南京林业大学学报（自然科学版）2024，Vol.48Issue(1)：74-80,7.DOI:10.12302/j.issn.1000-2006.202302027
华东地区亚热带典型常绿阔叶林地上生物量与环境因子的关系
Relationship between aboveground biomass and environmental factors of subtropical typical evergreen broad-leaved forest in east China
摘要
Abstract
[Objective]Taking the Castanopsis spp.and Schima superba forests in subtropical typical evergreen broad-leaved forests in east China as the research subjects,the effects of environmental factors on aboveground biomass of the tree layer were studied.[Method]The aboveground biomass of the community was calculated based on the allometric growth equation of various plant species,and the Pearson correlation test was used to analyze the relationship between aboveground biomass and environmental factors in different types of evergreen broad-leaved forests.The mechanism of action between environmental factors and aboveground biomass was constructed by the partial least squares structural equation model(PLS-SEM),which was employed to analyze the relationship between multiple sets of variables.[Result](1)The aboveground biomass of subtropical typical evergreen broad-leaved forests in east China showed a extremely significant increasing trend with forest age.(2)The aboveground biomass of Castanopsis and S.superba natural forests positively correlated with soil pH in the study area,and for the S.superba natural forest,air temperature and total solar radiation intensity factors significantly affected the aboveground biomass.(3)In the structural equation model constructed using environmental factors and the aboveground biomass of Castanopsis natural forests,the direct effect coefficient of climate factors on aboveground biomass was significantly greater than that of soil factors.[Conclusion]The total solar radiation intensity,soil pH,and soil bulk density significantly affected the aboveground biomass of subtropical typical evergreen broad-leaved forests in east China.Among them,in the Castanopsis natural forest,aboveground biomass positively correlated with air the soil pH factor.In the S.superba natural forest,aboveground biomass negatively correlated with air temperature factor and total solar radiation intensity factor and positively correlated with soil pH factor.关键词
亚热带/常绿阔叶林/地上生物量/太阳辐射/土壤pH/土壤容重Key words
subtropical/evergreen broad-leaved forest/aboveground biomass/solar radiation intensity/soil pH/soil bulk分类
农业科技引用本文复制引用
董玉洁,毛岭峰,张敏,鲁旭东,吴秀萍..华东地区亚热带典型常绿阔叶林地上生物量与环境因子的关系[J].南京林业大学学报（自然科学版）,2024,48(1):74-80,7.基金项目
中国科学院战略性先导科技专项(XDB31000000). （XDB31000000）
