Carbon dynamics in three subtropical forest ecosystems in China

被引:0
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作者
Zhongrui Zhang
Quanlin Zhong
Dongliang Cheng
Zhiqun Huang
Chaobin Xu
Hua Yu
Shihong Xiao
机构
[1] Fujian Normal University,Fujian Provincial Key Laboratory of Plant Ecophysiology
[2] Guangdong Academy of Forestry,Guangdong Provincial Key Laboratory of Bio
[3] Ministry of Education,Control for the Forest Disease and Pest
[4] Fujian Agriculture and forestry University,Key Laboratory of Humid Subtropical Eco
来源
Environmental Science and Pollution Research | 2020年 / 27卷
关键词
Carbon sequestration; Subtropical forest; Carbon content; Forest ecosystem types;
D O I
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中图分类号
学科分类号
摘要
The carbon sequestration capacity of the forest ecosystem normally increases overage due to the carbon dynamic in below canopy and soil. The carbon dynamic is reflective of the forest characteristics and their interactions with climate, topographic, and soil conditions. In this study, we measured the carbon content and carbon density of canopy, shrub, understory vegetation, litter, and soil, and assessed carbon dynamics in three forest ecosystems (Cunninghamia lanceolate, Pinus massoniana, and Evergreen broad-leaved forests) with a combination of data from Fujian Provincial forest resource inventory. This study showed that the carbon content of the canopy layers increased over time, and the carbon content of the topsoil (0–30 cm) in the young forests was significantly higher than that in other age groups in Cunninghamia lanceolata forest and Pinus massoniana forest. Due to the carbon differences in the soil layer, the carbon stocks of the C. lanceolata forest and the P. massoniana forest declined from 1996 to 2007, but the carbon stocks of Evergreen broad-leaved forest increased. Besides, using the traditional carbon content coefficient (0.5) might underestimate the carbon sequestration potential of these forest ecosystems, especially for the mature forests. The coniferous forests displayed a short-term reduction in the carbon stocks of ecosystems between 10 and 20 years after afforestation, and the decline cannot be ignored in the carbon budget.
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页码:15552 / 15564
页数:12
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