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11篇 您的检索式:作者名="Luan Junwei"
    题名 作者 年代 出处 被引量
1Roles of biotic and abiotic variables in determining spatial variation of soil respiration in secondary oak and planted pine forests显示文摘Junwei Luan Shirong Liu Xueling Zhu Jingxin Wang Kuan Liu 2011Soil Biology and Biochemistry2011,,1:2
2Assessments of the impacts of Chinese fir plantation and natural regenerated forest on soil organic matter quality at Longmen mountain, Sichuan, China显示文摘Junwei Luan Chenghua Xiang Shirong Liu 2010Geoderma2010,156,34:1
3Fine Mapping of QTLs for Stigma Exsertion Rate from Oryza glaberrima by Chromosome Segment Substitution显示文摘Stigma exsertion is an important trait for outcrossing ability in rice.Stigma exsertion rate(SER)of male sterile lines(MSLs)is a key factor affecting F1-seed production in hybrid rice.In this study,seven QTLs for SER were detected on five chromosomes using a set of single-segment substitution lines(SSSLs)derived from O.glaberrima.Three of the QTLs were mapped in the estimated intervals of 92.5–333.0 kb.qSER-5 was located in a substitution segment of 92.5 kb.qS ER-1 b and qS ER-8 b were respectively limited to 333.0 kb and 107.5 kb by secondary substitution mapping.qSER-1 b and qSER-3 had bigger additive effects of 11.5%and 11.9%,respectively,while the other five QTLs had smaller additive effects from 5.7%to 8.6%.Open reading frames were identified in the regions of qS ER-5 and qSER-8 b in O.sativa and O.glaberrima genomes.Fine mapping of the QTLs laid a foundation for the cloning of genes,and QTLs for SER will be used to develop MSLs with strong ability of outcrossing.TAN Quanya ZHU Haitao LIU Hui NI Yuerong WU Shengze LUAN Xin LIU Junwei YANG Weifeng YANG Zifeng ZENG Ruizhen LIU Guifu WANG Shaokui ZHANG Guiquan 2022Rice science2022,29,1:1
4Functional diversity dominates positive species mixture effects on ecosystem multifunctionality in subtropical plantations显示文摘Mixed-species plantations generally exhibit higher ecosystem multifunctionality than monospecific plantations.However,it is unclear how tree species functional composition influences species mixture effects on ecosystem multifunctionality.We selected 171 monospecific and mixed-species plantations from nine regions across subtropical China,and quantified 13 key ecosystem functional properties to investigate how species mixture effects on ecosystem multifunctionality are modulated by functional diversity and identity.We found that ecosystem multifunctionality was significantly higher(p<0.05)in mixed tree plantations than in monospecific plantations except the mixed-conifer species plantations.Across all regions,ecosystem multifunctionality was significantly higher(p<0.05)in mixed conifer-broadleaf plantations than in monospecific plantations of the corresponding species,but not different between mixed and monospecific coniferous plantations.The magnitude of species mixture effects on ecosystem multifunctionality varied greatly with tree species compositions.Taking Cunninghamia lanceolata Lamb.as an example,the effects varied from a range of 2.0%–9.6%when mixed with a conifer species to 36%–87%when mixed with a broadleaf species.The functional diversity was the dominate driver shaping ecosystem multifunctionality,while functional identity,as expressed by community-weighted mean of specific leaf area,also had a positive effect on ecosystem multifunctionality through the increased below-ground nitrogen and phosphorus stocks regulated by specific leaf area of the mixing tree species.Our study highlights the important role of functional diversity in shaping ecosystem multifunctionality across region-wide environmental conditions.Mixed conifer-broadleaf tree plantations with distinct functional traits benefit the enhancement of ecosystem multifunctionality,and the magnitude of species mixture effects is modulated by the functional identity of tree species composition;those relationships deserve a special consideration in multifunctional management context of subtropical plantations.Xi Li Hui Wang Junwei Luan Scott X.Chang Bing Gao Yi Wang Shirong Liu 2022Forest Ecosystems2022,9,3:1
5Soil carbon stock and flux in a warm-temperate oak chronosequence in China 显示文摘LUAN Junwei LIU Shirong ZHU Xueling 2011Plant Soil2011,347,12:1
6Tamoxifen reduces P-gp-mediated multidrug resist- ance via inhibiting the PI3 K/Akt signaling pathway in ER-negative human gastric cancer cells 显示文摘ZONGLEI MAO JIN ZHOU JUNWEI LUAN 2014Biomed Pharmacother2014,68,:1
7Rhizospheric and heterotrophic respiration of a warm-temperate oak chronosequence in China显示文摘Junwei Luan Shirong Liu Jingxin Wang Xueling Zhu Zuomin Shi 2010Soil Biology and Biochemistry2010,,3:1
8Different mechanisms underlying divergent responses of autotrophic and heterotrophic respiration to long-term throughfall reduction in a warm-temperate oak forest显示文摘Background:There are many studies on disentangling the responses of autotrophic(AR)and heterotrophic(HR)respiration components of soil respiration(SR)to long-term drought,but few studies have focused on the mechanisms underlying its responses.Methods:To explore the impact of prolonged drought on AR and HR,we conducted the 2-year measurements on soil CO_(2) effluxes in the 7th and 8th year of manipulated throughfall reduction(TFR)in a warm-temperate oak forest.Results:Our results showed long-term TFR decreased HR,which was positively related to bacterial richness.More importantly,some bacterial taxa such as Novosphingobium and norank Acidimicrobiia,and fungal Leptobacillium were identified as major drivers of HR.In contrast,long-term TFR increased AR due to the increased fine root biomass and production.The increased AR accompanied by decreased HR appeared to counteract each other,and subsequently resulted in the unchanged SR under the TFR.Conclusions:Our study shows that HR and AR respond in the opposite directions to long-term TFR.Soil microorganisms and fine roots account for the respective mechanisms underlying the divergent responses of HR and AR to long-term TFR.This highlights the contrasting responses of AR and HR to prolonged drought should be taken into account when predicting soil CO_(2) effluxes under future droughts.Jinglei Zhang Shirong Liu Cuiju Liu Hui Wang Junwei Luan Xiaojing Liu Xinwei Guoand Baoliang Niu 2021Forest Ecosystems2021,8,3:1
9Assessments of the impacts of Chinese fire plantation and natural regenerated forest on soil organic matter quality at Longmen mountain,Sichuan,China显示文摘Luan Junwei Xiang Chenghua Liu Shirong 2010Geoderma2010,156,34:1
10Assessments of the impacts of Chinese fir plantation and natural regenerated forest on soil organic matter quality at Longmen mountain, Sichuan, China 显示文摘Luan Junwei Xiang Chenghua Liu Shirong 2010Geoderma2010,156,:1
11用^(13)C-CO_(2)脉冲标记法研究氮添加对毛竹母子分株克隆整合的影响显示文摘相连分株间的资源共享(即克隆整合)是克隆植物的显著特征。克隆整合使毛竹(Phyllostachys pubescens)对多种环境条件具有较强的适应性。但毛竹通过克隆整合获得性能提升的机制尚不明确。本研究区分并分析了毛竹光合碳的顶向整合和基向整合,以探究毛竹克隆片段如何在土壤氮异质性条件下提高整体收益。本研究以由两株不同年龄毛竹分株组成的克隆片段为研究对象,分株间通过根状茎连接。每个分株设置氮添加或无氮添加两种处理,并通过单株母株或子株的^(13)C-CO_(2)脉冲标记对光合碳的顶向整合和基向整合进行区分。研究结果表明,子株氮添加显著促进了光合碳由母株向子株的顶向整合,无论母株是否有氮添加,均向氮添加子株转运更多的光合碳。转运自无氮添加母株的光合碳主要分配至氮添加子株的叶片,而转运自氮添加母株的光合碳则主要分配至根系。与无氮添加处理的子株相比,氮添加子株转运更多的光合碳至母株,且该过程不受母株氮添加的影响。转运自氮添加子株的光合碳主要分配至无氮添加母株的根系和氮添加母株的叶片。这些结果说明,母株优先将更多的资源投入到具有高养分可利用性的子株,随后子株作为更高效的资源采集点,根据母株的养分状况针对富集资源进行获取。通过这种方式,克隆植物可以降低资源获取成本并提高资源获取效率,最大限度地提升其整体表现。Wanlu Zhai Yi Wang Junwei Luan Shirong Liu 2022Journal of Plant Ecology2022,15,4:0
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