摘要
为了解莲花山脉植被与土壤养分的海拔分布格局变化,以广东惠东莲花山白盆珠省级自然保护区200m~900m常绿阔叶混交林植物群落为研究对象,通过调查保护区内固定样地的植被多样性和测定土壤养分,探讨植物多样性、森林碳储量与土壤养分沿海拔梯度的分布规律。结果表明:(1)整体上森林乔木株数、增长率随海拔升高而明显增加;(2)植物物种丰富度、多样性、均匀度在200m~400m逐渐升高,400m~700m保持在较高水平并缓慢降低,在700m以上明显降低;(3)乔木单位碳储量呈“低—高—低”趋势,在海拔500m左右达到峰值,达143t/hm2,比2017年有明显提升;(4)莲花山白盆珠土壤呈酸性,有机质(SOM)、全氮(TN)、全磷(TP)、全钾(TK)、碱解氮(AN)、有效磷(AP)、速效钾(AK)含量随海拔升高波动增加。
In order to understand the changes of elevation distribution pattern of vegetation diversity in the north slope of Lianhua Mountains,the communities of evergreen broad-leaved mixed forest from 200m to 900m above sea level in Lianhuashan Baipenzhu Provincial Nature Reserve were studied.The distribution of plant diversity,forest carbon storage and soil nutrients along the altitude gradient were revealed by investigating the vegetation diversity and measuring soil nutrients in the permanent sample plot.The results show that:(1)On the whole,the number of trees and the growth rate increased significantly with the elevation.(2)The species richness,diversity and evenness of plant community gradually increased at 200m~400m,remained at a high level and then slowly decreased at 400m~700m,and significantly decreased above 700m.(3)Carbon storage per hectare of trees showed a"low-high-low"level,and reached a peak at about 500m above sea level,reaching 143 t/hm2,which was significantly higher than that in 2017.(4)The soil was acidic,and the contents of SOM,TN,TP,TK,AN,AP and AK increased with elevation.
作者
钟德君
李海滨
朱娘金
朱伟钦
黎桂星
吴林芳
黄晓晶
Zhong Dejun;Li Haibin;Zhu Niangjin;Zhu Weiqin;Li Guixing;Wu Linfang;Huang Xiaojing(Lianhuashan Baipenzhu Provincial Nature Reserve,Huizhou Guangdong 516338;Guangzhou Linfang Ecology Co.,Ltd.,Guangzhou Guangdong 510520)
出处
《热带林业》
2024年第1期23-27,共5页
Tropical Forestry
基金
广东惠东莲花山白盆珠自然保护区2023年省级生态林业建设专用资金项目(编号:4413007799609442303030745):固定监测样地复查与动态分析。
关键词
莲花山白盆珠自然保护区
植物多样性
碳储量
土壤养分
海拔梯度
Lianhuashan Baipenzhu nature reserve
Plant diversity
Carbon reserve
Soil nutrients
Aaltitudinal gradient
