文献类型：期刊文献

英文题名：Thinning improves timber yield and structure in Pinus Massoniana plantations: a 35-year experiment

作者：Chen, Honghui[1,2] Chai, Zongzheng[3] An, Ning[2] Ding, Guijie[1,4]

第一作者：Chen, Honghui;谌红辉

通信作者：Ding, GJ[1]

机构：[1]Guizhou Univ, Inst Resources & Environm Guizhou, Guiyang 550025, Guizhou, Peoples R China;[2]Chinese Acad Forestry, Expt Ctr Trop Forestry, Pingxiang 532600, Guangxi, Peoples R China;[3]Guizhou Univ, Coll Forestry, Guiyang 550025, Guizhou, Peoples R China;[4]Guizhou Key Lab Forest Cultivat Plateau Mt, Guiyang 550025, Guizhou, Peoples R China

年份：2026

卷号：23

外文期刊名：TREES FORESTS AND PEOPLE

收录：Scopus(收录号：2-s2.0-105027766911);WOS:【ESCI(收录号:WOS:001674201000001)】；

基金：This work was supported by National Natural Science Foundation of China (32560347 and 32001314) , Guizhou Provincial Science and Technology Plan Project (Qiankehe Jichu-ZK [2022] 101) , Guizhou Provincial Major Science and Technology Special Project (Qiankehe Zhongda Zhuanxiangzi [2024] 010) , and Guizhou Provincial Key Labo-ratory of Plateau Mountain Tree Breeding (Qiankehe Pingtai Rencai [2025] 025) .

语种：英文

外文关键词：Thinning; Pinus massoniana; Plantation; Timber yield; Timber quality; Long-term experiment

摘要：Thinning is a widely applied silvicultural practice in plantation forests, but its long-term effects on timber yield, quality, and stand development remain poorly documented, especially in subtropical conifer systems. A 35-year field experiment was conducted in Pinus massoniana plantations in southern China to evaluate how thinning regimes influence tree growth and timber structure over time. Seven treatments were applied, including early and delayed thinning at varying intensities, alongside an unthinned control. Growth and yield were assessed through repeated measurements of individual tree size, stand density, and timber volume across size classes. Results showed that thinning significantly improved individual tree diameter and volume compared to controls. Early-Intensive (i.e., early intensive thinning) and Early-Moderate & Late-Light (i.e., early moderate thinning followed by late light thinning) treatments consistently outperformed others, especially in promoting largediameter timber, a high-value category in regional markets. A composite index integrating total stand volume, merchantable timber output, and large-diameter recovery confirmed these treatments as optimal. These findings provide long-term empirical evidence that appropriate thinning strategies can enhance both timber yield and quality in P. massoniana plantations. The results serve as a practical reference for forest managers seeking to improve stand structure and economic return, and underscore the importance of tailoring thinning intensity and timing to long-term silvicultural objectives.