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森林生态系统（英文版）
北京林业大学
森林生态系统（英文版）

北京林业大学

尹伟仑

季刊

2095-6355

lihui@bjfu.edu.cn

010-62337915

100083

北京市海淀区清华东路35号林业大学148信箱

森林生态系统（英文版）/Journal Forest EcosystemsCSCDCSTPCD北大核心SCI
查看更多>>本刊是季刊，以简介林业科学方面的文章为主，包括科学研究及实验方面的科研论文，其主要对象是国内外林业科研企事业单位的科技人员及专家学者。
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    Subtropical forest macro-decomposers rapidly transfer litter carbon and nitrogen into soil mineral-associated organic matter

    Guoxiang NiuTao LiuZhen ZhaoXuebing Zhang...
    131-139页
    查看更多>>摘要：Background:Forest soils in tropical and subtropical areas store a significant amount of carbon.Recent frameworks to assess soil organic matter(SOM)dynamics under evolving global conditions suggest that dividing bulk SOM into particulate and mineral-associated organic matter(POM vs.MAOM)is a promising method for identifying how SOM contributes to reducing global warming.Soil macrofauna,earthworms,and millipedes have been found to play an important role in facilitating SOM processes.However,how these two co-existing macrofaunae impact the litter decomposition process and directly impact the formation of POM and MAOM remains unclear.Methods:Here,we set up a microcosm experiment,which consisted of 20 microcosms with four treatments:earthworm and litter addition(E),millipedes and litter addition(M),earthworm,millipedes,and litter addition(E+M),and control(only litter addition)in five replicates.The soil and litter were sterilized prior to beginning the incubation experiment to remove any existing microbes.After incubating the samples for 42 days,the litter properties(mass,C,and N contents),soil physicochemical properties,as well as the C and N contents,and POM and MAOM 13C abundance in the 0-5 and 5-10 cm soil layers were measured.Finally,the relative influences of soil physicochemical and microbial properties on the distribution of C and N in the soil fractions were analyzed.Results:The litter mass,C,and N associated with all four treatments significantly decreased after incubation,especially under treatment E+M(litter mass:-58.8％,litter C:-57.0％,litter N:-75.1％,respectively),while earthworm biomass significantly decreased under treatment E.Earthworm or millipede addition alone showed no significant effects on the organic carbon(OC)and total nitrogen(TN)content in the POM fraction,but joint addition of both significantly increased OC and TN regardless of soil depth.Importantly,all three macrofauna treatments increased the OC and TN content and decreased the 13C abundance in the MAOM fraction.More than 65％of the total variations in the distribution of OC and TN throughout the two fractions can be explained by a combination of soil physicochemical and microbial properties.Changes in the OC distribution in the 0-5 cm soil layer are likely due to a decrease in soil pH and an increase in arbuscular mycorrhizal fungi(AMF),while those in the 5-10 cm layer are probably caused by increases in soil exchangeable Ca and Mg,in addition to fungi and gram-negative(GN)bacteria.The observed TN distribution changes in the 0-5 cm soil likely resulted from a decrease in soil pH and increases in AMF,GN,and gram-negative(GP)bacteria,while TN distribution changes in the 5-10 cm soil could be explained by increases in exchangeable Mg and GN bacteria.Conclusions:The results indicate that the coexistence of earthworms and millipedes can accelerate the litter decomposition process and store more C in the MAOM fractions.This novel finding helps to unlock the processes by which complex SOM systems serve as C sinks in tropical forests and addresses the importance of soil mac-rofauna in maintaining C-neutral atmospheric conditions under global climate change.
      原文链接:
    • 万方数据
    • 维普

    Book review"Wattles:Australian Acacia species around the world"by David M.Richardson,Johannes J.Le Roux and Elizabete Marchante

    Klaus von Gadow
    140-141页
      原文链接:
    • 万方数据

    Competitive effect,but not competitive response,varies along a climatic gradient depending on tree species identity

    Teresa ValorLluís CollDavid I.ForresterHans Pretzsch...
    142-151页
    查看更多>>摘要：Background:Understanding the role of species identity in interactions among individuals is crucial for assessing the productivity and stability of mixed forests over time.However,there is limited knowledge concerning the variation in competitive effect and response of different species along climatic gradients.In this study,we investigated the importance of climate,tree size,and competition on the growth of three tree species:spruce(Picea abies),fir(Abies alba),and beech(Fagus sylvatica),and examined their competitive response and effect along a climatic gradient.Methods:We selected 39 plots distributed across the European mountains with records of the position and growth of 5,759 individuals.For each target species,models relating tree growth to tree size,climate and competition were proposed.Competition was modelled using a neighbourhood competition index that considered the effects of inter-and intraspecific competition on target trees.Competitive responses and effects were related to climate.Likelihood methods and information theory were used to select the best model.Results:Our findings revealed that competition had a greater impact on target species growth than tree size or climate.Climate did influence the competitive effects of neighbouring species,but it did not affect the target species'response to competition.The strength of competitive effects varied along the gradient,contingent on the identity of the interacting species.When the target species exhibited an intermediate competitive effect relative to neighbouring species,both higher inter-than intraspecific competitive effects and competition reduction occurred along the gradient.Notably,species competitive effects were most pronounced when the target species'growth was at its peak and weakest when growing conditions were far from their maximum.Conclusions:Climate modulates the effects of competition from neighbouring trees on the target tree and not the susceptibility of the target tree to competition.The modelling approach should be useful in future research to expand our knowledge of how competition modulates forest communities across environmental gradients.
      原文链接:
    • 万方数据

    Potential reduction in carbon fixation capacity under climate change in a Pinus koraiensis forest

    Dong Kook Woo
    152-161页
    查看更多>>摘要：There has been an increasing recognition of the crucial role of forests,responsible for sequestering atmospheric CO2,as a moral imperative for mitigating the pace of climate change.The complexity of evaluating climate change impacts on forest carbon and water dynamics lies in the diverse acclimations of forests to changing en-vironments.In this study,we assessed two of the most common acclimation traits,namely leaf area index and the maximum rate of carboxylation(Vcmax),to explore the potential acclimation pathways of Pinus koraiensis under climate change.We used a mechanistic and process-based ecohydrological model applied to a P.koraiensis forest in Mt.Taehwa,South Korea.We conducted numerical investigations into the impacts of(ⅰ)Shared Socioeconomic Pathways 2-4.5(SSP2-4.5)and 5-8.5(SSP5-8.5),(ⅱ)elevated atmospheric CO2 and temperature,and(ⅲ)ac-climations of leaf area index and Vcmax on the carbon and water dynamics of P.koraiensis.We found that there was a reduction in net primary productivity(NPP)under the SSP2-4.5 scenario,but not under SSP5-8.5,compared to the baseline,due to an imbalance between increases in atmospheric CO2 and temperature.A decrease in leaf area index and an increase in Vcmax of P.koraiensis were expected if acclimations were made to reduce its leaf tem-perature.Under such acclimation pathways,it would be expected that the well-known CO2 fertilizer effects on NPP would be attenuated.
      原文链接:
    • 万方数据
    • 维普

    Evaluating soil acidification risk and its effects on biodiversity-ecosystem multifunctionality relationships in the drylands of China

    Lan DuShengchuan TianNan ZhaoBin Zhang...
    162-171页
    查看更多>>摘要：Background:Soil acidification caused by anthropogenic activities may affect soil biochemical cycling,biodiversity,productivity,and multiple ecosystem-related functions in drylands.However,to date,such information is lacking to support this hypothesis.Methods:Based on a transect survey of 78 naturally assembled shrub communities,we calculated acid deposition flux in Northwest China and evaluated its likely ecological effects by testing three alternative hypotheses,namely:niche complementarity,mass ratio,and vegetation quantity hypotheses.Rao's quadratic entropy and community-weighted mean traits were employed to represent the complementary aspect of niche complementarity and mass ratio effects,respectively.Results:We observed that in the past four decades,the concentrations of exchangeable base cations in soil in Northwest China have decreased significantly to the extent of having faced the risk of depletion,whereas changes in the calcium carbonate content and pH of soil were not significant.Acid deposition primarily increased the aboveground biomass and shrub density in shrublands but had no significant effect on shrub richness and ecosystem multifunctionality(EMF),indicating that acid deposition had positive but weak ecological effects on dryland ecosystems.Community weighted mean of functional traits(representing the mass ratio hypothesis)correlated negatively with EMF,whereas both Rao's quadratic entropy(representing the niche complementarity hypothesis)and aboveground biomass(representing the vegetation quantity hypothesis)correlated positively but insignificantly with EMF.These biodiversity-EMF relationships highlight the fragility and instability of drylands relative to forest ecosystems.Conclusions:The findings from this study serve as important reference points to understand the risk of soil acidification in arid regions and its impacts on biodiversity-EMF relationships.
      原文链接:
    • 万方数据

    Enhancing wood efficiency through comprehensive wood flow analysis:Methodology and strategic insights

    Ruisheng WangPeer Haller
    172-183页
    查看更多>>摘要：Wood,an essential natural resource in human civilization,remains widely used despite advances in technology and material substitution.The surge in greenhouse gas emissions and environmental concerns accentuates the need for optimizing wood utilization.Material flow analysis is a powerful tool for tracking material flows and stocks,aiding resource management and environmental decision-making.However,the full extent of its meth-odological dimensions,particularly within the context of the wood supply chain,remains relatively unexplored.In this study,we delve into the existing literature on wood flow analysis,discussing its primary objectives,materials involved,temporal and spatial scales,data sources,units,and conversion factors.Additionally,data uncertainty,data reconciliation and crucial assumptions in material flow analysis are highlighted in this paper.Key findings reveal the significance of wood cascading and substitution effects by replacing non-wood materials,where they can reduce greenhouse gas emissions more than the natural carbon sink of forests and wood products.The im-mediate impact of short-term wood cascading might not be as robust as the substitution effect,with energy substitution showcasing better results than material substitution.However,it's crucial to note that these con-clusions could experience significant reversal from a long-term and global perspective.Strategies for improving wood efficiency involve maximizing material use,advancing construction technologies,extending product life-spans,promoting cascade use,and optimizing energy recovery processes.The study underscores the need for standardized approaches in wood flow analysis and emphasizes the potential of wood efficiency strategies in addressing environmental challenges.
      原文链接:
    • 万方数据
    • 维普

    Modelling analysis embodies drastic transition among global potential natural vegetations in face of changing climate

    Zhengchao RenLei LiuFang YinXiaoni Liu...
    184-192页
    查看更多>>摘要：Potential natural vegetation(PNV)is a valuable reference for ecosystem renovation and has garnered increasing attention worldwide.However,there is limited knowledge on the spatio-temporal distributions,transitional processes,and underlying mechanisms of global natural vegetation,particularly in the case of ongoing climate warming.In this study,we visualize the spatio-temporal pattern and inter-transition procedure of global PNV,analyse the shifting distances and directions of global PNV under the influence of climatic disturbance,and explore the mechanisms of global PNV in response to temperature and precipitation fluctuations.To achieve this,we utilize meteorological data,mainly temperature and precipitation,from six phases:the Last Inter-Glacial(LIG),the Last Glacial Maximum(LGM),the Mid Holocene(MH),the Present Day(PD),2030(2021-2040)and 2090(2081-2100),and employ a widely-accepted comprehensive and sequential classification system(CSCS)for global PNV classification.We find that the spatial patterns of five PNV groups(forest,shrubland,savanna,grassland and tundra)generally align with their respective ecotopes,although their distributions have shifted due to fluctuating temperature and precipitation.Notably,we observe an unexpected transition between tundra and savanna despite their geographical distance.The shifts in distance and direction of five PNV groups are mainly driven by temperature and precipitation,although there is heterogeneity among these shifts for each group.Indeed,the heterogeneity observed among different global PNV groups suggests that they may possess varying capacities to adjust to and withstand the impacts of changing climate.The spatio-temporal distributions,mutual transitions and shift tendencies of global PNV and its underlying mechanism in face of changing climate,as revealed in this study,can significantly contribute to the development of strategies for mitigating warming and promoting re-vegetation in degraded regions worldwide.
      原文链接:
    • 万方数据
    • 维普

    Plant life form determines spatiotemporal variability and climate response of plant seed rain in subtropical forests

    Yuyang XieZehao ShenXuejing WangLiu Yang...
    193-201页
    查看更多>>摘要：Spatiotemporal variation of seed rain reflects the response of plants in terms of their reproductive strategy to environmental gradients.In this study,we collected seeds from four sites in the Dalaoling Nature Reserve,Hubei Province,China,between 2011 and 2014,measured seed output and seed mass as seed rain traits,and compared their interannual and elevational variation.Then,we ran phylogenetic generalized mixed linear models(PGLMMs)to explore the effects of temperature and precipitation as well as interspecific differences on seed rain,and fitted the best regression models for seed rain vs.weather of canopy and understory species.The results showed no correlation between values of seed output and seed mass.However,the variation of the two traits showed significantly positive correlation.Seed output of canopy species generally decreased with increasing elevation,and showed significant interannual difference;however,seed output of understory species and seed mass for both canopy and understory species did not show consistency tends along elevational or in interannual variation.Seed output was significantly affected by temperature and precipitation,while seed mass mainly varied due to interspecific differences.Weather explained more the variation of the seed output of canopy species than that of understory species,with R2 values of 43.0％and 29.9％,respectively.These results suggested that canopy plants contributed more to the reproductive dynamics of the whole communities,and the canopy's buffer effect on the underground weakened the response of understory plants to weather variation in terms of their reproductive strategy.
      原文链接:
    • 万方数据
    • 维普

    Drivers of spatial structure in thinned forests

    Zichun WangYaoxiang LiGuangyu WangZheyu Zhang...
    202-213页
    查看更多>>摘要：Background:As is widely known,an increasing number of forest areas were managed to preserve and enhance the health of forest ecosystems.However,previous research on forest management has often overlooked the importance of structure-based.Aims:Our objectives were to define the direction of structure-based forest management.Subsequently,we investigated the relationships between forest structure and the regeneration,growth,and mortality of trees under different thinning treatments.Ultimately,the drivers of forest structural change were explored.Methods:On the basis of 92 sites selected from northeastern China,with different recovery time(from 1 to 15 years)and different thinning intensities(0-59.9％)since the last thinning.Principal component analysis(PCA)identified relationships among factors determining forest spatial structure.The structural equation model(SEM)was used to analyze the driving factors behind the changes in forest spatial structure after thinning.Results:Light thinning(0-20％trees removed)promoted forest regeneration,and heavy thinning(over 35％of trees removed)facilitated forest growth.However,only moderate thinning(20％-35％trees removed)created a reasonable spatial structure.While dead trees were clustered,and they were hardly affected by thinning intensity.Additionally,thinning intensity,recovery time,and altitude indirectly improve the spatial structure of the forest by influencing diameter at breast height(DBH)and canopy area.Conclusion:Creating larger DBH and canopy area through thinning will promote the formation of complex forest structures,which cultivates healthy and stable forests.
      原文链接:
    • 万方数据
    • 维普

    Early response of understory vegetation to the mass dieback of Norway spruce in the European lowland temperate forest

    Jan Marek MatuszkiewiczAndrzej N.AffekPiotr ZaniewskiEwa Ko?aczkowska...
    214-225页
    查看更多>>摘要：Spruce-dominated forests are commonly exposed to disturbances associated with mass occurrences of bark bee-tles.The dieback of trees triggers many physical and chemical processes in the ecosystem resulting in rapid changes in the vegetation of the lower forest layers.We aimed to determine the response of non-tree understory vegetation to the mass dieback of Norway spruce(Picea abies)in the first years after the disturbance caused by the European spruce bark beetle(Ips typographus)outbreak.Our study area was the Białowieża Biosphere Reserve covering the Polish part of the emblematic Białowieża Forest,in total 597 km2.The main data source comprised 3,900 phytosociological relevés(combined spring and summer campaigns)collected from 1,300 systematically distributed forest sites in 2016-2018-the peak years of the bark beetle outbreak.We found that the understory responded immediately to mass spruce dieback,with the most pronounced changes observed in the year of the disturbance and the subsequent year.Shade-tolerant forest species declined in the initial years following the mass spruce dieback,while hemicryptophytes,therophytes,light-demanding species associated with non-forest semi-natural communities,as well as water-demanding forest species,expanded.Oxalis acetosella,the most common understory species in the Białowieża Forest,showed a distinct fluctuation pattern,with strong short-term expansion right after spruce dieback,followed by a gradual decline over the next 3-4 years to a cover level 5 percentage points lower than before the disturbance.Thus,our study revealed that mass spruce dieback selec-tively affects individual herb species,and their responses can be directional and non-directional(fluctuation).Furthermore,we demonstrated that the mass dieback of spruce temporarily increases plant species diversity(α-diversity).
      原文链接:
    • 万方数据
    • 维普