DOI: 10.1016/j.foreco.2016.01.009
Scopus记录号: 2-s2.0-84954288638
论文题名: Factors influencing organic-horizon carbon pools in mixed-species stands of central Maine, USA
作者: Puhlick J.J. ; Fraver S. ; Fernandez I.J. ; Weiskittel A.R. ; Kenefic L.S. ; Kolka R.K. ; Gruselle M.-C.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 364 起始页码: 90
结束页码: 100
语种: 英语
英文关键词: Bryophytes
; Carbon storage
; Forest floor
; Forest soil
; Pedotransfer functions
; Silviculture
Scopus关键词: Debris
; Forestry
; Groundwater
; Hydraulic conductivity
; Organic carbon
; Plants (botany)
; Soils
; Bryophytes
; Carbon storage
; Forest floors
; Forest soils
; Pedo-transfer functions
; Silviculture
; C (programming language)
; bryophytes
; Coniferophyta
英文摘要: The overall goal of this study was to evaluate the correlation of multiple abiotic and biotic factors with organic-horizon (O-horizon) carbon (C) content on the Penobscot Experimental Forest in central Maine, USA. O-horizon samples were collected and their associated depths were recorded from stands managed with a range of silvicultural and harvesting treatments (i.e., selection, shelterwood, and commercial clearcut) and an unmanaged control. The overall mean for O-horizon C content from all samples was 25.6±16.1 Mg ha-1 (mean±SD). The samples were used to develop a pedotransfer function for predicting O-horizon C content from O-horizon depth (R2=0.47, RMSE=1.6 Mg ha-1) so that an average of O-horizon C content could be calculated for permanent sample plots on which abiotic and biotic factors were quantified. O-horizon depth measurements recorded along transects on permanent sample plots were used to calculate plot average O-horizon C content. There were no significant differences in average predicted O-horizon C content among selection, shelterwood, and commercial clearcut treatments. However, variation in predicted O-horizon C content between stands where the same treatment was applied was statistically significant and was likely due to the timing of harvests and abundance of dead wood buried within O horizons. Depth to redoximorphic features, cartographic depth to water table or saturated zone, drainage class, fine woody debris mass, downed woody debris volume, tree basal area, and the relative basal area of conifer species were not significant predictors of predicted O-horizon C content at the plot level. When the individual predicted values of O-horizon C content were modeled, within-plot variation accounted for 83.8% of the variance. Bryophyte mass, which was predicted from bryophyte cover, only explained 1.2% of the variation in O-horizon C content at the microsite level. These results highlight the sizeable variability in O-horizon C content within and among these mixed-species stands with various forest management and natural disturbance histories. © 2016 Elsevier B.V.. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65050
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: University of Maine, School of Forest Resources, 5755 Nutting Hall, Orono, ME, United States; USDA Forest Service, Northern Research Station, 686 Government Road, Bradley, ME, United States; USDA Forest Service, Northern Research Station, 1831 Hwy. 169 E., Grand Rapids, MN, United States
Recommended Citation:
Puhlick J.J.,Fraver S.,Fernandez I.J.,et al. Factors influencing organic-horizon carbon pools in mixed-species stands of central Maine, USA[J]. Forest Ecology and Management,2016-01-01,364