DOI: 10.1016/j.foreco.2012.07.046
Scopus记录号: 2-s2.0-84877925855
论文题名: Carbon storage in a chronosequence of Chinese fir plantations in southern China
作者: Chen G.-S. ; Yang Z.-J. ; Gao R. ; Xie J.-S. ; Guo J.-F. ; Huang Z.-Q. ; Yang Y.-S.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 300 起始页码: 68
结束页码: 76
语种: 英语
英文关键词: Carbon sequestration
; Carbon stock
; Chinese fir
; Chronosequence
; Conversing natural forest to plantations
; Fine roots
Scopus关键词: Carbon sequestration
; Carbon stocks
; Chinese fir
; Chronosequences
; Fine roots
; Natural forests
; Biomass
; Carbon
; Lakes
; Soils
; Reforestation
; biogeochemistry
; broad-leaved forest
; carbon sequestration
; chronosequence
; coniferous forest
; evergreen forest
; fine root
; forest management
; land use change
; plantation forestry
; subsoil
; vertical distribution
; China
; Abies
; Cunninghamia lanceolata
英文摘要: Tree plantations established on the natural forest lands increasingly expand globally but their significance in sequestering atmospheric carbon (C) is rarely examined. We investigated changes of C stocks in Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) plantations converted from a natural broadleaved forest, based on a typical chronosequence in mountainland of subtropical China, which includes six first-generation Chinese fir stands at different development stages: 2- (recently regenerated), 7- (sapling), 16- (middle-aged), 21- (pre-mature), 40- (mature), and 88-year-old (over-mature), with a natural evergreen broadleaved forest (NF) as a comparison. The tree biomass C pool increased linearly from 2 to 40. years old, with no further significant increase from 40 to 88. years old. Compared with that in the NF forest, the mineral soil organic C (SOC) pool in Chinese fir plantation was decreased by 38.9% to a minimum at 16. years old. The soils reaccumulated C only between 16 and 21. years old, and then became neutral to C till to the over-mature stage, attaining an equilibrium SOC pool 30% lower than the pre-harvest level. The contribution of subsoil (below 20. cm depth) to total profile SOC loss ranged from 53.2% in the recently regenerated stand to 81.1% in the 16-year-old stand, emphasizing the importance of subsoil for the SOC balance. Both litterfall and fine-root biomass of Chinese fir trees exhibited a decreasing trend during late stand development, while the stand fine-root biomass remained relatively constant due to an increased contribution from understory vegetations. The stagnancy in stand fine-root biomass during late stand development might prevent the accruement of total profile SOC. However, the reduction of tree roots and the increase of understory roots did change the vertical distribution of soil C at the over-mature stage: the surface 0-20. cm soils accumulated C while the 20-40. cm soils lose C. It is concluded that over-mature tree plantations had a limited role in continuously sequestering C as old-growth unmanaged forests did, and that the SOC pools of tree plantations can be hardly recovered to those of natural forests due to a large initial loss and a low late gain in SOC following tree plantation establishment. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66603
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: College of Geographical Science, Fujian Normal University, Fuzhou 350007, China; Key Laboratory for Subtropical Mountain Ecology, Ministry of Science and Technology and Fujian Province Funded, Fuzhou 350007, China
Recommended Citation:
Chen G.-S.,Yang Z.-J.,Gao R.,et al. Carbon storage in a chronosequence of Chinese fir plantations in southern China[J]. Forest Ecology and Management,2013-01-01,300