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Conversion of pure Chinese fir plantation to multi-layered mixed plantation enhances the soil aggregate stability by regulating microbial communities in subtropical China

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Forest Ecosystems 2022年第6期9卷 823-837页

作者： Guannv Gao Xueman Huang Haocheng Xu Yi Wang Weijun Shen Wen Zhang Jinliu Yan Xiaoyan Su Shushou Liao Yeming You Guangxi key laboratory of Forest Ecology and Conservation State Key Laboratory for Conservation and Utilization of Subtropical Agro-BioresourcesCollege of ForestryGuangxi UniversityNanning530004China Guangxi Youyiguan Forest Ecosystem Research Station Pingxiang532600GuangxiChina School of Agriculture Shenzhen Campus of Sun Yat-sen UniversityShenzhen518107GuangdongChina Institute of resources and Environment Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo&Rattan Science and TechnologyInternational Centre for Bamboo and RattanBeijing100102China Experimental Centre of Tropical forestry Chinese Academy of ForestryPingxiang532600GuangxiChina

Background:Soil aggregates are the basic units of soil structure,and their stability is a key indicator of soil quality and capacity to support ecosystem *** impacts of various environmental factors on soil aggregates have been widely ***,there remains elusive knowledge on the synergistic effects of changing forest stand structure on soil aggregate stability(SAS),particularly in subtropical China where soil erosion remains a critical ***:We investigated variations in the components of soil humus(HS),including humic acids(HAs),fulvic acids(FAs),and humins(HMs),under pure Chinese fir(Cunninghamia lanceolata)plantation(PP)and multilayered mixed plantation(MP)comprising ***,Castanopsis hystrix,and Michelia *** state of soil aggregate stability,was determined by three separate methods,i.e.,dry-sieving,wet-sieving,and the Le ***-throughput sequencing was used to determine the diversity and composition of microbial communities under PP and *** then built partial least squares path models(PLS-PM)for assessing the responses of SAS to the variations in soil microorganisms and HS ***:The MP stands had significantly greater SAS(P<0.05),higher content of HAs and more rapid organic matter humification within aggregates,than the PP ***-throughput sequencing confirmed that the Pielou andα-diversity index values(Chao1 and Shannon)for fungi were all significantly higher under MP than under PP,while no marked difference was found in bacterialα-diversity between the two plantation ***,there were markedly greater abundance of three bacterial phyla(Verrucomicrobia,Chloroflexi,and Gemmatimonadetes)and three fungal phyla(Ascomycota,Kickxellomycota,and Glomeromycota),and significantly less abundance of two bacterial phyla(Planctomycetes and Firmicutes)and four fungal phyla(Basidiomycota,Mortierellomycota,Mucoromycota,and Rozellomycota)under MP than under *** Chloroflexi and Ascomycota phy

关键词： Broadleaved tree species Chinese fir plantation Soil aggregate stability Humus Bacterial and fungal communities High-throughput sequencing

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Advances and challenges of cellulose functional materials in sensors

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Journal of Bioresources and Bioproducts 2023年第1期8卷 15-32页

作者： Hongwei Ma Zhiyong Cheng Xiaobai Li Bin Li Yujie Fu Jianchun Jiang key laboratory of Forest Plant Ecology Ministry of EducationEngineering Research Center of Forest Bio-PreparationCollege of ChemistryChemical Engineering and Resource UtilizationNortheast Forestry UniversityHarbin 150040China state Engineering laboratory of Bio-Resource Eco-utilization Northeast Forestry UniversityHarbin 150040China Collaborative Innovation Center for Development and utilization of Forest resources Harbin 150040China The College of forestry Beijing Forestry UniversityBeijing 100083China Institute of Chemical Industry of Forest Products Chinese Academy of ForestryNational Engineering Laboratory for Biomass Chemical UtilizationKey and Open Laboratory of Forest Chemical Engineering of State Administration of Forestry and GrasslandKey Laboratory of Biomass Energy and MaterialNanjing 210042China

As the most abundant natural polymer material on the earth,cellulose is a promising sustainable sensing material due to its high mechanical strength,excellent biocompatibility,good degrada-tion,and regeneration *** the inherent advantages of cellulose and the success of modern sensors,applying cellulose to sensors has always been the subject of considerable investigation,and significant progress has been made in recent ***,we reviewed the research progress of cellulose functional materials(CFMs)in recent *** to the different sources of cellulose,the classification and preparation methods for the design and func-tionalization of cellulose were summarized with the emphasis on the relationship between their structure and ***,the applications of advanced sensors based on CFMs in recent years were also ***,the potential challenges and prospects of the development of sensor based on CFMs were outlined.

关键词： Cellulose functional materials strain sensor humidity sensor chemical sensor

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Functional trait space and redundancy of plant communities decrease toward cold temperature at high altitudes in Southwest China

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Science China(Life Sciences) 2023年第2期66卷 376-384页

作者： Lan Zhang Xiaojuan Liu Zhenhua Sun Wensheng Bu Franca J.Bongers Xiaoyang Song Jie Yang Zhenkai Sun Yin Li Shan Li Min Cao Keping Ma Nathan G.Swenson state key laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of SciencesBeijing 100093China key laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMengla 666303China key laboratory of state forestry administration on Forest Ecosystem Protection and Restoration of Poyang Lake Watershed College of ForestryJiangxi Agricultural UniversityNanchang 330045China key laboratory of Tree Breeding and Cultivation Forestry and Grassland AdministrationResearch Institute of ForestryChinese Academy of ForestryBeijing 100091China Fujian Provincial key laboratory of resources and Environmental Monitoring and Sustainable Management and utilization Sanming UniversitySanming 365004China Department of Biological Sciences University of Notre DameNotre DameIndiana 46556USA

Plant communities in mountainous areas shift gradually as climatic conditions change with altitude. How trait structure in multivariate space adapts to these varying climates in natural forest stands is unclear. Studying the multivariate functional trait structure and redundancy of tree communities along altitude gradients is crucial to understanding how temperature change affects natural forest stands. In this study, the leaf area, specific leaf area, leaf carbon, nitrogen, and phosphorous content from 1,590 trees were collected and used to construct the functional trait space of 12 plant communities at altitudes ranging from 800 m to 3,800 m across three mountains. Hypervolume overlap was calculated to quantify species trait redundancy per community. First,hypervolumes of species exclusion and full species set were calculated, respectively. Second, the overlap between these two volumes was calculated to obtain hypervolume overlap. Results showed that the functional trait space significantly increased with mean annual temperature toward lower altitudes within and across three mountains, whereas species trait redundancy had different patterns between mountains. Thus, warming can widen functional trait space and alter the redundancy in plant communities. The inconsistent patterns of redundancy between mountains suggest that warming exerts varying influences on different ecosystems. Identification of climate-vulnerable ecosystems is important in the face of global warming.

关键词： leaf trait plant community hypervolume redundancy altitude natural forest

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Reply to Zwaenepoel et al.: Meeting the Challenges of Detecting Polyploidy Events from Transcriptomic Data

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Molecular Plant 2019年第2期12卷 137-140页

作者： Haifeng Wang Chunce Guo Hong Ma Ji Qi state key laboratory for Conservation and utilization of Subtropical Agro-Bioresources Guangxi Key Lab of Sugarcane Biology College of Agriculture Guangxi University Nanning Guangxi China Jiangxi Provincial key laboratory for bamboo Germplasm resources and utilization Forestry College Jiangxi Agricultural University Nanchang China Department of Biology and the Huck Institutes of the Life Sciences The Pennsylvania State University University Park PA USA state key laboratory of Genetic Engineering School of Life Sciences Fudan University Shanghai China

Dear Editor,Transcriptomic data have been widely employed to infer whole genome duplications (WGDs, or paleopolyploidy)(Jiao et al., 2011;Barker et al., 2016;Huang et al., 2016), through the use of large numbers of re... 详细信息

关键词： Challenges Detecting Polyploidy Events Transcriptomic Data

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Synthesis and Application of UV-curable Phosphorous-Containing Acrylated Epoxidized Soybean Oil-based Resins

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Journal of Bioresources and Bioproducts 2019年第3期4卷 49-57页

作者： Yun HU Puyou JIA Qianqian SHANG Meng ZHANG Guodong FENG Chengguo LIU Yonghong ZHOU Institute of Chemical Industry of Forest Products Chinese Academy of ForestryKey Lab of Biomass Energy and MaterialJiangsu ProvinceNational Engineering Lab for Biomass Chemical UtilizationKey Lab on Forest Chemical EngineeringState Forestry AdministrationNanjing 210042China Co-Innovationof Efficient Processing and utilization of Forest resources Nanjing Forestry UniversityNanjing 210037China

A novel phosphorous-containing acrylated epoxidized soybean oil-based(P-AESO)resin was developed via the ring-opening reaction of epoxidized soybean oil(ESO)with diphenylphosphinic chloride(DPPC),followed by acrylation of the resulting *** chemical structure was characterized by Fourier transform infrared spectroscopy(FT-IR),and ^(1)H nuclear magnetic resonance(^(1)H NMR).Subsequently,the viscosity and volumetric shrinkage of the obtained P-AESO resins were *** the oligomer was formulated into UV-curable coatings,and the mechanical,thermal,and coating properties of the resulting UV-cured bioresins were studied by tensile testing,dynamic mechanical thermal analysis(DMA),thermogravimetric analysis(TGA)coupled with FT-IR spectroscopy(TGA-FT-IR),hardness,adhesion,pencil hardness and chemical ***,the UV-curing behavior of the P-AESO resin was determined by real-time realtime infrared(RT-IR).Meanwhile,compared with coating from acrylated epoxidized soybean oil(AESO),the P-AESO system coatings showed better volumetric shrinkage,excellent adhesion,and enhanced thermal and glass transition temperature(Tg)while maintaining reasonably final C=C conversions and cross-link *** instance,the obtained P-AESO/trimethylolpropanetriacrylate(TMPTA)20 material possessed a volumetric shrinkage of 4.1%,Tg of 115.6℃,char yield of 9.47%,and final C=C conversions of 81.4%respectively,which exhibited superior values than that of the AESO/TMPTA20 *** improvement of the P-AESO coating performances could contribute to the architectures that combined the structural features of phosphorous-containing rigid *** developed P-AESO resin is promising for applications in the UV-curable coatings.

关键词： biobased UV-curable coatings acrylated epoxidized soybean oil diphenylphosphinic chloride

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Crisis of Water resources on the Ulan Buh Desert Oases, Inner Mongolia, China-A Case Study of Dengkou County

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Journal of Integrative Agriculture 2013年第8期12卷 1409-1413页

作者： MENG Zhong-ju GAO Yong YU Yi REN Xiao-meng Ecology and Environment College Inner Mongolia Agricultural University International Center for bamboo and Rattan State Forestry Administration Meteorological Institute of Inner Mongolia

Hetao Plain, composed of hundreds of oases, is one of the most important grain-producing areas in China. Most crops, especially wheat and corn, depend on irrigation, thus water availability is a key issue for grain productivity on this land. The Yellow River is the main water source for irrigation and a crisis of water resources for agricultural use occurs because of increasingly reduced river flows and water-using competition with industry and human residential use. In order to understand the current situation and distribution of water resources on these oases, we collected 20-yr＇s data of river runoff, irrigation volumes, infiltration and precipitation to examine the relationships between water resources distribution and its agricultural use. We found that the oasis in Dengkou county was short of water resources with a water deficit rate of 5.14% in 2010. Based on the trend of the data, water deficit will continue to increase as the population grows in the future. Water resource is a limiting factor to agricultural development in this region and proper management of water use and strategies for water resource conservation are urgently needed. Especially, based on our results we suggest that current irrigation methods need to be greatly improved to save the water that was lost from evaporation.

关键词： irrigation oasis Ulan Buh Desert water crisis water conservation water resources

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Assessing stand structure in successional stages of dark coniferous forests in western Sichuan, China

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Journal of forestry Research 2016年第4期27卷 779-786页

作者： Jiangming Ma Shirong Liu Zuomin Shi Jingxin Wang key laboratory of Forest Ecology and Environment State Forestry Administration Institute of Forest EcologyEnvironment and Protection Chinese Academy of Forestry College of Life Science Guangxi Normal University key laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University) Ministry of Education China Division of forestry and Natural resources West Virginia University

Subalpine dark coniferous forests in the western Sichuan Province of China play an important role in the hydrological processes in the upper reaches of the Yangtze River. Second-growth forests, with different stand successional stages, have developed as a result of logging over the past 50 years. Forest cover and stand structure changed greatly with concomitant degradation of forest ecosystem functions. To understand how the stand structures of the second-growth forests change during the stand succession process, we analyzed stand structure characteristics and an old-growth state index of the bamboo and moss-forest types. We found that stand structure at the young successional stage featured one-third of the structure characteristics of the old-growth dark coniferous forests,while the structure of the medium-aged stage had reached half the structure of the old-growth state. The two forest types were similar in the rate of development at the young successional stage but differed at the medium-aged stage;the moss-forest type had more advanced development than the bamboo-forest type at the medium-aged successional stage.

关键词： stand forests bamboo leaved ecosystem logging young Yangtze succession shrub

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Physicochemical and Functional Properties of Water Soluble Gum from Wrinkle Floweringquince(Chaenomeles Speciosa)Seeds

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Journal of Bioresources and Bioproducts 2019年第4期4卷 222-230页

作者： Yejun DENG Lixin HUANG Caihong ZHANG Pujun XIE Jiang CHENG Xiaojie WANG Institute of Chemical Industry of Forest Products Chinese Academy of ForestryNational Engineering Lab for Biomass Chemical UtilizationKey and Open Lab of Forest Chemical EngineeringState Forestry AdministrationKey Lab of Biomass Energy and MaterialJiangsu ProvinceNanjing 210042China Research Institute of forestry New Technology Chinese Academy of ForestryBeijing 100091China Co-Innovation Center of Efficient Processing and utilization of Forest resources Nanjing Forestry UniversityNanjing 210037China

Wrinkle Floweringquince(Chaenomeles speciose(Sweet)Nakai)seed,as an unexploited forestry residue,contains considerable amount of bioactive carbohydrates with potential functionality,which was not widely *** aim of this study is to determine the basic characterizations(molecular weight and functional group),specificcomponents(carbohydrate,protein and uronic acid contents),and functional properties of Chaenomeles speciosa seedgum(CSG).Results indicated that carbohydrate(63.80%),protein(13.69%)and uronic acid(10.30%)contents *** CSG(average molecular weight,9.85×106 u)consists rhamnose,arabinose,xylose and glucose in a molarpercentage of 29.77꞉10.54꞉18.55꞉15.84,*** Fourier transform infrared(FT-IR)analysis revealed hydroxyl,carboxyl and methyl groups andα-glycosidic linkages are founded in the *** CSG was surface active and its abilityto decrease surface tension was comparable to commercial ***,the CSG solutions showed pseudoplasticflow behavior under dynamic shear rate at high *** GSC also presented good emulsifying and foamingproperties,indicating the potential of the GSC as bioresource stabilizer and thickener in industry.

关键词： Chaenomeles speciosa seed physicochemical characterization emulsifying property

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Liquefaction of bamboo biomass and production of three fractions containing aromatic compounds

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Journal of Bioresources and Bioproducts 2020年第2期5卷 114-123页

作者： Yan Ma Weihong Tan Jingxin Wang Junming Xu Kui Wang Jianchun Jiang Institute of Chemical Industry of forestry Products Chinese Academy of ForestryKey and Open Lab.of Forest Chemical EngineeringSFANational Engineering Laboratory for Chemical Utilization of BiomassKey Laboratory of Biomass Energy and Materials of Jiangsu ProvinceNanjing 210042China Division of forestry and Natural resources West Virginia UniversityMorgantownWV 26506United States Co-Innovation Center of Efficient Processing and utilization of Forest resources Nanjing Forestry UniversityNanjing 210037China

Depolymerization of lignin to produce value-added aromatic monomers has attracted increasing attention since these monomers can be used as phenol replacement in production of phenolic *** a one-pot depolymerization of bamboo lignin was investigated to obtain aromatic platforms with low molecular weight using acidic catalyst and *** fractions(1#,2#,and 3#)containing different molecular weight distributions of aromatic compounds could be efficiently extracted using water-organic solvent system via a stepwise fractionation process by gradual removal of *** fractions distribution was found to be primarily dependent on the reaction temperature and *** the temperature was increased from 160°C to 200°C,the yield of fractions containing aromatic products increased significantly from 19.1 wt%to 27 wt%,the same change trend was found by changing the time,and the yield of aromatic products increased from 22.4%to 26.7%with an increase of time from 10 min to 30 *** bioproducts were characterized by using gas chromatography/mass spectrometry(GC-MS),gel permeation chromatography(GPC)and two-dimensional heteronuclear single-quantum coherence(2D HSQC NMR).As evidenced by GC-MS spectra,the three fractions were mainly comprised of phenolic derivatives,and the relative contents of phenolic compounds took up about 80%of the total area of each *** the similar physiochemical properties of the fractions,aromatic platforms could provide a new paradigm of bamboo lignin utilization for renewable energy and value-added biochemicals.

关键词： Aromatic compound Fraction Liquefaction Biomass conversion Bioproduct

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Morphological and genomic evidence for a new species of Corallorhiza(Orchidaceae:Epidendroideae)from SW China

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Plant Diversity 2021年第5期43卷 409-419页

作者： Jia-Xin Yang Shuai Peng Jun-Jie Wang Shi-Xiong Ding Yan Wang Jing Tian Han Yang Guang-Wan Hu Qing-Feng Wang CAS key laboratory of Plant Germplasm Enhancement and Specialty Agriculture Wuhan Botanical GardenChinese Academy of SciencesWuhan430074China Sino-Africa Joint Research Center Chinese Academy of SciencesWuhan430074China University of Chinese Academy of Sciences Beijing100049China Jiangxi Provincial key laboratory for bamboo Germplasm resources and utilization Forestry CollegeJiangxi Agricultural UniversityNanchang330045China administration of Siguniang Mountains National Nature Reserve Xiaojin624206China

Corallorhiza sinensis,a new species of mycoheterotrophic orchid from western Sichuan,China,is described and illustrated based on molecular and morphological *** is morphologically similar to Corallorhiza trifida,but can be distinguished by bigger flowers,both sepals and petals with 3 veins,and longer lateral lobes of *** distinguish the new Corallorhiza species and explore its phylogenetic position within subtribe Calypsoinae,this study employed sequences of the nuclear ribosomal DNA(nrDNA)and whole plastome assembled from the genome skimming *** plastome is 148,124 bp in length,including a pair of inverted repeats(IRs)of 26,165 bp,a large single-copy region(LSC)of 82,207 bp,and a small single-copy region(SSC)of 13,587 ***,phylogenetic analyses were performed using nrDNA sequence and 79 coding sequences(CDSs)from 26 complete plastomes of subtribe *** phylogenetic tree based on nrDNA sequence suggested that Corallorhiza is a monophyletic group,and strongly support *** as sister to the rest species of *** plastid tree showed that 10 Corallorhiza species grouped into two clades and *** is most closely related to the North American *** and *** instead of Oreorchis foliosa and *** in the same *** plastid tree and nrDNA tree indicate Oreorchis is a *** the topological conflicts are displayed between plastome and nrDNA phylogenies of ***,it is still the most closely related to *** analysis showed that *** populations are characteristic of the intermediate morphological traits between Corallorhiza and *** finding of this new species from China shed new light on the phylogeny of Oreorchis and Corallorhiza.

关键词： Corallorhiza sinensis Oreorchis Sichuan province Plastome Phylogeny

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