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functional traits of poplar leaves and fine roots responses to ozone pollution under soil nitrogen addition

Journal of Environmental Sciences 2022年第3期34卷 118-131页

作者： Pin Li Rongbin Yin Huimin Zhou Sheng Xu Zhaozhong Feng Research Center for Urban Forestry Key Laboratory for Forest Silviculture and Conservation of Ministry of EducationKey Laboratory for Silviculture and Forest Ecosystem Research in Arid-and Semi-arid Region of State Forestry AdministrationBeijing Forestry UniversityBeijing 100083China State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Key Laboratory of Forest Ecology and Management Institute of Applied EcologyChinese Academy of SciencesShenyang 110016China Institute of Ecology Key Laboratory of Agrometeorology of Jiangsu ProvinceSchool of Applied MeteorologyNanjing University of Information Science and TechnologyNanjing 210044China

Concurrent ground-level ozone(O_(3))pollution and anthropogenic nitrogen(N)deposition can markedly influence dynamics and productivity in *** studies evaluating the functional traits responses of rapid-turnover organs to O_(3) have specifically examined leaves,despite fine roots are another major source of soil carbon and nutrient input in forest *** elevated O_(3) levels impact fine root biomass and biochemistry remains to be *** study was to assess poplar leaf and fine root biomass and biochemistry responses to five different levels of O_(3) pollution,while additionally examining whether four levels of soil N supplementation were sufficient to alter the impact of O_(3) on these two *** O_(3) resulted in a more substantial reduction in fine root biomass than leafbiomass;relative to leaves,more biochemically-resistant components were present within fine root litter,which contained high concentrations of lignin,condensed tannins,and elevated C:N and lignin:N ratios that were associated with slower rates of litter *** contrast,leaves contained more labile components,including nonstructural carbohydrates and N,as well as a higher N:P *** O_(3) significantly reduced labile components and increased biochemically-resistant components in leaves,whereas they had minimal impact on fine root *** suggests that O_(3) pollution has the potential to delay leaf litter decomposition and associated nutrient cycling.N addition largely failed to affect the impact of elevated O_(3) levels on leaves or fine root chemistry,suggesting that soil N supplementation is not a suitable approach to combating the impact of O_(3) pollution on key functional traits of *** results indicate that the significant differences in the responses of leaves and fine roots to O_(3) pollution will result in marked changes in the relative belowground roles of these two litter sources within forest ecosystems,and such chang

关键词： Ozone pollution Nitrogen(N)input Fine roots Leaves functional traits Chemical complexity

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Mixing planting proportions in a plantation affects functional traits and biomass allocation of Cunninghamia lanceolata and Phoebe bournei seedlings

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Journal of Forestry Research 2022年第6期33卷 1793-1805页

作者： Meiqin Zha Youzhi Han Xiangrong Cheng Forestry College Shanxi Agriculture UniversityTaigu 030801People’s Republic of China East China Coastal Forest Ecosystem Long-Term Research Station Institute of Subtropical ForestryChinese Academy of ForestryHangzhou 311400People’s Republic of China

functional traits of trees are significantly associated with their adaptation strategies and ***,the effects of species composition and mixing proportion on the functional traits of trees grown in mixed plantations have not been studied *** this study,planting experiments(duration about seven months)were used to study variations in functional traits and biomass allocation of C unninghamia lanceolata(Lamb.)Hook and Phoebe bournei(Hemsley)Yang seedlings in five different mixes(0C:4P,1C:3P,1C:1P,3C:1P,and 4C:0P).Total leaf area per seedling increased in each species as its respective proportion in the mixture ***,the specific leaf area decreased for *** under low percent composition,and the specific leaf area for *** differed only marginally among the *** net photosynthetic rates of the two species were higher in the mixed plantings than in their corresponding monocultures,whereas the transpiration rate,stomatal conductance,and instantaneous water use efficiency were not different among the *** average root length and root surface area of *** and *** were higher in the mixed plantings than in their ***,root surface area of *** and both root length and surface area of *** increased significantly in the 1C:3P and 2C:2P mixed ***,stem,root,and total dry mass per seedling for *** decreased with its increasing percent composition in the mixed plantings,while these variables varied less for *** plasticity of biomass allocation was relatively low for both *** biomass per planting was higher in the mixed plantings than in the *** study indicates that species composition and mixing proportion can considerably affect the functional traits of *** and *** increase in productivity in the mixed plantings may be partially attributed to low rates of competition between the two species,an

关键词： Mixing proportion Tree species composition functional traits Interspecific relationship Intraspecific relationship

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Mismatch between species distribution and climatic niche optima in relation to functional traits

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Forest Ecosystems 2022年第6期9卷 813-822页

作者： Zhenghua Lian Juan Wang Chunyu Zhang Xiuhai Zhao Klaus von Gadow Research Center of Forest Management Engineering of State Forestry and Grassland Administration Beijing Forestry UniversityBeijing100083China Department of Forest Ecology School of Ecology and Nature ConservationBeijing Forestry UniversityBeijing100083China Faculty of Forestry and Forest Ecology Georg-August-University GottingenBüsgenweg 5D-37077GottingenGermany Department of Forest and Wood Science University of StellenboschStellenbosch7600South Africa

Background:Forecasts of climate change impacts on biodiversity often assume that the current geographical distributions of species match their niche ***,empirical evidence has challenged this assumption,suggesting a *** examine whether the mismatch is related to functional traits along temperature or precipitation ***:The observed distributions of 32 tree species in northeast China were evaluated to test this *** models were used to estimate the climatic niche optima,*** habitats where the highest species growth and density can be *** mismatch is defined as the difference between the actual species occurrence in an assumed niche optimum and the habitat with the highest probability of species ***’functional traits were used to explore the mechanisms that may have caused the ***:Contrasting these climatic niche optima with the observed species distributions,we found that the distribution-niche optima mismatch had high variability among species based on temperature and precipitation ***,these mismatches depended on functional traits associated with competition and migration lags only in temperature ***:We conclude that more relevant research is needed in the future to quantify the mismatch between species distribution and climatic niche optima,which may be crucial for future designs of forested landscapes,species conservation and dynamic forecasting of biodiversity under expected climate change.

关键词： Demography functional traits Mean annual temperature Mean annual precipitation Niche theory Species distribution

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Effects of Changing Precipitation and Warming on functional traits of Zonal Stipa Plants from Inner Mongolian Grassland

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Journal of Meteorological Research 2016年第3期30卷 412-425页

作者：吕晓敏周广胜王玉辉宋希亮 State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of SciencesBeijing 100093 University of Chinese Academy of Sciences Beijing 100049 Chinese Academy of Meteorological Sciences Beijing 100081

The mechanisms driving changes in dominant plant species are the key for understanding how grassland ecosystems respond to climate *** this study,we examined plant functional traits（morphological characteristics：plant height,leaf area,and leaf number;biomasses：aboveground,belowground,and total;and growth indices：root-to-shoot ratio,specific leaf area,and leaf mass ratio） of four zonal Stipa species（***,***,***,and ***） from Inner Mongolian grassland in response to warming（control,＋1.5,＋2.0,＋4.0,and ＋6.0℃）,changing precipitation（-30%,-15%,control,＋15%,and＋30%）,and their combined effects via climate control *** results showed that warming and changing precipitation had significant interactive effects,different from the accumulation of single-factor effects,on functional traits of Stipa *** correlation and sensitivity of different plant functional traits to temperature and precipitation *** the four species,the accumulation and variability of functional traits had greater partial correlation with precipitation than temperature,except for leaf number,leaf area,and specific leaf area,in ***,***,and *** ***,the accumulation and variability of plant height,aboveground biomass,and root-to-shoot ratio only had significant partial correlation with ***,the variability of morphological characteristics,biomasses,and some growth indices,was more sensitive to temperature than precipitation in ***,***,and ***—except for aboveground biomass and plant *** results reveal that precipitation is the key factor determining the growth and changes in plant functional traits in Stipa species,and that temperature mainly influences the quantitative fluctuations of the changes in functional traits.

关键词： precipitation change warming functional traits Stipa species Inner Mongolian grassland

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Bird functional traits affect seed dispersal patterns of China's endangered trees across different disturbed habitats

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Avian Research 2018年第2期9卷 144-149页

作者： Ning Li Zheng Wang Xinhai Li Zhaohui Li Institute of Applied Ecology Nanjing Xiaozhuang University Co-Innovation Center for Sustainable Forestry in Southern China College of Biology and Environmental Science Nanjing Forestry University Institute of Zoology Chinese Academy of Sciences

Background: The most dominant global threat to natural forests and their biodiversity is land-cover change, which has negative impacts on both species persistence and ecosystem functions. Land-cover change could alter animal behaviour and disrupt seed dispersal mutualisms. However, its effects on the role of bird functional traits in seed dispersal are not well ***: In the present study, we assessed the contributions of bird functional traits(behavioural traits: food habit, foraging pattern, foraging frequency, and habitat specialisation; morphological traits: weight, body length, wing length, and tail length) to both seed removal patterns and seed dispersal distances of an endangered and native tree species, Chinese yew(Taxus chinensis), in farmland, patchy habitat, and natural habitat, of southeast ***: We found that the ability of T. chinensis trees to form seed dispersal mutualisms with local birds varied across the different disturbed habitats. As a consequence of these mutualisms, more seeds were removed by birds from the patchy habitat than from the other two habitats. The number of seeds removed increased with bird foraging frequency. Moreover, the dispersal distance from the three habitats differed, and the longest dispersal distances were observed at both the patchy habitat and the farmland site. Seed dispersal distance increased with bird tail and wing ***: Our results highlight the importance of bird functional traits in the seed dispersal patterns of endangered trees across disturbed forest habitats, which should be considered for tree conservation and management.

关键词： functional traits Seed dispersal Frugivorous birds Behavioural traits Morphological traits

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functional traits influence plant survival depending on environmental contexts and life stages in an old-growth temperate forest

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Journal of Plant Ecology 2021年第5期14卷 981-994页

作者： Feng Jiang Guangze Jin Center for Ecological Research Northeast Forestry UniversityHarbin 150040China Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education Northeast Forestry UniversityHarbin 150040China

Aims functional traits are usually used to predict plant demographic rates without considering environmental ***,previous studies have consistently found that traits have low explanatory power for plant demographic *** hypothesized that accounting for environmental contexts instead of focusing on traits alone could improve our understanding of how traits influence plant demographic *** We used generalized linear mixed-effect models to analyse the effects of functional traits(related to leaf,stem,seed and whole plant),environmental gradients(soil nutrients,water and elevation)and their interactions on the survival dynamics of 14133 saplings and 3289 adults in a 9-ha old-growth temperate forest *** Findings We found that environmental variables,neighbour crowding and traits alone(*** effects)influenced plant ***,the effects of the latter two variables varied between saplings and *** trait–environment interactions influenced plant survival,such that resource conservative traits increased plant survival under harsh conditions but decreased survival under mild *** elevational gradient was the most important environmental factor driving these effects in our *** results support the hypothesis that functional traits influence plant survival depending on environmental contexts in local *** results also imply that one species with limited trait variation cannot occupy all environments,which can promote species diversity.

关键词： demographic rates functional traits local communities soil nutrients and water temperate forest trait-environment interaction

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Advancements in assessing soil health through functional traits and energy flow analysis of soil

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Soil Ecology Letters 2024年第2期6卷 21-30页

作者： Jingnan Zhang Shiyu Li Elly Morrien Neil B.McLaughlin Shixiu Zhang School of Life Sciences Zhengzhou UniversityZhengzhou 450001China State Key Laboratory of Black Soils Conservation and Utilization Northeast Institute of Geography and AgroecologyChineseAcademy of SciencesChangchun 130012China Key Laboratory of Mollisols Agroecology Northeast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun 130012China Institute of Biodiversity and Ecosystem Dynamics(IBED-ELD) Department of Ecosystem and Landscape DynamicsUniversity of AmsterdamScience Park 9041098 XHA msterdamThe Netherlands Ottawa Research and Development Centre Agriculture and Agri-Food CanadaOttawa K1AoC6Canada University of Chinese Academy of Sciences Bejing 100049China

We examined the development of soil nematodes ecological indices from the perspective off *** found that soil nematode energy flow analyses based on multiple functional traits quantify the dynamics of energy flow across multipletrophic levels to provide a more comprehensive *** conducted comparative analyses of the sensitivities of NMF and energy flow to verify that the energy flow analyses are more sensitive and have greater potential to reveal soil health and ecosystem *** in-depth studies of functional traits and energy flow analysis can help us achieve informed soil management practices,sustainable agriculture,*** Tess CT Nematode ecological index based on functional traits:MI El,S,BI,C1 NMF Bongen.1990 Ferrisetal,2001 Ferris,2010 energs low analysis of soil nematodes Compare thecological index(NMf)and Bacterivores(Ba)functional traits Energy flux Fungihores(Fn)rahn Soilnematodes latitude Lindicator Plant-parasites(PP)PF Energflus Soilhealth Omnivores-predators(oP)latitude Energy flow analysis of soil nematodes:By quantifying energy fux among trophic groups Barbes et al.,2014,2018 This paper examines the development of ecological indices for soil nematodes from the perspective of functional *** emphasizes the increasing significance of integrating multiple functional traits to achieve a more accurate assessment of soil *** indices based on life history strategies,feeding habits,and body size provide useful tools for assessing soil ***,these indices do not fully capture the dynamics ofenergyflow across multiple-trophic levels inthesoil foodweb,which is critical fora deeperunderstanding of the intrinsic properties of soil *** combining functional traits such as functional group,body size,feeding preference and metabolic rate,nematode energy flow analyses provide a more comprehensive *** approach establishes a direct correlation between changes

关键词： soil nematodes soil health nematodefoodweb functional traits energyflux

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Using intraspecific variation of functional traits and environmental factors to understand the formation of nestedness patterns of a local forest community

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Journal of Plant Ecology 2022年第6期15卷 1185-1198页

作者： Weitao Wang Yun Jiang Yongfa Chen Wenqi Luo Dong He Youshi Wang Chengjin Chu Buhang Li State Key Laboratory of Biocontrol School of Life Sciences/School of EcologySun Yat-sen UniversityGuangzhou 510275China Zhuhai Branch of State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal University at ZhuhaiZhuhai 519087China College of Resources and Environment Science Xinjiang UniversityUrumqi 830046China

The concept of nestedness originated from the field of biogeography decades ago and has been widely used in metacommunities and biological interaction networks,but there is still a lack of research within local ***,studies on nestedness usually rarely incorporate the functional traits of the species and the environmental characteristics of the *** this study,we constructed a species presence–absence matrix of a 50-ha forest plot,used the simulated annealing algorithm to reveal the maximum nested structure and further tested the significance of nestedness patterns by constructing null *** nested ranks were used to represent the orders of species and quadrats in the maximum nestedness *** regression tree analysis was used to reveal the relationships of nested ranks with environmental factors and functional *** found that the co-occurrence pattern of local plant communities was significantly *** regression tree results showed that the nested ranks of quadrats were determined by soil available phosphorus,soil water content,soil organic carbon and soil *** variation of functional traits,including leaf C,leaf pH,leaf dry matter content and maximum photosynthetic rate rather than means of functional traits,provided a better explanation for the formation of species’nested *** the causes of species and quadrats nested ranks provides novel lens and useful insights into ecological processes underlying nestedness,and further improves our knowledge of how local plant communities are assembled.

关键词： environmental factors functional traits nestedness spatial pattern subtropical forest

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Species abundance is jointly determined by functional traits and negative density dependence in a subtropical forest in southern China

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Journal of Plant Ecology 2021年第3期14卷 491-503页

作者： Weitao Wang Yun Jiang Buhang Li Nianxun Xi Yongfa Chen Dong He Jiayi Feng Chengjin Chu Department of Ecology State Key Laboratory of BiocontrolSchool of Life SciencesSun Yat-sen UniversityGuangzhou 510275China School of Ecological and Environmental Sciences East China Normal UniversityShanghai 200241China

Aims The factors affecting species abundance are a subject of ongoing debates in community *** studies have demonstrated that tree abundance is affected by plant functional traits and negative density dependence(NDD).However,few studies have focused on the combined effects of NDD and plant functional traits on species *** In this study,we used tree functional traits and two census data from a 50-ha forest dynamic plot in the Heishiding(HSD)Nature Reserve to explore the combined effects of functional traits and NDD on species *** hierarchical Bayesian models,we analyzed how neighbor densities affected the survival of saplings from 130 species and extracted posterior means of the coefficients to represent *** structural equation modeling(SEM)analysis was then applied to investigate the causal relationships among species functional traits,NDD and species *** Findings SEM showed that tree functional traits,including specific leaf area(SLA),leaf area(LA),leaf dry matter content(LDMC),leaf N content(LNC),maximum electron transport rate(ETRmax)and conspecific adult negative density dependence(CNDDadult),together explained 20%of the total variation in tree ***,SLA affected tree abundance both directly and indirectly via CNDDadult,with a totally negative influence on *** and LNC had only indirect effects mediated by CNDDadult on tree *** and LA had directly negative effects on abundance,but their direct connections with CNDDaduIt were not *** addition,CNDDadult was negatively correlated with species abundance,indicating that abundant species are under stronger *** these investigated traits,SLA contributed the most to the variation in CNDDaduIt and *** argued that our findings of trait-CNDDadult-abundance relationships can improve our understanding of the determinants of species commonness and rarity in forests.

关键词： tree abundance negative density dependence functional traits common species rare species

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functional leaf and size traits determine the photosynthetic response of 10 dryland species to warming

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Journal of Plant Ecology 2016年第6期9卷 773-783页

作者： Enrique Valencia JoséL.Quero Fernando T.Maestre Departamento de Biología y Geología Física y Química InorgánicaEscuela Superior de Ciencias Experimentales y TecnologíaUniversidad Rey Juan CarlosC/Tulipán s/n28933 MóstolesSpain Departamento de Ingeniería Forestal Escuela Técnica Superior de Ingeniería Agronómica y de MontesUniversidad de Córdoba Campus de Rabanales CrtaN-IV km.396C.P.14071 CórdobaSpain

Aims Relatively few studies so far have assessed how ongoing global warming will affect the photosynthetic performance of dryland plant *** evaluated the effects of warming on the photosynthetic rates of 10 species with contrasting functional attributes,and whether their functional traits modulated photosynthetic responses to *** A common garden experiment was conducted over 2 years with distinct environmental conditions(drier *** year).The experiment was designed as a randomized block design with two treatments:warming(control vs.~2.9℃ temperature increase)and species(Agropyron cristatum,Festuca ovina,Lygeum spartum,Medicago sativa,Plantago lanceolata,Psoralea bituminosa,Sanguisorba minor,Hedysarum coronarium,Dorycnium pentaphyllum and Phlomis herba-venti).We linked functional traits measurements with temporal variations in photosynthetic responses to *** Findings In the drier year,warming increased photosynthetic rates at the beginning of the growing season,suggesting a modification in the growing period(earlier spring).In the wetter year,functional traits modulated photosynthetic responses to *** species with shorter leaves(***)had higher photosynthetic rates under warming compared to smaller species with larger leaves(***).Our results highlight the importance of(i)studying photosynthetic responses along different years and(ii)considering functional traits when evaluating photosynthetic responses to climate change,particularly in stressful environments such as drylands.

关键词： photosynthesis climate change Mediterranean functional traits open top chambers

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