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Thinning altered the optimum photosynthetic environment in a subtropical coniferous plantation

文献类型：期刊论文

作者Li, Shengtong3; Xu, Mingjie3,4; Yang, Fengting4; Song, Jiaxin3; Shi, Xinyi3; Wang, Ziyi3; Wang, Huimin1,4; Zhu, Xianjin3; Cheng, Chuanpeng5; Wang, Jianlei2
刊名SCIENTIFIC REPORTS
出版日期2026-01-08
卷号16期号:1页码:4867
关键词Thinning Forest GPP Optimum environment Eddy covariance
ISSN号2045-2322
DOI10.1038/s41598-026-35052-0
产权排序2
文献子类Article
英文摘要Thinning offers long-term benefits for planted forests and is an important silvicultural practice. Meanwhile, ecosystem would respond to thinning and the optimal photosynthetic environment would change. Clarifying and quantifying the changing optimal photosynthetic environment induced by thinning is important for accurate prediction of carbon budgets and effective management of artificial forests. Based on six-year continuous in situ observations of carbon fluxes and corresponding environmental factors before and after 25% thinning in a typical subtropical plantation in China, this study revealed that thinning increased the optimum values of key environmental factors (net radiation (Rn), air temperature (Ta), and vapor pressure deficit (VPD)) for gross primary productivity (GPP). Meanwhile, thinning enhanced the ecosystem maximum GPP (GPPmax) corresponding to each single optimum environmental factor. Among them, the highest GPPmax, reaching 0.91 mg CO2 m- 2 s- 1, was found when Rn reached the optimum value and was 13% higher than that before thinning. In addition, the optimum photosynthetic environment configurations (the combination of multiple environmental factors) that could occur in the real world were detected and quantified. Before thinning, the optimal environment configuration was Rn = 692.85 J m- 2 s- 1, Ta = 23.43 degrees C, VPD = 0.96 kPa and SWC = 0.20 m3 m- 3, with a GPPmax of 0.98 mg CO2 m- 2 s- 1. After thinning, the GPPmax increased to 1.11 mg CO2 m- 2 s- 1, and the corresponding optimal photosynthetic environment configuration was Rn = 693.92 J m- 2 s- 1, Ta = 26.70 degrees C, VPD = 1.10 kPa and SWC = 0.21 m3 m- 3. All the values increased after thinning compared with those before thinning, and the changes in the optimal photosynthetic environment might be an important reason for the enhanced photosynthetic capacity of the thinned forests. These results indicated the positive responses of forest to proper thinning and could provide references for the development of forest management policies.
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WOS关键词GROSS PRIMARY PRODUCTIVITY ; NET ECOSYSTEM EXCHANGE ; SEASONAL-VARIATIONS ; USE EFFICIENCY ; RESPONSES ; WATER ; FOREST ; LIGHT ; MICROCLIMATE ; INTERCEPTION
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:001681630400001
出版者NATURE PORTFOLIO
源URL[http://ir.igsnrr.ac.cn/handle/311030/221048]  
专题千烟洲站森林生态系统研究中心_外文论文
通讯作者Xu, Mingjie; Wang, Huimin; Zhang, Tao
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
2.China Nonferrous Met Ind Technol Dev & Exchange Ct, Beijing 100814, Peoples R China
3.Shenyang Agr Univ, Coll Agron, Shenyang 110866, Peoples R China;
4.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;
5.Henan Univ Econ & Law, Coll Resources & Environm, Zhengzhou 450046, Peoples R China;
推荐引用方式
GB/T 7714		 Li, Shengtong,Xu, Mingjie,Yang, Fengting,et al. Thinning altered the optimum photosynthetic environment in a subtropical coniferous plantation[J]. SCIENTIFIC REPORTS,2026,16(1):4867.
APA Li, Shengtong.,Xu, Mingjie.,Yang, Fengting.,Song, Jiaxin.,Shi, Xinyi.,...&Zhang, Tao.(2026).Thinning altered the optimum photosynthetic environment in a subtropical coniferous plantation.SCIENTIFIC REPORTS,16(1),4867.
MLA Li, Shengtong,et al."Thinning altered the optimum photosynthetic environment in a subtropical coniferous plantation".SCIENTIFIC REPORTS 16.1(2026):4867.

入库方式： OAI收割

来源：地理科学与资源研究所

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