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Allocation pattern and accumulation potential of carbon stock in natural spruce forests in northwest China
Yue, Jun-Wei1,2,3; Guan, Jin-Hong2; Deng, Lei4; Zhang, Jian-Guo5; Li, Guoqing1,2; Du, Sheng1,2
2018-05-25
Source PublicationPEERJ
ISSN2167-8359
Volume6Pages:21
Corresponding AuthorDu, Sheng(shengdu@ms.iswc.ac.cn)
AbstractBackground: The spruce forests are dominant communities in northwest China, and play a key role in national carbon budgets. However, the patterns of carbon stock distribution and accumulation potential across stand ages are poorly documented. Methods: We investigated the carbon stocks in biomass and soil in the natural spruce forests in the region by surveys on 39 plots. Biomass of tree components were estimated using allometric equations previously established based on tree height and diameter at breast height, while biomass in understory (shrub and herb) and forest floor were determined by total harvesting method. Fine root biomass was estimated by soil coring, technique. Carbon stocks in various biomass components and soil (0-100 cm) were estimated by analyzing the carbon content of each component. Results: The results showed that carbon stock in these forest ecosystems can be as high as 510.1 t ha(-1), with an average of 449.4 t ha(-1). Carbon stock ranged from 28,1 to 93.9 t ha(-1) and from 0.61 to 8.7 t ha(-1) with stand ages in trees and deadwoods respectively. The proportion of shrubs, herbs, fine roots, litter and deadwoods ranged from 0.1% to 1% of the total ecosystem carbon, and was age-independent. Fine roots and deadwood which contribute to about 2% of the biomass carbon should be attached considerable weight in the investigation of natural forests. Soil carbon stock did not show a changing trend with stand age, ranging from 254.2 to 420.0 t ha(-1) with an average of 358.7 t ha(-1). The average value of carbo sequestration potential for these forests was estimated as 29.4 t ha(-1), with the lower aged ones being the dominant contributor. The maximum carbon sequestration rate was 2.47 t ha(-1) year(-1) appearing in the growth stage of 37-56 years. Conclusion: The carbon stock in biomass was the major contributor to the increment of carbon stock in ecosystems. Stand age is not a good predictor of soil carbon stocks and accurate evaluation of the soil carbon dynamics thus requires long-term monitoring in situ. The results not only revealed carbon stock status and dynamics in these natural forests but were helpful to understand the role of Natural Forest Protection project in forest carbon sequestration as well.
KeywordSpruce forests Stand age Carbon stock Carbon sequestration potential
DOI10.7717/peerj.4859
WOS KeywordSOIL ORGANIC-CARBON ; FINE-ROOT DYNAMICS ; SCOTS PINE STANDS ; PROTECTION PROGRAM ; TROPICAL FORESTS ; UNDERSTOREY VEGETATION ; ELEVATION GRADIENT ; QILIAN MOUNTAINS ; TIBETAN PLATEAU ; BOREAL FOREST
Indexed BySCI
Language英语
Funding ProjectChinese Academy of Sciences[XDA05050202]
Funding OrganizationChinese Academy of Sciences
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000434232300011
PublisherPEERJ INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54711
Collection中国科学院地理科学与资源研究所
Corresponding AuthorDu, Sheng
Affiliation1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China
2.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Qinghai Univ, Acad Agr & Forestry Sci, Xining, Qinghai, Peoples R China
5.Minist Water Resources, Yellow River Conservancy Commiss, Upper & Middle Yellow River Bur, Xian, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Yue, Jun-Wei,Guan, Jin-Hong,Deng, Lei,et al. Allocation pattern and accumulation potential of carbon stock in natural spruce forests in northwest China[J]. PEERJ,2018,6:21.
APA Yue, Jun-Wei,Guan, Jin-Hong,Deng, Lei,Zhang, Jian-Guo,Li, Guoqing,&Du, Sheng.(2018).Allocation pattern and accumulation potential of carbon stock in natural spruce forests in northwest China.PEERJ,6,21.
MLA Yue, Jun-Wei,et al."Allocation pattern and accumulation potential of carbon stock in natural spruce forests in northwest China".PEERJ 6(2018):21.
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