DOI: 10.1111/gcb.13717
论文题名: Pinus taeda forest growth predictions in the 21st century vary with site mean annual temperature and site quality
作者: Gonzalez-Benecke C.A. ; Teskey R.O. ; Dinon-Aldridge H. ; Martin T.A.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2017
语种: 英语
英文关键词: Aboveground biomass
; Forest productivity
; Global climate model
; Leaf area index
; Loblolly pine
; Net primary productivity
; Process model
; Representative concentration pathway
; Transpiration
英文摘要: Climate projections from 20 downscaled global climate models (GCMs) were used with the 3-PG model to predict the future productivity and water use of planted loblolly pine (Pinus taeda) growing across the southeastern United States. Predictions were made using Representative Concentration Pathways (RCP) 4.5 and 8.5. These represent scenarios in which total radiative forcing stabilizes before 2100 (RCP 4.5) or continues increasing throughout the century (RCP 8.5). Thirty-six sites evenly distributed across the native range of the species were used in the analysis. These sites represent a range in current mean annual temperature (14.9-21.6°C) and precipitation (1,120-1,680 mm/year). The site index of each site, which is a measure of growth potential, was varied to represent different levels of management. The 3-PG model predicted that aboveground biomass growth and net primary productivity will increase by 10%-40% in many parts of the region in the future. At cooler sites, the relative growth increase was greater than at warmer sites. By running the model with the baseline [CO2] or the anticipated elevated [CO2], the effect of CO2 on growth was separated from that of other climate factors. The growth increase at warmer sites was due almost entirely to elevated [CO2]. The growth increase at cooler sites was due to a combination of elevated [CO2] and increased air temperature. Low site index stands had a greater relative increase in growth under the climate change scenarios than those with a high site index. Water use increased in proportion to increases in leaf area and productivity but precipitation was still adequate, based on the downscaled GCM climate projections. We conclude that an increase in productivity can be expected for a large majority of the planted loblolly pine stands in the southeastern United States during this century. © 2017 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61095
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forest Engineering, Resources and Management College of Forestry Oregon State University Corvallis, OR USA; School of Forestry and Natural Resources University of Georgia Athens, GA USA; State Climate Office of North Carolina Raleigh, NC USA; School of Forest Resources and Conservation University of Florida Gainesville, FL USA
Recommended Citation:
Gonzalez-Benecke C.A.,Teskey R.O.,Dinon-Aldridge H.,et al. Pinus taeda forest growth predictions in the 21st century vary with site mean annual temperature and site quality[J]. Global Change Biology,2017-01-01