西南林业大学学报2023，Vol.43Issue(11)：97-106,10.DOI:10.11929/j.swfu.202209028
帽儿山天然软阔叶次生林林分结构动态变化
Dynamic Changes of Stand Structure of Natural Soft Broad Leaved Secondary Forest in Maoershan
摘要
Abstract
Taking natural soft broad leaved secondary forest in Maoershan as the object,we analyzed the data of 4 periods within 13 years and explored the dynamic change law of forest structure in Maoershan,which provides a theoretical basis for the scientific management of natural secondary forest.The results show that the diameter distributions from 2007 to 2020 are all approximate to the inverse J-shape,where the R2 of Weibull mod-el varied between 0.889 and 0.917;the R2 of the logistic distribution model from 2007 to 2020 ranged from 0.982 to 0.989;The diameter classes of the stands are even distribution,and the compositions of tree species are com-plex.In the non-spatial structure index,except for the increases of the stand density(24.18-26.54),the diversities of tree species(0.809-0.755),the stabilities of the stand(0.96-1.12)and the number and densities of trees are all decreased;The spatial structures did not change significantly during the 13 years.The horizontal distribution pat-tern(0.525-0.518)of the stand showed an aggregated distribution,the forest competition was in the middle(0.504-0.499),the overall mixing degree of the stand was moderate(0.615-0.640),the vertical complexity of the stand decreased(0.542-0.526),and the spatial comprehensive index of the stand changed stably.To sum up,the forest structures of Maoershan natural soft broad leaved secondary forest remain relatively stable and presents a positive succession trend.In the future,stand thinning should be done properly to expand growth space and im-prove habitat conditions.Precious tree species such as Pinus koraiensis should be properly replanted to increase economic value and improve stand pattern.关键词
软阔叶次生林/枯损模型/林分结构/变化规律Key words
natural soft broad leaved secondary forest/mortality model/stand structure/change law分类
农业科技引用本文复制引用
齐静,董灵波,刘兆刚..帽儿山天然软阔叶次生林林分结构动态变化[J].西南林业大学学报,2023,43(11):97-106,10.基金项目
国家自然科学基金项目(31700562)资助 （31700562）
黑龙江省头雁创新团队计划项目资助. （）
