干旱区生态环境知识资源中心(Arid): Allometric Relationships for Predicting Aboveground Biomass and Sapwood Area of Oneseed Juniper (Juniperus monosperma) Trees

Arid

DOI	10.3389/fpls.2020.00094
	Allometric Relationships for Predicting Aboveground Biomass and Sapwood Area of Oneseed Juniper (Juniperus monosperma) Trees
	Cunliffe, Andrew M.1; McIntire, Cameron D.2; Boschetti, Fabio 1; Sauer, Katherine J.3; Litvak, Marcy 2; Anderson, Karen 4; Brazier, Richard E.1
通讯作者	Cunliffe, Andrew M.
来源期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
出版年	2020
卷号	11
英文摘要	Across the semiarid ecosystems of the southwestern USA, there has been widespread encroachment of woody shrubs and trees including Juniperus species into former grasslands. Quantifying vegetation biomass in such ecosystems is important because semiarid ecosystems are thought to play an important role in the global land carbon (C) sink, and changes in plant biomass also have implications for primary consumers and potential bioenergy feedstock. Oneseed juniper (Juniperus monosperma) is common in desert grasslands and pinyon-juniper rangelands across the intermountain region of southwestern North America; however, there is limited information about the aboveground biomass (AGB) and sapwood area (SWA) for this species, causing uncertainties in estimates of C stock and transpiration fluxes. In this study, we report on canopy area (CA), stem diameter, maximum height, and biomass measurements from J. monosperma trees sampled from central New Mexico. Dry biomass ranged between 0.4 kg and 625 kg, and cross-sectional SWA was measured on n = 200 stems using image analysis. We found a strong linear relationship between CA and AGB (r(2) = 0.96), with a similar slope to that observed in other juniper species, suggesting that this readily measured attribute is well suited for upscaling studies. There was a 9% bias between different approaches to measuring CA, indicating care should be taken to account for these differences to avoid systematic biases. We found equivalent stem diameter (ESD) was a strong predictor of biomass, but that existing allometric models underpredicted biomass in larger trees. We found SWA could be predicted from individual stem diameter with a power relationship, and that tree-level SWA should be estimated by summing the SWA predictions from individual stems rather than ESD. Our improved allometric models for J. monosperma support more accurate and robust measurements of C storage and transpiration fluxes in Juniperus-dominated ecosystems.
英文关键词	allometry sapwood area carbon stocks semiarid remote sensing woody plant encroachment bioenergy brush management
类型	Article
语种	英语
国家	England ; USA
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000524686500001
WOS关键词	WESTERN JUNIPER ; STAND TRANSPIRATION ; SEMIARID ECOSYSTEMS ; STEM DIAMETER ; LEAF-AREA ; SAP FLOW ; CARBON ; VEGETATION ; FOREST ; LANDSCAPE
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314558
作者单位	1.Univ Exeter, Dept Geog, Exeter, Devon, England; 2.Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA; 3.Ross State Univ, Dept Nat Resource Management, Alpine, TX USA; 4.Univ Exeter, Environm Sustainabil Inst, Penryn, England
推荐引用方式 GB/T 7714	Cunliffe, Andrew M.,McIntire, Cameron D.,Boschetti, Fabio,et al. Allometric Relationships for Predicting Aboveground Biomass and Sapwood Area of Oneseed Juniper (Juniperus monosperma) Trees[J],2020,11.
APA	Cunliffe, Andrew M..,McIntire, Cameron D..,Boschetti, Fabio.,Sauer, Katherine J..,Litvak, Marcy.,...&Brazier, Richard E..(2020).Allometric Relationships for Predicting Aboveground Biomass and Sapwood Area of Oneseed Juniper (Juniperus monosperma) Trees.FRONTIERS IN PLANT SCIENCE,11.
MLA	Cunliffe, Andrew M.,et al."Allometric Relationships for Predicting Aboveground Biomass and Sapwood Area of Oneseed Juniper (Juniperus monosperma) Trees".FRONTIERS IN PLANT SCIENCE 11(2020).