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Scanning the horizon for nascent environmental hazards

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National Science Review 2014年第3期1卷 330-331页

作者： Zhigang Jiang keping ma Institute of Zoology Chinese Academy of Sciences Institute of Botany Chinese Academy of Sciences

In retrospect,it becomes evident that many environmental and conservation problems could have been detected or prevented at their early ***,in most cases,the early warning signs of such environmental issues are neglected;thus,the chance to take timely action is lost and heavy damage oten *** of these cases have been identiied by the European Union[1].For example,the UK government failed to foresee pub-

关键词： Scanning the horizon for nascent environmental hazards

Leaf functional traits vary with the adult height of plant species in forest communities

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Journal of Plant Ecology 2014年第1期7卷 68-76页

作者： Dongmei Jin Xuecui Cao keping ma State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of Sciences20 NanxincunXiangshanBeijing 100093China Graduate School of Chinese Academy of Sciences 19 Yuquan RoadBeijing 100049China

Aims Within-community variation accounts for a remarkable proportion of the variation in leaf functional *** height may be used to explain within-community variances of leaf traits because different microenvironments,especially light intensity,may occur at different *** study determines whether or not leaf nitrogen(N)and phosphorus(P)contents as well as leaf mass per area(Lma)are interspecifically correlated with the adult height of forest woody *** also discuss these relationships with respect to community structure and functions of the *** A total of 136 dicotyledonous woody species from 6 natural forests(3 evergreen and 3 deciduous ones)in East China(18°44′–45°25′N,108°50′–128°05′E)were *** each of the 157 species–site combinations,6 traits were measured:plant adult height relative to the forest canopy(H_(R)),leaf N and P contents per unit area(N_(area) and P_(area)),N and P contents per unit dry mass(N_(mass) and P_(mass))and *** total variances of each leaf trait across sites were partitioned in a hierarchical *** relationships between leaf traits and H_(R) within forest communities were then analyzed using both standardized major axis regression and Felsenstein’s phylogenetic independent *** between evergreen and deciduous forests were compared by linear mixed *** Findings H_(R) is a robust predictor of leaf N_(area),P_(area) and Lma,explaining 36.7%,39.4%and 12.0%of their total variations across forests,*** N_(area),P_(area) and Lma increased with H_(R) in all of the studied forests,with slopes that were steeper in evergreen forests than in deciduous *** N_(mass) and P_(mass) showed no significant relationship with H_(R) *** increase in leaf N_(area),P_(area) and Lma with H_(R) across species is assumed to maximize community photosynthesis and may favor species with larger H_(R).

关键词： leaf traits nitrogen phosphorus height interspecific phylogeny

Effects of climate change on biodiversity

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Chinese Science Bulletin 2014年第34期59卷 4637-4638页

作者： Zehao Shen keping ma Department of Ecology College of Urban and Environmental Sciences Key Laboratory of the Ministry of Education for Earth Surface Processes Peking University State Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences

直到 1980 年代，气候变化和生物多样性为超过一个世纪作为二个独立学科被学习。在 1992，美洲年度报告的生态的社会作为第二十一个世纪的三个主要全球环境问题说出气候变化，生物多样性，和持续生态的系统[1 ] 。

关键词：生物多样性气候变化年度报告生态学会生态系统环境问题

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Point process models, the dimensions of biodiversity and the importance of small-scale biotic interactions

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Journal of Plant Ecology 2014年第2期7卷 126-133页

作者： Xiangcheng Mi Lei Bao Jianhua Chen keping ma State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of Sciences20 NanxincunXiangshanBeijing 100093China College of Life Science Beijing Normal University19 Xinjiekouwai StreetHaidian DistrictBeijing 100875China College of Chemistry and Life Sciences Zhejiang Normal University688 Yingbin RoadJinhuaZhejiang 321004China

Aims Recent mechanistic explanations for community assembly focus on the debates surrounding niche-based deterministic and dispersalbased stochastic *** body of work has emphasized the importance of both habitat filtering and dispersal limitation,and many of these works have utilized the assumption of species spatial independence to simplify the complexity of the spatial modeling in natural communities when given dispersal limitation and/or habitat *** potential drawback of this simplification is that it does not consider species interactions and how they may influence the spatial distribution of species,phylogenetic and functional ***,we assess the validity of the assumption of species spatial independence using data from a subtropical forest plot in southeastern *** We use the four most commonly employed spatial statistical models—the homogeneous Poisson process representing pure random effect,the heterogeneous Poisson process for the effect of habitat heterogeneity,the homogenous Thomas process for sole dispersal limitation and the heterogeneous Thomas process for joint effect of habitat heterogeneity and dispersal limitation—to investigate the contribution of different mechanisms in shaping the species,phylogenetic and functional structures of *** Findings Our evidence from species,phylogenetic and functional diversity demonstrates that the habitat filtering and/or dispersal-based models perform well and the assumption of species spatial independence is relatively valid at larger scales(50×50 m).Conversely,at local scales(10×10 and 20×20 m),the models often fail to predict the species,phylogenetic and functional diversity,suggesting that the assumption of species spatial independence is invalid and that biotic interactions are increasingly important at these spatial scales.

关键词： point process model niche neutral theory dispersal limitation habitat filtering assumption of species spatial independence community phylogenetic structure community functional structure

Climate change threats to protected plants of China: an evaluation based on species distribution modeling

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Chinese Science Bulletin 2014年第34期59卷 4652-4659页

作者： Yinbo Zhang Yuzhuo Wang Minggang Zhang keping ma College of Environmental and Resource Sciences Shanxi University Institute of Loess Plateau Shanxi University State Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences

Climate change poses major new challenges to biodiversity conservation. Distribution ranges of species have been proven to be affected by climate *** the extent of protected species response to climate change can help formulate flexible conservation strategies to overcome the changing climate. Using species distribution modeling and high resolution climate data, we simulated current distribution patterns of 233 protected plants in China. Those patterns were then projected into future suitable habitats for each species under nine climate change scenarios, with no migration or full migration hypotheses. Under the most extreme climate change scenario(CGCM-B2a), we evaluated species extinction *** percent of protected plants are expected to lose more than 30 % of their current ranges. By calculating areal shifts, hotspots for emigrants, immigrants, and persistent species were identified under climate *** conservation strategies were addressed for thoseregions. Those strategies strongly depend on the migration types of species and sensitivity of the hotspots to changing climate. In hotspots for emigrants, the main conservation strategy is ex situ protection; protected species from these regions should be stored in seed banks or botanical gardens. For hotspots of immigrants, enough space should be maintained for new species, and some measures are necessary to assist dispersal. For hotspots of persistent species,more natural reserves are needed. We highlight related fields that can help conserve protected species in the future,such as conserving the soil seed bank and understanding of the effects of migration ability and interactions between protected species.

关键词：气候变化物种分布保护植物建模评估中国生物多样性保护土壤种子库

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Compensatory effects between Pinus massoniana and broadleaved tree species

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Journal of Plant Ecology 2010年第3期3卷 183-189页

作者： Qian Li Yu Liang Bo Tong Xiaojun Du keping ma State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of SciencesBeijing 10093China Graduate School of Chinese Academy of Sciences Beijing 100049China College of Life Science and Technology Central South University of Forestry and TechnologyChangsha 410004China

Aims Evaluation of the interaction intensity between masson pine(Pinus massoniana)and broadleaved trees will facilitate selecting tree combinations suitable for reforestation in abandoned sites in subtropical *** Pinus massoniana and seven broadleaved trees species were grown either in monoculture or in two-species *** of tree species was measured and inter-specific interactions were estimated using log response *** of homogeneity of variances was performed to compare the stability of biomass in the monoculture of the broadleaved trees with that in the *** Findings Our results showed that the direction and intensity of interactions between *** and the broadleaved trees varied from year to year and the identity of the broadleaved *** interactions were found between Camellia oleifera,Rhus chinensis and *** massoniana had competitive effects on Lithocarpus glaber,Cyclobalanopsis glauca and Elaeocarpus *** negative relations were found between biomass of *** and the broadleaved trees in the third year of the experiment,and the compensatory effects between *** and the broadleaved trees may be involved in stability maintenance in the multi-species forests in the subtropical *** results of homogeneity test of variances also showed that the biomass per pot in the mixture had significantly lower variances than that in the monoculture,suggesting that total biomass is more stable in the mixture than the monoculture.

关键词： competitive effects plant-plant interactions facilitative effects subtropical forest

Interactive effects of water and nitrogen addition on soil microbial communities in a semiarid steppe

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Journal of Plant Ecology 2012年第3期5卷 320-329页

作者： Jie Bi Naili Zhang Yu Liang Haijun Yang keping ma State Key Laboratory of Vegetation and Environmental Change Institute of BotanyThe Chinese Academy of SciencesNo.20 NanxincunXiangshanBeijing 100093China

Aims Better understanding of microbial compositional and physiological acclimation mechanisms is critical for predicting terrestrial ecosystem responses to global *** aim is to assess variations in soil microbial communities under future scenarios of changing precipitation and N deposition in a semiarid grassland of northern *** In order to explicitly estimate microbial responses,a field experiment with water and N addition was established in April 2005 and continuously conducted for 4 ***,soil microbial community composition and microbial C utilization potential were determined by phospholipid fatty acid(PLFA)and community-level physiological profiles,*** Findings Water addition had no effects on the PLFA concentrations of grampositive(GP)and negative bacteria(GN),total bacteria and ***,N addition caused significant reductions in the PLFA concentrations of GP,GN,total bacteria and fungi and thus decreased total PLFA of microbial ***,there were interactive effects of water and N addition on GN/GPand the ratio of fungal to bacterial PLFA(F/B).In addition,synergistic effects were found between water and nitrogen in affecting microbial C utilization potentials,which implies that microbial C utilization potentials tend to be enhanced when both N and water availability are ***,the microbial responses to water and N addition support our hypothesis that water and N addition may be combined together to affect microbial communities in the semiarid grassland.

关键词： microbial PLFA composition microbial C utilization potentials N addition water addition semiarid grassland

GeoSVM: an efficient and effective tool to predict species’ potential distributions

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Journal of Plant Ecology 2008年第2期1卷 143-145页

作者： Wenyun Zuo Ni Lao Yuying Geng keping ma State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of SciencesBeijing 100093China School of Software Tsinghua UniversityBeijing 100084China

Patterns of species distribution have long been one of the important topics of ecological study(Brown and Lomonilo 1998).In this brief communication,we introduce a new program—GeoSVM—that uses support vector machine(SVM)to predict species’potential distributions.(GeoSVM is now available at http://***/;wyzuo/***.)Here,we also give the results of our evaluation of the performance of *** used data for 30 species of Rhododendron in China as a case study to compare GeoSVM and Genetic Algorithm for Rule-Set Prediction(GARP),one of the most popular models to predict species’potential *** found that GeoSVM is more accurate and efficient than GARP.

关键词： GARP potential efficient

Spatial patterns and determinants of common root-associated fungi in a subtropical forest of China

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Journal of Plant Ecology 2019年第2期12卷 255-263页

作者： Abdul Shakoor Shan Li Fang Wang Tian Tian Yu Liang keping ma State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of Sciences20 NanxincunXiangshanBeijing 100093China University of Chinese Academy of Sciences Beijing 100049China Department of Evolutionary Biology and Environmental Studies University of ZurichCH-8057 ZurichSwitzerland

Aims Spatial patterns of fungal populations are affected by plant distribu-tion,abiotic factors,fungal dispersal ability and inter-species *** several studies have addressed spatial patterns of some mycorrhizal,saprotrophic and pathogenic fungi,the method based on fruit-body surveys is not efficient and unreliable to study the spa-tial pattern of root-associated fungal species because most fungi in plant roots do not have sporocarps and cannot be identified based only on morphological *** aims are(i)to determine the spa-tial pattern of common root-associated fungi;(ii)to evaluate whether the abundance and spatial pattern of root-associated fungi and cat-egories of fungi,reflect their biotic and abiotic niche *** About 828 soil cores were collected from a 24-ha plot in a sub-tropical forest and Illumina Miseq was carried out to determine fungal composition in root samples and spatial patterns of 1009 common fungal Operational Taxonomic Units(OTUs)were studied using point pattern ***(plant community composition)and abiotic niche constraints on the presence/abundance of a fun-gal OTU was assessed as the n-dimensional niche hypervolumes of biotic and abiotic *** Findings Our results showed that(i)most fungal OTUs were highly spa-tially aggregated at small scales(less than 30 m),but that the aggregated pattern decreased,while regular and random patterns increased,with the increasing distance;(ii)A significant positive correlation was found between fungal abundance and aggrega-tion intensity of fungal OTUs,indicating that the dominant fungi tended to be more aggregated in natural forests;(iii)Mean abun-dance and spatial aggregation intensity of ectomycorrhizal and pathogenic fungi were relatively higher than those of saprotrophic fungi,indicating that host plants may play an important role in determining spatial pattern of root-associated fungi;(iv)Spatial patterns of root-associated fungi depended o

关键词： spatial pattern fungal population subtropical forests high-throughput sequencing dispersal niche hypervolume