IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Partial shading of lateral branches affects growth, and foliage nitrogen- and water-use efficiencies in the conifer Cunninghamia lanceolata growing in a warm monsoon climate
Dong, Tingfa1,2; Li, Junyu1,2; Zhang, Yuanbin3; Korpelainen, Helena4; Niinemets, Uelo5; Li, Chunyang6
Corresponding AuthorLi, Junyu
2015-06-01
Source PublicationTREE PHYSIOLOGY
ISSN0829-318X
Volume35Issue:6Pages:632-643
SubtypeArticle
AbstractThe degree to which branches are autonomous in their acclimation responses to alteration in light environment is still poorly understood. We investigated the effects of shading of the sapling crown of Cunninghamia lanceolata (Lamb.) Hook on the whole-tree and mid-crown branch growth and current-year foliage structure and physiology. Four treatments providing 0, 50, 75 and 90% shading compared with full daylight (denoted as Treatment(0), Treatment(50%), Treatment(75%) and Treatment(90%), and Shaded(0), Shaded(50%), Shaded(75%) and Shaded(90%) for the shaded branches and Sunlit(0), Sunlit(50%), Sunlit(75%) and Sunlit(90%) for the opposite sunlit branches under natural light conditions, respectively), were applied over two consecutive growing seasons. Shading treatments decreased the growth of basal stem diameter, leaf dry mass per unit leaf area, stomatal conductance, transpiration rate, the ratio of water-soluble to structural leaf nitrogen content, photosynthetic nitrogen-use efficiency and instantaneous and long-term (estimated from carbon isotope composition) water-use efficiency in shaded branches. Differences between shaded and sunlit branches increased with increasing severity and duration of shading. A non-autonomous, partly compensatory behavior of non-shaded branches was observed for most traits, thus reflecting the dependence between the traits of sunlit branches and the severity of shading of the opposite crown half. The results collectively indicated that tree growth and branch and leaf acclimation responses of C. lanceolata are not only affected by the local light environment, but also by relative within-crown light conditions. We argue that such a non-autonomous branch response to changes in light conditions can improve whole-tree resource optimization. These results contribute to better understanding of tree growth and utilization of water and nitrogen under heterogeneous light conditions within tree canopies.
KeywordLight Heterogeneity Nitrogen Allocation Partial Shading Photosynthetic Nitrogen-use Efficiency
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1093/treephys/tpv036
WOS Subject ExtendedForestry
Indexed BySCI
WOS KeywordPHOTOSYNTHETIC CAPACITY ; LEAF NITROGEN ; LIGHT ENVIRONMENTS ; PLANT CANOPIES ; ALLOCATION ; ACCLIMATION ; LEAVES ; CROWN ; SUN ; IRRADIANCE
Language英语
WOS SubjectForestry
WOS IDWOS:000357893400006
Funding OrganizationNational Key Basic Research Program of China(2012CB416901)
Citation statistics
Cited Times:29[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10820
Collection山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China
4.Univ Helsinki, Dept Agr Sci, FI-00014 Helsinki, Finland
5.Estonian Univ Life Sci, Inst Agr & Environm Sci, EE-51014 Tartu, Estonia
6.Zhejiang A&F Univ, State Key Lab Subtrop Silviculture, Nurturing Stn, Linan 311300, Zhejiang, Peoples R China
Recommended Citation
GB/T 7714
Dong, Tingfa,Li, Junyu,Zhang, Yuanbin,et al. Partial shading of lateral branches affects growth, and foliage nitrogen- and water-use efficiencies in the conifer Cunninghamia lanceolata growing in a warm monsoon climate[J]. TREE PHYSIOLOGY,2015,35(6):632-643.
APA Dong, Tingfa,Li, Junyu,Zhang, Yuanbin,Korpelainen, Helena,Niinemets, Uelo,&Li, Chunyang.(2015).Partial shading of lateral branches affects growth, and foliage nitrogen- and water-use efficiencies in the conifer Cunninghamia lanceolata growing in a warm monsoon climate.TREE PHYSIOLOGY,35(6),632-643.
MLA Dong, Tingfa,et al."Partial shading of lateral branches affects growth, and foliage nitrogen- and water-use efficiencies in the conifer Cunninghamia lanceolata growing in a warm monsoon climate".TREE PHYSIOLOGY 35.6(2015):632-643.
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