文献类型：期刊文献

中文题名：间伐强度对萌芽杉木-木荷混交林空间结构的影响

英文题名：Effect of Thinning Intensity on the Binary Distribution Characteristics of Spatial Structure of Chinese Fir and Broadleaf Mixed Forest

作者：张利利[1] 谭新建[1] 姚甲宝[1] 李翱翔[1] 葛晓宁[1]

第一作者：张利利

机构：[1]中国林业科学研究院亚热带林业实验中心,江西分宜336600

年份：2022

卷号：50

期号：1

起止页码：1-6

中文期刊名：东北林业大学学报

外文期刊名：Journal of Northeast Forestry University

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD_E2021_2022】；

基金：“十三五”国家重点研发计划子课题(2017YFD0600905-3);中央级公益性科研院所基本科研业务费专项资金(CAFYBB2020MB005)。

语种：中文

中文关键词：间伐强度;混交林;空间结构;二元分布

外文关键词：Thinning intensity;Mixed forest;Spatial structure;Binary distribution

分类号：S757.4

摘要：为了解萌芽杉木-木荷混交林空间结构的变化特征,以江西分宜亚林中心的萌芽杉木-木荷混交林为研究对象,通过建立空间结构参数的二元分布,对不同间伐强度的林分空间结构变化特征进行描述。结果表明:间伐前,林分为随机分布且胸径处于劣势状态;弱度间伐后,林分随机分布的林木处于中高度混交的比例上升,中低度混交林的胸径或树高劣势木的比例显著下降;中度间伐后,中低度混交的林木中,中庸木比例上升显著,随机分布格局的林木处于高度混交的比例明显增加;强度间伐后,林木大多数处于中低度混交且优势的状态,样地中不存在团状分布的林木,林木竞争两极分化明显,不利于林分结构稳定发展。不同间伐强度下,胸径与树高优势程度相当的林木比例均超过50%。中度间伐后,林分的混交度、优势度及分布格局比其他间伐强度更为合理。
In order to understand the change characteristics of spatial structure of budding Cunninghamia lanceolata-Schima superba mixed forest,taking the budding C.lanceolata-S.superba mixed forest in the Experimental Center of Subtropical Forestry of Fenyi County,Jiangxi Province as the research object,by establishing the binary distribution of spatial structure parameters,we described the change characteristics of stand spatial structure with different thinning intensity.Before thinning,the forest stand was randomly distributed and the DBH was in an inferior state;after weak thinning,the proportion of randomly distributed trees in moderate and highly mixed forest increased,while the proportion of DBH or height inferior trees in moderate-low mixed forest decreased significantly;after moderate thinning,the proportion of medium advantage trees in moderate-low mixed trees increased significantly,and the proportion of trees with random distribution pattern in high mixing increased significantly.After intensity thinning,most of the trees are in the state of moderate-low degree mixing and dominance,there is no cluster distribution of trees in the sample plot,and the forest competition polarization is obvious,which is not conducive to the stable development of the stand structure.Under different thinning intensity,the proportion of trees with the same dominant degree of DBH and height was more than 50%.After moderate thinning,the mixing degree,dominance and distribution pattern of the stand were more reasonable than those of other thinning intensity.