Subtropical Plant Science >

2024 , Vol. 53 >Issue 3: 227 - 233

DOI: https://doi.org/10.3969/j.issn.1009-7791.2024.03.006

Research articles

Dynamics of Forest Carbon Density in Xiangtoushan National Nature Reserve, Guangdong Province

  • 康 宁，张 粤，陈 羽，董晶丽，曾燕娜，张运玲，杨诗敏，梅启明
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  • (1. Guangdong Xiangtoushan National Nature Reserve Administration, Huizhou 516000, Guangdong China; 2. Guangzhou Linfang Ecological Technology Co., Ltd. Guangzhou 510520, Guangdong China)

Received date: 2024-04-14

  Accepted date: 2024-05-24

  Online published: 2024-08-23

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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.

Key words： forest carbon density; plant community; important value; Xiangtoushan National Nature Reserve

Cite this article

康 宁，张 粤，陈 羽，董晶丽，曾燕娜，张运玲，杨诗敏，梅启明 . Dynamics of Forest Carbon Density in Xiangtoushan National Nature Reserve, Guangdong Province[J]. Subtropical Plant Science, 2024 , 53(3) : 227 -233 . DOI: 10.3969/j.issn.1009-7791.2024.03.006

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