亚热带植物科学2024，Vol.53Issue(3)：227-233,7.DOI:10.3969/j.issn.1009-7791.2024.03.006
广东象头山国家级自然保护区森林碳密度变化
Dynamics of Forest Carbon Density in Xiangtoushan National Nature Reserve,Guangdong Province
摘要
Abstract
In order to study the dynamics of carbon density of typical forest communities in Xiangtoushan National Nature Reserve in Guangdong province(XTSNR),five 1-hm2 forest ecosystem monitoring plots were constructed according to the vegetation type and age of the forest in XTSNR.The second censuses of the plots were conducted 5 years after the construction of the plots to analyze the changes of individual species,important values and carbon density within the plots.The results showed that:(1)With the natural restoration of the XTSNR forest,the individual density of the five plots increased significantly,and the individual density of the XTS-D plot increased the most(2356 plants·hm-2),while that of the XTS-E plot of the coniferous and broad-leaved mixed forest increased the least(228 plants·hm-2).(2)Compared with the initial census,the carbon density of XTS-A,XTS-B,XTS-C and XTS-D plots all increased,and the newly added carbon storage of mature forest XTS-D plots was the highest,with an increase of 22.41％.The carbon density of XTS-E mixed forest decreased by 9.23％.(3)The DBH class structures were different among the five plots;the middle DBH class(Ⅳ and Ⅴ)contributed the most to the carbon storage of the mature forest XTS-A sample;large DBH class(Ⅸ)had the highest carbon storage in overmature forest XTS-B;the carbon storage of young and middle-aged trees(XTS-C and XTS-D)was mainly concentrated in trees of middle and small DBH classes(Ⅱ-Ⅳ).(5)The top 10 species of carbon density in the five plots were basically the same.Although Pinus massoniana in XTS-E plot was still a tree with high carbon density and important value,its individual number and important value decreased.Among the five plots,broad-leaved tree species showed the fastest increase in carbon density.关键词
森林碳密度/植物群落/重要值/象头山国家级自然保护区Key words
forest carbon density/plant community/important value/Xiangtoushan National Nature Reserve分类
生物学引用本文复制引用
康宁,张粤,陈羽,董晶丽,曾燕娜,张运玲,杨诗敏,梅启明..广东象头山国家级自然保护区森林碳密度变化[J].亚热带植物科学,2024,53(3):227-233,7.基金项目
全省野生动物救护、监测、疫源疫病预警体系建设(象头山分点)项目 （象头山分点）
