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Conifer and broadleaved trees differ in branch allometry but maintain similar functional balances
Zhang, Lan1; Chen, Yajun2,3; Hao, Guangyou4; Ma, Keping1; Bongers, Frans; Sterck, Frank
Source PublicationTREE PHYSIOLOGY
AbstractConifers and broadleaved trees coexist in temperate forests and are expected to differ in partitioning strategies between leaf and stem. We compare functional balances between water loss and water supply, and between sugar production and sugar transport/storage, and associate these with xylem growth to better understand how they contribute to these life form strategies. We sampled canopy branches from 14 common species in a temperate forest in northeast China and measured xylem area, phloem area, ray area, ray percentage, dry wood density, xylem conductivity and mean xylem growth rate for branch stems, and the leaf area and specific leaf area for leaves, and calculated the leaf-specific conductivity. Conifers and broadleaved trees did not differ significantly in tissue areas, xylem growth rate and the relation between phloem area and leaf area. Conifers had higher xylem area but lower ray area relative to leaf area. For the same xylem conductivity, phloem area and ray parenchyma area did not differ between conifers and broadleaved trees. Xylem growth rate was similar relative to leaf area and phloem area. Our results indicate that conifers tend to develop more xylem area per leaf area and more tracheid area at the cost of ray parenchyma area, probably to compensate for the low water transport ability of tracheid-based xylem. The divergent strategies between conifers and broadleaved tree species in leaf area and xylem area partitioning probably lead to the convergence of partitioning between leaf area and phloem area. Consequently, conifers tend to consume rather than store carbon to achieve a similar xylem expansion per year as coexisting broadleaved trees.
Keywordallometry canopy functional balance wood anatomy xylem growth
Subject AreaForestry
Indexed BySCI
WOS Research AreaForestry
WOS IDWOS:000537443000008
Publication PlaceOXFORD
Funding OrganizationStichting Het Kronendak Canopy Grant [16-007] ; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) Chinese Exchange Program [530-5CDP20] ; Stichting Fonds Landbouw Export Bureau [1916/1918, 2017-003C] ; KNAW Fonds Ecologie [Eco/1747] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41861144016, 31570406, 31722013] ; Youth Innovation Promotion Association [2016351] ; 'Light of West China' Program of CAS, CAS 135 program [2017XTBG-T01, 2017XTBG-F01] ; Yunnan Provincial Science and Technology Department [2018HB068]
Corresponding Author Emailchenyj@xtbg.org.cn ; kpma@ibcas.ac.cn
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Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Wageningen Univ & Res Ctr, Forest Ecol & Forest Management Grp, POB 47, NL-6700 AA Wageningen, Netherlands
2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, 20 Nanxincun, Beijing 100093, Peoples R China
3.Chinese Acad Sci, CAS Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China
4.Chinese Acad Sci, Yuanjiang Savanna Ecosyst Res Stn, Xishuangbanna Trop Bot Garden, Yuanjian 666303, Yunnan, Peoples R China
5.Chinese Acad Sci, Inst Appl Ecol, CAS Key Lab Forest Ecol & Management, Shenyang 110016, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Lan,Chen, Yajun,Hao, Guangyou,et al. Conifer and broadleaved trees differ in branch allometry but maintain similar functional balances[J]. TREE PHYSIOLOGY,2020,40(4):511-519.
APA Zhang, Lan,Chen, Yajun,Hao, Guangyou,Ma, Keping,Bongers, Frans,&Sterck, Frank.(2020).Conifer and broadleaved trees differ in branch allometry but maintain similar functional balances.TREE PHYSIOLOGY,40(4),511-519.
MLA Zhang, Lan,et al."Conifer and broadleaved trees differ in branch allometry but maintain similar functional balances".TREE PHYSIOLOGY 40.4(2020):511-519.
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