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Different responses in leaf-level physiology to competition and facilitation under different soil types and N fertilization
Guo, Qingxue1; Song, Haifeng2; Kang, Jieyu1; Korpelainen, Helena3; Li, Chunyang1
2018-06-01
Source PublicationENVIRONMENTAL AND EXPERIMENTAL BOTANY
ISSN0098-8472
Volume150Pages:69-78
AbstractKnowledge of how competition and facilitation affect photosynthetic traits and nitrogen metabolism contributes to understanding of plant-plant interaction mechanisms. We transplanted two larch species, Larix kaempferi and L. olgensis, to establish intra- and interspecific interaction experiments under different types of soil. Experiment 1: Two different soil types were selected, one from a c. twenty years old L. kaempferi plantation (named larch soil) and another from a secondary natural forest (named mixed forest soil). The experiment included three types of plant interactions (L kaempferi + L. kaempferi, L. olgensis + L. olgensis, and L. kaempferi + L. olgensis) and two soil types. Experiment 2: N fertilization was applied to larch soil. The experiment included the same three types of plant interactions as in Experiment 1 and two N treatments. The growth of L kaempferi was negatively affected by larch soil and accelerated by N fertilization, particularly under interspecific interaction. The effects of soil type combined with plant-plant interactions or N fertilization influenced the chlorophyll pigment content, net photosynthetic rate (Pn), photosynthetic N use efficiency (PNUE) and total non-structural carbohydrates of leaves (TNC). CM a/Chl b (ratio of chlorophyll a to chlorophyll b) was higher when the growth of L. kaempferi was facilitated by the presence of L olgensis in mixed forest soil. However, the ratio significantly declined when L. kaempferi confronted strong competition from L. olgensis in larch soil without N fertilization. Under N fertilization in larch soil, Chl a/Chl b of L. olgensis significantly increased by the presence of L. kaempferi. Plant-plant interactions and soil types affected the number of chloroplasts, especially in L. kaempferi, which had a greater number of chloroplasts under interspecific interactions than in monoculture when growing in mixed forest soil. L. olgensis enhanced its ability to absorb N-NO3- under interspecific interactions in larch N- soil, while L. kaempferi enhanced its ability to absorb N-NH4+ under interspecific competition in mixed forest soil. Competition or facilitation modified the photosynthetic traits and nitrogen metabolism depending on the type of soil. Differences in these physiological processes contribute to divergent performance among individuals growing under interspecific or intraspecific competition, or in isolation.
KeywordC and N coordination Forest plantation Plant-plant interactions Plant-soil feedback
DOI10.1016/j.envexpbot.2018.03.006
WOS KeywordPLANT-PLANT INTERACTIONS ; INTERSPECIFIC COMPETITION ; SEXUAL COMPETITION ; POPULUS-CATHAYANA ; NITROGEN ; GROWTH ; TREE ; PLANTATIONS ; COMMUNITIES ; METABOLISM
Language英语
Funding ProjectTalent Program of the Hangzhou Normal University[2016QDL020]
WOS Research AreaPlant Sciences ; Environmental Sciences & Ecology
WOS SubjectPlant Sciences ; Environmental Sciences
WOS IDWOS:000431934600007
Funding OrganizationTalent Program of the Hangzhou Normal University
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/21480
Collection中国科学院水利部成都山地灾害与环境研究所
Corresponding AuthorLi, Chunyang
Affiliation1.Hangzhou Normal Univ, Coll Life & Environm Sci, Hangzhou 310036, Zhejiang, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China
3.Univ Helsinki, Viikki Plant Sci Ctr, Dept Agr Sci, POB 27, FI-00014 Helsinki, Finland
Recommended Citation
GB/T 7714
Guo, Qingxue,Song, Haifeng,Kang, Jieyu,et al. Different responses in leaf-level physiology to competition and facilitation under different soil types and N fertilization[J]. ENVIRONMENTAL AND EXPERIMENTAL BOTANY,2018,150:69-78.
APA Guo, Qingxue,Song, Haifeng,Kang, Jieyu,Korpelainen, Helena,&Li, Chunyang.(2018).Different responses in leaf-level physiology to competition and facilitation under different soil types and N fertilization.ENVIRONMENTAL AND EXPERIMENTAL BOTANY,150,69-78.
MLA Guo, Qingxue,et al."Different responses in leaf-level physiology to competition and facilitation under different soil types and N fertilization".ENVIRONMENTAL AND EXPERIMENTAL BOTANY 150(2018):69-78.
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