摘要
该研究以岛东林场45小班、47小班、62小班的木麻黄混交林为研究对象,对其林分结构和物种丰富度进行分析,研究结果如下:(1)45小班垂直结构主要分布在8m~12m的林层,水平结构上胸径主要分布在6cm~20cm;47和62小班垂直结构主要分布在8m~14m的林层,水平结构上胸径主要分布在10cm~22cm。(2)45小班林下草本植物共有10科13属13种,牛筋草、假臭草、越南叶下珠为林下草本植物的优势种;47小班和62小班林下草本植物共有10科14属15种,飞蓬、假臭草为优势种。(3)根据分布偏度,3个小班的大叶相思胸径大于峰值的株数占比较大,即大径阶的株数较多。
This study focuses on the mixed forests of Casuarina equisetifolia in classes 45,47,and 62 of Daodong Forest Farm,and analyzes their stand structure and species richness.The study’s findings are as follows:(1)Class 45’s vertical structure is primarily distributed between 8 and 12 meters of the forest layer and breast-height diameter is primarily distributed in the horizontal structure between 6 and 20 meters.The diameter at breast height is primarily spread in the horizontal structure of 10cm to 20cm,while the verticalstructure of Classes 47 and 62 is primarily distributed in forest layer of 8 m to 14 m.(2)The Class 45 understory contains a total of 10 families,13 genera,and 13 species of herbaceous plants,with Niujin Grass,Pseudostink Grass,and Vietnamese Phyllanthus as the dominant species.In the understory of Class 47 and 62,there are a total of 10 families,14 genera,and 15 species of herbaceous plants,with Feipeng Grass and Pseudostink Grass serving as the dominant species.(3)In the three classes of Acacia grandiflora,the proportion of trees with a diameter biggger than the peak is relatively high,meaning there are more trees with a diameter greater than the peak,according to the skewness of distribution.
作者
雷湘龄
薛杨
王小燕
林之盼
宿少锋
Lei Xiangling;Xue Yang;Wang Xiaoyan;Lin Zhipan;Su Shaofeng(Hainan Academy of Forestry(Hainan Academy of Mangrove),Haikou Hainan 571100;Hainan Wenchang Forest Ecosystem National Positioning Observation and Research Station,Wenchang Hainan 571300;Wenchang Forest Ecosystem Hainan Field Scientific Observation and Research Statio,Wenchang Hainan 571300)
出处
《热带林业》
2024年第1期12-18,共7页
Tropical Forestry
基金
海南省省属科研院所技术创新专项(KYYS-2021-24):热带滨海地区多功能森林作业法研究及应用。
关键词
岛东林场
林分结构
物种丰富度
Daodong Forest Farm
Stand structure
Species richness
