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Forest characteristics,population structure and growth trends of threatened relict Pseudotsuga forrestii in China

Plant Diversity 2023年第4期45卷 422-433页

作者： Cindy Q.Tang Shi-Qian Yao Peng-Bin Han jian-ran wen Shuaifeng Li Ming-Chun Peng Chong-Yun Wang Tetsuya Matsui Yong-Ping Li Shan Lu Yuan He Institute of Ecology and Geobotany College of Ecology and Environmental ScienceYunnan UniversityBuilding ShixunChenggong CampusDongwaihuan South RoadUniversity TownChenggong New DistrictKunmingYunnan 650504China College of Life Sciences Yunnan UniversityShengming Kexueyuan Building#2Chenggong CampusDongwaihuan South RoadUniversity TownChenggong New DistrictKunmingYunnan 650504China Institute of Highland Forest Science Chinese Academy of ForestryKunmingYunnan 650224China Forestry and Forest Products Research Institute Forest Research and Management OrganizationMatsunosato 1Tsukuba-shiIbaraki-ken305-8687Japan Faculty of Life&Environmental Sciences University of Tsukuba1-1-1 TennodaiTsukubaIbaraki305-8572Japan College of Natural Resources Yunnan UniversityChenggong CampusDongwaihuan South RoadUniversity TownChenggong New DistrictKunmingYunnan 650504China Forestry and Grassland Bureau of Diqing Tibetan Autonomous Prefecture 1st Floor of Government BuildingShengping TownDeqing CountyYunnan 674500China Forestry and Grassland Bureau of Weixi Lisu Autonomous County Nanjian Dao#7Baohe TownWeixi Lisu Autonomous CountyYunnan 674600China

Pseudotsuga forrestii is a relict evergreen coniferous tree species in Pinaceae endemic to *** tree numbers have greatly decreased due to deforestation,over-utilization and habitat *** we clarify *** community types,structure,species diversity,seedling recruitments and growth *** identified four *** community types:(1)Pseudotsuga forrestii-Quercus guyavifolia-Acer davidii evergreen coniferous and broad-leaved mixed forest;(2)Pseudotsuga forrestii-Pinus yunnanensis-Quercus guyavifolia evergreen coniferous and broad-leaved mixed forest;(3)Pseudotsuga forrestii evergreen coniferous forest;(4)Pseudotsuga forrestii-Abies georgei *** evergreen coniferous *** forests are characterized by both warm temperate and temperate *** diversity,Pielou evenness,Shannon-Wiener diversity indices ranged from 0.75 to 0.76,0.74-0.81,and 1.62-1.93,respectively,with no significant differences among the four forest *** forest stratification was *** canopy layer was generally 10-25 m tall,with the emergent layer reached 25-42 *** and age structures of *** showed multimodal *** maximum age *** was 570 years with a DBH of 143 *** growth of annual ring width of *** was slow,and generally decreased with age,whereas the basal area at the breast height increased with *** seedlings/saplings were mainly found in unstable *** of *** depends on moderate natural ***,we provide recommendations for *** conservation.

关键词： Pseudotsuga forrestii Community structure Species diversity Population structure Regeneration Growth trend

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An unprotected vulnerable relict subtropical conifer-Keteleeria evelyniana: Its forests, populations, growth and endangerment by invasive alien plant species in China

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Plant Diversity 2024年第5期46卷 648-660页

作者： Cindy Q.Tang Min-Rui Du Huan-Chong Wang You-Cai Shi Jia-Le Zeng Shu-Li Xiao Peng-Bin Han jian-ran wen Shi-Qian Yao Ming-Chun Peng Chong-Yun Wang Yong-Ping Li Jordi López-Pujol Institute of Ecology and Geobotany College of Ecology and Environmental ScienceYunnan UniversityBuilding#3Guozhong DalouDongwaihuan South RoadUniversity TownChenggong New DistrictKunming 650504YunnanChina College of Life Sciences Yunnan UniversityShengming Kexueyuan Building#2Chenggong CampusDongwaihuan South RoadUniversity TownChenggong New DistrictKunming 650504YunnanChina College of Natural Resources Yunnan UniversityChenggong CampusDongwaihuan South RoadUniversity TownChenggong New DistrictKunming 650504YunnanChina Botanic Institute of Barcelona(IBB CSIC-CMCNC)Passeig del Migdia s/nBarcelona 08038CataloniaSpain Escuela de Ciencias Ambientales Universidad Espíritu Santo(UEES)Samborondon 091650Ecuador

Relict subtropical coniferous forests in China face severe fragmentation,resulting in declining populations,and some are under significant threat from invasive alien *** the crucial importance of understanding forest dynamics,knowledge gaps persist,particularly regarding the impact of invasive plants on vulnerable natives like Keteleeria *** this study,we investigated the impact of invasive plants on the regeneration of forests dominated by ***,a subtropical relict species in southwestern *** this purpose,we characterized forest dynamics of 160 forest plots featuring *** as the primary dominant species and determined whether the presence of invasive plants was correlated with regeneration of *** identified four distinct forest types in which *** was *** found that radial growth of *** trees is faster in younger ageclasses today than it was for older trees at the same *** population structure of *** in each forest type exhibited a multimodal age-class ***,three forest types lacked established saplings younger than 10 years old,a situation attributed to the dense coverage of the invasive alien Ageratina *** invasive species resulted in a reduction of understory species ***,our analysis uncovered a significant negative correlation in phylogenetic relatedness(net relatedness index)between native and invasive alien plant species in eastern *** suggests closely related invasive species face heightened competition,hindering successful *** together,our findings indicate that successful establishment and habitat restoration of *** seedling/saplings require effective measures to control invasive plants.

关键词： Keteleeria evelyniana Age structure Regeneration Species diversity Invasive alien species Phylogenetic relatedness

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Forest characteristics and population structure of a threatened palm tree Caryota obtusa in the karst forest ecosystem of Yunnan,China

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Journal of Plant Ecology 2022年第4期15卷 829-843页

作者： Cindy Q.Tang Xia Lu Min-Rui Du Shu-Li Xiao Shuaifeng Li Peng-Bin Han Jia-Le Zeng jian-ran wen Shi-Qian Yao You-Cai Shi Yun-Fang Li Ming-Chun Peng Chong-Yun Wang Zhi-Ying Zhang Institute of Ecology and Geobotany College of Ecology and Environmental ScienceYunnan UniversityKunming 650504China Research Institute on Resource Insects Chinese Academy of ForestryKunming 650224China Management Office of Yunlong Tianchi National Nature Reserve GuolangDali PrefectureYunnan 672700China

Caryota obtusa of Arecaceae is a fascinating palm tree native to southwestern China,India,Myanmar,Thailand,Laos and *** is an economically important and threatened species and appears as a canopy dominant in some karst areas in *** aim to clarify the forest structure,species diversity,population status and regeneration dynamics of *** in the karst forest ecosystem of Yunnan,*** established 56 vegetation plots dominated by *** in 10 counties of southern *** on the plot data,we analyzed the community stratification,floristic composition and ***’s population *** used questionnaires to interview local people and recorded the human activity history in ***-dominated *** obtusa palm forests were distributed on limestone mountain slopes and *** were seven forest community *** stratification of each community included arborous layer,shrub layer and *** communities had rich species *** all the plots as a whole of each community type,Shannon–Wiener diversity index of either woody or herbaceous species ranged from 2.1 to *** diameter at breast height(DBH)-class frequency distribution of *** was a multimodal *** regeneration was sporadic and dependent on intermediate natural *** the current population structure,a number of *** trees with small DBHs consisted mainly of the forest communities with no or a slight degree of human *** human activities terribly hindered recruitment of ***,followed by the medium intensity of human activities.

关键词： Caryota obtusa community structure species diversity population structure regeneration dynamics human disturbance

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对彩色图像印前制作中的几个问题的分析

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印刷世界 2009年第6期14卷 23-24页

作者：冉建文云锡广元彩色包装印刷厂

一张图文原稿，往往要经过许多设备的处理，才能得到其复制品。这些设备包括输入设备、图形及图像处理设备、输出设备等。数字化印前图文信息处理系统是开放型的，并不受限于所使用的设备、材料和工艺过程。各种品牌、类型和颜色特征的... 详细信息

一张图文原稿，往往要经过许多设备的处理，才能得到其复制品。这些设备包括输入设备、图形及图像处理设备、输出设备等。数字化印前图文信息处理系统是开放型的，并不受限于所使用的设备、材料和工艺过程。各种品牌、类型和颜色特征的设备的呈色特征的多样性增加了颜色；隹确再现的难度。图文信息在这些设备的传递过程中，难免会产生信息损失，

关键词：印前制作彩色图像输入设备图像处理设备信息处理系统颜色特征图文信息数字化印前

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Mesospheric tide comparisons at low latitudes observed by two collocated meteor radars

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Earth and Planetary Physics 2025年第1期9卷 54-68页

作者： jian Li wen Yi XiangHui Xue Jie Zeng HaiLun Ye jianYuan Wang JinSong Chen Na Li TingDi Chen Chinese Academy of Sciences(CAS)Key Laboratory of Geospace Environment Department of Geophysics and Planetary SciencesUniversity of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Comparative Planetology Anhui Mengcheng Geophysics National Observation and Research StationUniversity of Science and Technology of ChinaHefei 230026China Hefei National Laboratory University of Science and Technology of ChinaHefei 230026China Collaborative Innovation Center of Astronautical Science and Technology Harbin 150001China National Key Laboratory of Electromagnetic Environment China Research Institute of Radiowave PropagationQingdao 266107China Yunnan Kunming Electromagnetic Environment National Observation and Research Station Qujing Kunming 655000China

Accurate knowledge of mesospheric winds and waves is essential for studying the dynamics and climate in the mesosphere and lower thermosphere(MLT)*** this study,we conduct a comparative analysis of the mesosphere tidal results obtained from two adjacent meteor radars at low latitudes in Kunming,China,from November 2013 to December *** two radars operate at different frequencies of 37.5 MHz and 53.1 MHz,***,overall good agreement is observed between the two radars in terms of horizontal winds and tide *** results show that the dominant tidal waves of the zonal and meridional winds are diurnal and semidiurnal ***,we conduct an exhaustive statistical analysis to compare the tidal amplitudes and vertical wavelengths recorded by the dual radar systems,which reveals a high degree of alignment in tidal *** investigation includes variances and covariances of tidal amplitudes,which demonstrate remarkable consistency across measurements from both *** finding highlights clear uniformity in the mesospheric tidal patterns observed at low latitudes by the two neighboring meteor *** of the comparative analysis specifically underscore the significant correlation in vertical wavelength measurements,validating the robustness of radar observations for tidal research.

关键词： mesosphere and lower thermosphere region meteor radar mesospheric winds tides

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Identification of a dual functional betulinic acid analog for the treatment of osteoarthritis by phenotypic screening

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Science China Life Sciences 2025年第1期68卷 300-302页

作者： Ze-Min Lin Mai Xiang wen-Hui Wei Shu-Hui Fan Li Chen Jie Wang Xiao-Qian Yang Chun-Hao Yang Shi-Jun He jian-Ping Zuo Laboratory of Immunopharmacology State Key Laboratory of Drug ResearchShanghai Institute of Materia MedicaChinese Academy of Sciences School of Pharmacy University of Chinese Academy of Sciences School of Pharmacy Nanjing University of Chinese Medicine State Key Laboratory of Drug Research Department of Medicinal ChemistryShanghai Institute of Materia MedicaChinese Academy of Sciences Innovation Research Institute of Traditional Chinese Medicine Shanghai University of Traditional Chinese Medicine Experiment Center for Science and Technology Shanghai University of Traditional Chinese Medicine

Dear Editor, Phenotypic drug discovery, which observes compound effects on physiology,has given way to targeting specific molecules, but has revived by using modern methods to find drugs based on therapeutic outcomes in disease models(Vincent et al., 2022). Osteoarthritis(OA) is a prevalent chronic joint disorder, primarily affecting knee joints, with osteoclast activation due to low-grade inflammation resulting in increased bone resorption and structural changes in the joint(Katz et al.,2021).

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Stepwise assembly to construct stable copper(I) cluster-based circularly polarized luminescent MOFs

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Science China Chemistry 2025年

作者： Jing-wen Xie Meng-Ting Wang Yan Jin Si Li jian-Hua Qin Shuang-Quan Zang Tomas C.W.Mak College of Chemistry Henan Key Laboratory of Crystalline Molecular Functional Materials Zhengzhou University College of Chemistry and Chemical Engineering Luoyang Normal University Department of Chemistry The Chinese University of Hong Kong

Circularly polarized luminescence （CPL） materials have been extensively studied in recent years owing to their widespread applications in 3D display,optical storage,optical anti-counterfeiting,and biological imaging,***（I） clusters have emerged as a promising candidate for CPL materials,driven by their cost-effectiveness,superior luminescent properties,precise structure,and low ***,the poor environmental stability of copper（I） clusters renders their synthesis and preservation challenging,thereby significantly impeding their ***,we have designed and synthesised a chiral double-coordinated ligand in order to construct copper（I） cluster nodes that can be further *** anticipated,by utilizing stepwise assembly strategy,a Cu4cluster node co-modified by chiral alkynyl ligands and triphenylphosphine was further assembled with Cd2+ions to obtain 2D layers structure,L/*** L/D-Cu4-Cd exhibits excellent stability and optical properties,including bright yellow emission,solvent-responsive luminescence,and CPL activity with a maximum glumup to 2.0×10-3,which shows potential applications in the WLED and *** interestingly,the material also exhibits deflection ability towards different wavelengths of linearly polarized light,showing certain potential in the preparation of circular polarizer.

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学习飞腾创艺5.0心得及体会

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印刷世界 2008年第10期13卷 40-40页

作者：冉建文云南个旧云锡广元彩色包装印刷厂

笔者最近参加了云南省印刷技术研究所、《印刷世界》杂志方正培训中心在昆明开设的飞腾创艺5．0软件培训班学习，通过学习让我对新一代飞腾创艺5．0有了进一步的了解，在编排设计上有了全新的认识和提高。

关键词：学习印刷技术培训中心编排设计研究所云南省培训班软件

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A chiral aldehyde-induced tandem conjugated addition–lactamization reaction for constructing fully substituted pyroglutamic acids

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Organic Chemistry Frontiers 2022年第5期9卷 1422-1426页

作者： wen-Zhe Wang Hao-ran Shen jian Liao Wei wen Qi-Xiang Guo Key Laboratory of Applied Chemistry of Chongqing Municipality School of Chemistry and Chemical EngineeringSouthwest UniversityChongqing400715China

A catalytic asymmetric tandem reaction including a chiral aldehyde catalyzed conjugated addition and an intramolecular lactamization is reported in this *** the optimal reaction conditions,various fully substituted pyroglutamic acids bearing three vicinal chiral centers were generated in good-to-excellent yields and stereoselectivities.A reasonable reaction mechanism is proposed to illustrate the observed stereoselective control results.

关键词： chiral substituted conjugated

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A Highly Selective Metal-Free Boron-Based Catalyst for Oxidative Dehydrogenation of Ethylbenzene

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Chinese Journal of Chemistry 2021年第9期39卷 2563-2569页

作者： Yue-ran Wang jian Sheng wen-Duo Lu Bing Yan An-Hui Lu State Key Laboratory of Fine Chemicals Liaoning Key Laboratory for Catalytic Conversion of Carbon ResourcesSchool of Chemical EngineeringDalian University of TechnologyDalianLiaoning 116024China

Oxidative dehydroge nation of ethylbenzene is con sidered as an alter native route to styrene because of its exothermic and irreversible reaction nature,but encounters low styrene selectivity due to the deep-oxidation over metal oxide-based ***,we reported that a metal-free boron-based catalyst consisting of boron phosphate and boron nitride(BPO_(4)/BN)exhibited high activity and selectivity in oxidative dehydroge nation of ethylbenze ne to sty re *** selectivity of styre ne(95.1%)was achieved at 27.7%ethylbenzene conversion level over the optimized BPO_(4)/BN *** tetra-coordinated boron(BO_(4))species of BPO_(4) was speculated to be responsible for the ODH of ethylbenzene,and a synergistic effect between BPO4 and BN can remarkably improve the catalytic performance of the BPO_(4)/BN *** optimized BPO_(4)/BN catalyst showed a higher styrene formation rate of 4.0mmol g_(cat)^(-1)·h^(-1),compared individually to BPO_(4)(2.8mmol g_(cat)^(-1)·h^(-1))and BN(0.5mmol g_(cat)^(-1)·h^(-1)).

关键词： Dehydrogenation Alkenes Metal-free|Boron phosphate Supported catalysts

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