文献类型：期刊文献

英文题名：How do stand attributes, climatic conditions, and soil depth jointly drive annual aboveground biomass increment in subtropical evergreen broadleaved secondary forests of China?

作者：Zou, Kailun[1] Liu, Xianzhao[2] Gao, Lushuang[1] Yang, Lu[2] Qin, Jianghuan[2] Xu, Qigang[3] He, Peng[4]

第一作者：Zou, Kailun

通信作者：Gao, LS[1];Liu, XZ[2]

机构：[1]Beijing Forestry Univ, Key Lab Forest Resources & Environm Management, State Forestry & Grassland Adm, Beijing 100083, Peoples R China;[2]Chinese Acad Forestry, State Key Lab Efficient Prod Forest Resources, Key Lab Forest Management & Growth Modelling, Inst Forest Resource Informat Tech,Natl State, Beijing 100091, Peoples R China;[3]East China Acad Inventory & Planning NFGA, Hangzhou 311500, Peoples R China;[4]Cent South Acad Inventory & Planning NFGA, Changsha 410018, Hunan, Peoples R China

年份：2026

卷号：607

外文期刊名：FOREST ECOLOGY AND MANAGEMENT

收录：;EI(收录号：20260620043156);WOS:【SCI-EXPANDED(收录号:WOS:001687390400001)】；

基金：This work was sponsored by the National Key Research and Devel-opment plan (2022YFD2200504) and the National Natural Science Foundation of China (32271878) .

语种：英文

外文关键词：Successional status; Tree species diversity; Stand density; Diameter structure; Environment variable

摘要：Although subtropical evergreen broadleaved secondary forests have great growth potential, the natural mechanisms regulating aboveground biomass accumulation remain unclear. Using 283 permanent plots in typical subtropical regions of China, this study quantified the combined effects of stand attributes, climatic conditions, and soil depth on annual aboveground biomass increment (AGBI) through linear regression, grouping comparison, random forest modeling with the SHAP-GAM interpretation framework, and interaction analysis. Results showed that successional stage was the primary determinant of AGBI, while tree species diversity had a weaker, though positive, effect. Stand density exhibited a threshold-dependent effect, and excessive diameter structure heterogeneity suppressed aboveground biomass accumulation, indicating that moderate structural differentiation optimizes growth. Among climatic variables, mean coldest month temperature (MCMT) had the strongest positive effect, followed by mean annual precipitation (MAP) and mean warmest month temperature (MWMT). Interaction analyses revealed that later-successional, higher-diversity, moderately dense, and structurally balanced stands exhibited greater climate responsiveness and resilience. AGBI also increased with soil depth. These findings highlight the importance of successional progression, diversity, structural optimization, climatic, and edaphic conditions in regulating AGBI, providing guidance for the sustainable management and carbon sequestration assessment of subtropical secondary forests.