CCPortal
DOI10.1016/j.foreco.2019.117740
Aboveground biomass dynamics and growth efficiency of Sequoia sempervirens forests
Sillett S.C.; Van Pelt R.; Carroll A.L.; Campbell-Spickler J.; Antoine M.E.
发表日期2020
ISSN0378-1127
卷号458
英文摘要The tallest species, Sequoia sempervirens, inhabits old-growth forests with global maximum biomass and leaf area. Here we determine if these forests also have maximum productivity. Intensive measurements of 114 trees 18–116 m tall and 115–2340 yr old were used to improve allometric equations for Sequoia. Applying the best available allometry to all vegetation in eleven 1-ha plots re-measured at 5-yr intervals yielded accurate estimates of aboveground biomass and growth increments. Plots initially held 1594–4341 Mg ha−1 of biomass (805–2201 Mg C ha−1), which increased by 14.7–40.7 Mg ha−1 yr−1, including input of dead biomass from outside plots. Live biomass increments ranged from 1.2 to 19.2 Mg ha−1 yr−1 and were dominated by heartwood accumulation in Sequoia (up to 15.6 Mg ha−1 yr−1). Exceptional old-growth Sequoia forests thus produce more aboveground biomass annually—and sequester more carbon in decay-resistant heartwood—than forests dominated by any other species. However, live biomass increments are considerably higher in an exceptional second-growth Sequoia forest and a fully stocked Sequoia plantation. Old-growth forest productivity falls short of the maximum, because growth efficiency declines with increasing tree size such that much of an old forest's photosynthetic capacity resides in crowns of very large trees producing considerably less aboveground biomass per unit leaf mass than small trees. Decreasing Sequoia growth efficiency is strongly related to heartwood proportions of biomass increments, which increase as trees enlarge with age. With increasing tree size, more productivity may also be directed to roots supporting clonal regeneration, explaining why small Sequoia produce several times more aboveground biomass per unit leaf mass than co-occurring species. Since decay-resistant heartwood promotes tree longevity and supports biodiversity, silviculture that includes indefinite retention of Sequoia trees can sustain high productivity while also improving both the carbon sequestration potential and conservation value of managed forests. © 2019 The Authors
英文关键词Biomass; Biomass increment; Branchfall; Growth efficiency; Heartwood; Leaf area index; Old-growth forest; Sequoia sempervirens; Tree mortality
语种英语
scopus关键词Biodiversity; Biomass; Carbon; Conservation; Efficiency; Plants (botany); Productivity; Reforestation; Wood products; Branchfall; Growth efficiency; Heartwood; Leaf Area Index; Old-growth forest; Sequoia sempervirens; Tree mortality; Ecology; aboveground biomass; allometry; carbon sequestration; conservation status; forest ecosystem; leaf area index; mortality; old-growth forest; woody plant; Biodiversity; Biomass; Carbon; Conservation; Efficiency; Productivity; Sequoia sempervirens
来源期刊Forest Ecology and Management
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/155567
作者单位Department of Forestry and Wildland Resources, Humboldt State University, Arcata, CA 95521, United States; School of Environmental and Forest Science, University of Washington, Seattle, WA 98195, United States
推荐引用方式
GB/T 7714
Sillett S.C.,Van Pelt R.,Carroll A.L.,et al. Aboveground biomass dynamics and growth efficiency of Sequoia sempervirens forests[J],2020,458.
APA Sillett S.C.,Van Pelt R.,Carroll A.L.,Campbell-Spickler J.,&Antoine M.E..(2020).Aboveground biomass dynamics and growth efficiency of Sequoia sempervirens forests.Forest Ecology and Management,458.
MLA Sillett S.C.,et al."Aboveground biomass dynamics and growth efficiency of Sequoia sempervirens forests".Forest Ecology and Management 458(2020).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Sillett S.C.]的文章
[Van Pelt R.]的文章
[Carroll A.L.]的文章
百度学术
百度学术中相似的文章
[Sillett S.C.]的文章
[Van Pelt R.]的文章
[Carroll A.L.]的文章
必应学术
必应学术中相似的文章
[Sillett S.C.]的文章
[Van Pelt R.]的文章
[Carroll A.L.]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。