DOI: 10.1016/j.foreco.2014.06.015
Scopus记录号: 2-s2.0-84904038466
论文题名: Climate-growth relationships for yellow-poplar across structural and site quality gradients in the southern Appalachian Mountains
作者: Keyser T.L. ; Brown P.M.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 329 起始页码: 158
结束页码: 165
语种: 英语
英文关键词: Basal area increment
; Dendroecology
; Forest thinning
; Liriodendron tulipifera
; Palmer drought severity index
Scopus关键词: Climate change
; Drought
; Productivity
; Basal area increment
; Dendroecology
; Forest thinnings
; Liriodendron tulipifera
; Palmer drought severity indices
; Forestry
; basal area
; biological production
; climate change
; climate effect
; deciduous tree
; dendroecology
; drought stress
; forest inventory
; growth response
; index method
; stand structure
; thinning
; Drought
; Forestry
; Productivity
; Appalachians
; United States
英文摘要: Forecasted changes in climate across the southeastern US include an increase in temperature along with more variable precipitation patterns, including an increase in the severity and frequency of drought events. As such, the management of forests for increased resistance or resilience to the direct and indirect effects of climate change, including decreased tree- and stand-level productivity, is of interest to natural resource practitioners. Because the sensitivity of tree growth to climate can be moderated by competition, manipulating stand density through silvicultural activities may mitigate the negative effects climate change may have on tree growth and productivity. In this paper, we utilized dendrochronology data, along with long-term forest inventory data, from 134 plots established and subsequently thinned between 1960 and 1963 to analyze the effects of climate on annual tree growth for yellow-poplar (Liriodendron tulipifera L.) across a broad stand structural and site productivity gradient in the southern Appalachian Mountains. Annual basal area increment (BAI) was most related to the Palmer Drought Severity Index (PDSI) during the months of May, June, and July (PDSIMJJ) relative to that of the annual or growing season when structural and site productivity variables were included in the analysis. Annual BAI of trees growing in stands of lower density responded to increases in PDSIMJJ at a faster rate than trees growing in stands of greater density. Conversely, those same trees experienced proportionally greater decreases in BAI at lower values of PDSIMJJ compared to trees in stands of greater density. Annual BAI was positivity related to site productivity, as quantified by site index, with BAI more sensitive to changes in PDSIMJJ on plots of progressively higher site index. Results suggest stand structure as well as measures of productivity should be considered when quantifying climate-growth relationships for forest tree species. Such information could not only aid in the identification of stands most susceptible to reduced growth, but also be used to develop site- or stand-specific silvicultural prescriptions focused on promoting resilience or resistance under a changing climate. © 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65795
Appears in Collections: 影响、适应和脆弱性
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作者单位: USDA Forest Service, Southern Research Station, Bent Creek Experimental Forest, 1577 Brevard Rd., Asheville, NC 28806, United States; Rocky Mountain Tree Ring Research, Inc., 2901 Moore Ln., Fort Collins, CO 80526, United States
Recommended Citation:
Keyser T.L.,Brown P.M.. Climate-growth relationships for yellow-poplar across structural and site quality gradients in the southern Appalachian Mountains[J]. Forest Ecology and Management,2014-01-01,329