DOI: 10.1016/j.foreco.2016.12.022
Scopus记录号: 2-s2.0-85008599143
论文题名: Forest composition and growth in a freshwater forested wetland community across a salinity gradient in South Carolina, USA
作者: Liu X. ; Conner W.H. ; Song B. ; Jayakaran A.D.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 389 起始页码: 211
结束页码: 219
语种: 英语
英文关键词: Aboveground net primary productivity
; Basal area
; Litterfall
; Overstory and understory composition
; Tidal freshwater forested wetlands
Scopus关键词: Ecosystems
; Photosynthesis
; Phytoplankton
; Reforestation
; Salt water intrusion
; Sea level
; Water
; Wetlands
; Aboveground net primary productivity
; Basal area
; Forested wetlands
; Litterfalls
; Understory composition
; Forestry
; Fragaria x ananassa
; Taxodium distichum
英文摘要: Tidal freshwater forested wetlands (TFFW) of the southeastern United States are experiencing increased saltwater intrusion mainly due to sea-level rise. Inter-annual and intra-annual variability in forest productivity along a salinity gradient was studied on established sites. Aboveground net primary productivity (ANPP) of trees was monitored from 2013 to 2015 on three sites within a baldcypress (Taxodium distichum) swamp forest ecosystem in Strawberry Swamp on Hobcaw Barony, Georgetown County, South Carolina. Paired plots (20 × 25-m) were established along a water salinity gradient (0.8, 2.6, 4.6 PSU). Salinity was continuously monitored, litterfall was measured monthly, and growth of overstory trees ⩾10 cm diameter at breast height (DBH) was monitored on an annual basis. Annual litterfall and stem wood growth were summed to estimate ANPP. The DBH of live and dead individuals of understory shrubs were measured to calculate density, basal area (BA), and important values (IV). Freshwater forest communities clearly differed in composition, structure, tree size, BA, and productivity across the salinity gradient. The higher salinity plots had decreased numbers of tree species, density, and BA. Higher salinity reduced average ANPP. The dominant tree species and their relative densities did not change along the salinity gradient, but the dominance of the primary tree species differed with increasing salinity. Baldcypress was the predominant tree species with highest density, DBH, BA, IV, and contribution to total ANPP on all sites. Mean growth rate of baldcypress trees decreased with increasing salinity, but exhibited the greatest growth among all tree species. While the overall number of shrub species decreased with increasing salinity, wax myrtle (Morella cerifera) density, DBH, BA, and IV increased with salinity. With rising sea level and increasing salinity levels, low regeneration of baldcypress, and the invasion of wax myrtle, typical successional patterns in TFFW and forest health are likely to change in the future. © 2016 Elsevier B.V.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64478
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Key Lab of Silviculture, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, Anhui, China; Baruch Institute of Coastal Ecology and Forest Science, Clemson University, Georgetown, SC, United States; College of Agricultural, Natural Resource Sciences, Washington State University, Puyallup, WA, United States
Recommended Citation:
Liu X.,Conner W.H.,Song B.,et al. Forest composition and growth in a freshwater forested wetland community across a salinity gradient in South Carolina, USA[J]. Forest Ecology and Management,2017-01-01,389