DOI: 10.1016/j.foreco.2016.11.007
Scopus记录号: 2-s2.0-84996992988
论文题名: Overlooking what is underground: Root:shoot ratios and coarse root allometric equations for tropical forests
作者: Waring B.G. ; Powers J.S.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 385 起始页码: 10
结束页码: 15
语种: 英语
英文关键词: Allometry
; Belowground
; Coarse roots
; Rooting depth
; Tropical forest
Scopus关键词: Biology
; Biomass
; C (programming language)
; Carbon
; Surveys
; Tropics
; Allometry
; Belowground
; Coarse roots
; Rooting depths
; Tropical forest
; Forestry
; allometry
; biomass allocation
; carbon sequestration
; phytomass
; precipitation (climatology)
; root system
; root-shoot ratio
; rooting
; soil type
; tropical forest
英文摘要: Coarse roots are a major belowground carbon (C) pool, yet we know little about the factors controlling coarse root distributions in tropical forests, the biome where belowground biomass stocks are largest. We conducted a literature survey to identify potential environmental controls on the root:shoot biomass ratio (R:S) across tropical forests worldwide. Moreover, to aid efforts to extrapolate aboveground biomass measurements to belowground C stocks, we also compiled a list of allometric equations for coarse root biomass. Across our large and geographically comprehensive dataset, we found that R:S is negatively correlated with mean annual precipitation, and positively linked with stand age. However, information on root biomass allocation is still scarce in comparison with the wealth of available data on aboveground plant biomass in tropical forests, and more data will be necessary to understand the drivers of belowground biomass allocation. Moreover, the available root allometric equations show tremendous variation in mathematical form, which is likely related to the many different methods that have been used to quantify root biomass and its distribution with depth. A better understanding of belowground dynamics in tropical forests will require systematic surveys of root biomass along gradients of soil type, climate, and stand age, along with a streamlined protocol for developing root allometric equations. © 2016 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64556
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Ecology, Evolution, and Behavior, University of Minnesota, St. Paul, MN, United States; Department of Plant Biology, University of Minnesota, St. Paul, MN, United States
Recommended Citation:
Waring B.G.,Powers J.S.. Overlooking what is underground: Root:shoot ratios and coarse root allometric equations for tropical forests[J]. Forest Ecology and Management,2017-01-01,385