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Morphology and longevity of different-order fine roots in poplar (Populus x euramericana) plantations with contrasting forest productivities
Zhu, Wanrui1,2; Sang, Ya Lin2; Zhu, Qiliang2; Duan, Baoli3; Wang, Yanping2,4
2018-06-01
Source PublicationCANADIAN JOURNAL OF FOREST RESEARCH
ISSN0045-5067
Volume48Issue:6Pages:611-620
Corresponding AuthorWang, Yanping(sdauwyp@hotmail.com)
AbstractFine roots play important roles in the allocation of forest net primary productivity. Here, to provide insights into the intrinsic and extrinsic factors affecting the root growth, we examined the morphology and longevity of different-order fine roots in two poplar (Populus x euramericana (Dode) Guinier) plantations with contrasting forest productivities. The results indicated that the biomass of fine roots decreased significantly as the root orders increased (P < 0.05). In the plantation with relatively high productivity, the specific root length of the first-and second-order roots was significantly greater than that of the third-to fifth-order roots (P < 0.05). Observations of minirhizotrons showed that roots of the third-order and higher lived longer than the first-and second-order roots. Compared with those in the plantation with relatively low productivity, the cumulative survival rate of the first-order roots was significantly higher in the plantation with relatively high productivity, while that of the third-order or higher roots was lower. The life-span of the first-order roots correlated negatively with soil available inorganic nitrogen, while that of the second-order roots correlated positively with the soil phenolic acid content. A Cox proportional hazards analysis revealed that soil conditions, root orders, season of root birth, and soil depth significantly affected fine-root longevity. These findings suggest that roots of different orders contribute unequally to the poplar plantation productivity.
Keywordfine-root order poplar plantation root life-span root morphology soil conditions
DOI10.1139/cjfr-2017-0296
WOS KeywordLONGLEAF PINE FOREST ; LIFE-SPAN ; BRANCH ORDER ; CHAMAECYPARIS-OBTUSA ; ANATOMICAL TRAITS ; NITROGEN ; ARCHITECTURE ; SOIL ; CARBON ; DYNAMICS
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[31570618] ; Postdoctoral Science Foundation of China[2015M572070] ; Outstanding Scientists Foundation of Shandong Province, China[BS2012NY006] ; Shandong Double Tops Program[SYL2017XTTD03]
Funding OrganizationNational Natural Science Foundation of China ; Postdoctoral Science Foundation of China ; Outstanding Scientists Foundation of Shandong Province, China ; Shandong Double Tops Program
WOS Research AreaForestry
WOS SubjectForestry
WOS IDWOS:000433154400001
PublisherCANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54841
Collection中国科学院地理科学与资源研究所
Corresponding AuthorWang, Yanping
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Beijing 100101, Peoples R China
2.Shandong Agr Univ, Taishan Forest Ecosyst Res Stn, State Forestry Adm, Coll Forestry, Tai An 271018, Shandong, Peoples R China
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
4.Soil Eros & Ecol Restorat Lab Shandong Prov, Tai An 271018, Shandong, Peoples R China
Recommended Citation
GB/T 7714
Zhu, Wanrui,Sang, Ya Lin,Zhu, Qiliang,et al. Morphology and longevity of different-order fine roots in poplar (Populus x euramericana) plantations with contrasting forest productivities[J]. CANADIAN JOURNAL OF FOREST RESEARCH,2018,48(6):611-620.
APA Zhu, Wanrui,Sang, Ya Lin,Zhu, Qiliang,Duan, Baoli,&Wang, Yanping.(2018).Morphology and longevity of different-order fine roots in poplar (Populus x euramericana) plantations with contrasting forest productivities.CANADIAN JOURNAL OF FOREST RESEARCH,48(6),611-620.
MLA Zhu, Wanrui,et al."Morphology and longevity of different-order fine roots in poplar (Populus x euramericana) plantations with contrasting forest productivities".CANADIAN JOURNAL OF FOREST RESEARCH 48.6(2018):611-620.
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