing contribution of understory vegetation and light-sensitive newborn leaves to photosynthesis and the decomposition of thinning debris to respiration after thinning. The responses of the PLR parameters to water conditions were also explored in this study. The optimum vapor pressure deficit (VPD) for Pmax elevated, and the limiting effects of the soil water content (SWC) became relatively weak after thinning, indicating the mitigation of soil water competition by the removal of trees. These findings could reflect the internal changes in the ecosystem after thinning, which could help accurately predict the carbon sink capacity of planted forests and provide a foundation for the development of forest management policies. |
| URL标识 | 查看原文 |
| WOS关键词 | LIGHT-USE EFFICIENCY ; FOREST ECOSYSTEMS ; TEMPERATURE RESPONSES ; BIOCHEMICAL-MODEL ; CO2 EXCHANGE ; WATER FLUXES ; CARBON ; RESPIRATION ; CLIMATE ; PINE |
| WOS研究方向 | Forestry |
| 语种 | 英语 |
| WOS记录号 | WOS:001540492300002 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/215652]  |
| 专题 | 千烟洲站森林生态系统研究中心_外文论文 |
| 通讯作者 | Zhang, Tao; Wang, Huimin |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Natl Crit Zone Observ Red Soil Hilly Reg Qianyanzh, Beijing 100101, Peoples R China; 2.Nanning Normal Univ, Key Lab Environm Change & Resources Use Beibu Gulf, Minist Educ, Nanning 530001, Peoples R China; 3.Chinese Acad Sci, Inst Appl Ecol, CAS Key Lab Forest Ecol & Silviculture, Shenyang 110016, Peoples R China; 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 5.Shenyang Agr Univ, Coll Agron, Shenyang 110866, Peoples R China; 6.China Nonferrous Met Ind Technol Dev & Exchange Ct, Beijing 100814, Peoples R China 7.Henan Univ Econ & Law, Coll Resources & Environm, Zhengzhou 450046, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Xu, Mingjie,Li, Shengtong,Yang, Fengting,et al. How does thinning affect the photosynthetic parameters and their responses to environmental factors in a subtropical plantation?[J]. FOREST ECOLOGY AND MANAGEMENT,2025,595:123022. |
| APA | Xu, Mingjie.,Li, Shengtong.,Yang, Fengting.,Zhang, Tao.,Li, Qingkang.,...&Wang, Huimin.(2025).How does thinning affect the photosynthetic parameters and their responses to environmental factors in a subtropical plantation?.FOREST ECOLOGY AND MANAGEMENT,595,123022. |
| MLA | Xu, Mingjie,et al."How does thinning affect the photosynthetic parameters and their responses to environmental factors in a subtropical plantation?".FOREST ECOLOGY AND MANAGEMENT 595(2025):123022. |
入库方式： OAI收割
来源：地理科学与资源研究所
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