DOI: 10.1016/j.foreco.2015.01.031
Scopus记录号: 2-s2.0-84953345665
论文题名: Environmental and stand management influences on soil CO2 efflux across the range of loblolly pine
作者: Templeton B.S. ; Seiler J.R. ; Peterson J.A. ; Tyree M.C.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 355 起始页码: 15
结束页码: 23
语种: 英语
英文关键词: Carbon cycling
; Fertilization
; Management
; Soil CO2 efflux
; Soil heterotrophic respiration
; Thinning
Scopus关键词: Carbon
; Carbon dioxide
; Forestry
; Lakes
; Management
; Moisture
; Soil moisture
; Temperature
; Carbon cycling
; Fertilization
; Heterotrophic respiration
; Soil CO
; Thinning
; Soils
; Pinus taeda
英文摘要: Managed loblolly pine forests comprise an important pool in the global carbon cycle. Understanding the factors impacting fluxes from this pool, including the effects of management activities, will help provide more accurate and precise estimates of carbon pools and allow landowners and policy makers to better manage loblolly pine stands for carbon sequestration. Specific to this study, we sought to create regional models for soil CO2 efflux (Rs) using data collected from 154 plots across 11 states representing the managed range of loblolly pine in the southeastern United States. We also examined an index of heterotrophic respiration (Rh) using root free soil incubations. Additionally, these data were examined to determine the effects of fertilization and thinning on Rs and Rh index. The Rs model (R2=0.56) included soil temperature, latitude, a soil moisture by soil temperature effect, soil nitrogen, and bulk density variables. The Rh index (R2=0.45) model included soil moisture, temperature, percent coarse fragments, and elevation. Rs was not significantly affected by either fertilization or thinning, yet Rh index was influenced by both (negatively and positively, respectively). This indicates a shift in relative contributions of heterotrophic respiration and root respiration components to Rs in response to these treatments. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65667
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forest Resources and Environmental Conservation (0324), Virginia Tech, 228 Cheatham Hall, 310 West Campus Dr., Blacksburg, VA, United States; Department of Biology, Indiana University of Pennsylvania, Indiana, PA, United States; Virginia Department of Agriculture and Consumer Services, Office of Plant Industry Services, 250 Cassell Road, Wytheville, VA, United States
Recommended Citation:
Templeton B.S.,Seiler J.R.,Peterson J.A.,et al. Environmental and stand management influences on soil CO2 efflux across the range of loblolly pine[J]. Forest Ecology and Management,2015-01-01,355