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Phosphorus limitation on CO_(2)fertilization effect in tropical forests informed by a coupled biogeochemical model

Forest Ecosystems 2024年第4期11卷 502-515页

作者： Zhuonan Wang Hanqin Tian Shufen Pan Hao Shi Jia Yang Naishen Liang Latif Kalin Christopher Anderson Natural Resources Ecology Laboratory Colorado State UniversityFort CollinsCO80523USA Center for Earth System Science and Global Sustainability Schiller Institute for Integrated Science and SocietyBoston CollegeChestnut HillMAUSA Department of Earth and Environmental Sciences Boston CollegeChestnut HillMAUSA Department of Engineering Boston CollegeChestnut HillMAUSA Research Center for Eco-Environmental Sciences State Key Laboratory of Urban and Regional EcologyChinese Academy of SciencesBeijingChina Department of Natural Resource Ecology and Management Oklahoma State UniversityStillwaterOKUSA Center for Global Environmental Research(CGER) National Institute for Environmental Studies(NIES)TsukubaIbaraki305-8506Japan College of Forestry Wildlife and EnvironmentAuburn UniversityAuburnALUSA

tropical forests store more than half of the world's terrestrial carbon(C)pool and account for one-third of global net primary productivity(NPP).Many terrestrial biosphere models(TBMs)estimate increased productivity in tropical forests throughout the 21st century due to CO_(2)***,phosphorus(P)liaitations on vegetation photosynthesis and productivity could significantly reduce the CO_(2)fertilization ***,we used a carbon-nitrogen-phosphorus coupled model(Dynamic Land Ecosystem Model;DLEM-CNP)with heterogeneous maximum carboxylation rates to examine how P limitation has affected C fluxes in tropical forests *** model results showed that the inclusion of the P processes enhanced model performance in simulating ecosystem *** further compared the simulations from DLEM-CNP,DLEM-CN,and DLEMC and the results showed that the inclusion of P processes reduced the CO_(2)fertilization effect on gross primary production(GPP)by 25%and 45%,and net ecosystem production(NEP)by 28%and 41%,respectively,relative to CN-only and C-on ly *** the 1860s to the 2010s,the DLEM-CNP estimated that in tropical forests GPP increased by 17%,plant respiration(Ra)increased by 18%,ecosystem respiration(Rh)increased by 13%,NEP increased by 121%per unit area,***,factorial experiments with DLEM-CNP showed that the enhanced NPP benefiting from the CO_(2) fertilization effect had been offset by 135%due to deforestation from the 1860s to the *** study highlights the importance of P limitation on the C cycle and the weakened CO_(2)fertilization effect resulting from P limitation in tropical forests.

关键词： tropical forests Carbon-nitrogen-phosphorus model Phosphorus limitation CO_(2)fertilization effect Terrestfial ecosy stem model

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Plant community and soil properties drive arbuscular mycorrhizal fungal diversity:A case study in tropical forests

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Soil Ecology Letters 2021年第1期3卷 52-62页

作者： Jing Zhang Changxin Quan Lingling Ma Guowei Chu Zhanfeng Liu Xuli Tang Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems South China Botanical GardenChinese Academy of SciencesGuangzhou 510650China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China Center for Plant Ecology Core Botanical GardensChinese Academy of SciencesGuangzhou510650China

The mutual interdependence of plants and arbuscular mycorrhizal fungi(AMF)is important in carbon and mineral nutrient ***,an understanding of how AMF community assemblies vary in different forests and the underlying factors regulating AMF diversity in native tropical forests is largely *** explored the AMF community assembly and the underlying factors regulating AMF diversity in a young(YF)and an old-growth forest(OF)in a tropical *** results showed that a total of 53 AMF phylogroups(virtual taxa,VTs)were detected,38±1 in the OF and 34±1 in the YF through high-throughput sequencing of 18S rDNA,and AMF community composition was significantly different between the two forests.A structural equation model showed that the forest traits indirectly influenced AMF diversity via the plant community,soil properties and microbes,which explained 44.2%of the total observed variation in AMF *** diversity and biomass were the strongest predictors of AMF diversity,indicating that AMF diversity was dominantly regulated by biotic factors at our study *** study indicated that forest community traits have a predictable effect on the AMF community;plant community traits and soil properties are particularly important for determining AMF diversity in tropical forests.

关键词： Arbuscular mycorrhizal fungi High-throughput sequencing Microbes Plant community traits Soil properties tropical forests

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Biodiversity responses to insular fragmentation in Amazonia: Two decades of research in the Balbina Hydroelectric Reservoir

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Zoological Research(Diversity and Conservation) 2024年第2期1卷 106-116页

作者： Ana Filipa Palmeirim Maíra Benchimol Danielle Storck-Tonon Anderson S.Bueno Isabel L.Jones Gilmar Klein Carlos A.Peres CIBIO Research Centre of Biodiversity and Genetic ResourcesInBIO Associated LabVairão CampusUniversity of PortoVairão 4485-661Portugal BIOPOLIS Program in Genomics Biodiversity and Land PlanningCIBIOVairão CampusUniversity of PortoVairão 4485-661Portugal Laboratório de Ecologia AplicadaàConservação Universidade Estadual de Santa CruzIlhéusBahia 45662-900Brazil Programa de Pós-Graduação em Ambiente e Sistemas de Produção Agrícola(PPGASP) Universidade do Estado de Mato GrossoTangaráda SerraMato Grosso 78301-532Brazil Instituto Federal de Educação Ciência e Tecnologia FarroupilhaJúlio de CastilhosRio Grande do Sul 98130-000Brazil Biological and Environmental Sciences University of StirlingStirling FK94LAUK REBIO Uatumã/ICMBio Presidente FigueiredoAmazonas 69736-000Brazil Centre for Ecology Evolution and ConservationSchool of Environmental SciencesUniversity of East AngliaNorwich NR47TJUK JuruáInstitute ManausAmazonas 69057-060Brazil

As hydropower development expands across lowland tropical forests,flooding and concomitant insular fragmentation have become important threats to *** created insular landscapes serve as natural laboratories to investigate biodiversity responses to *** of these most iconic landscapes is the Balbina Hydroelectric Reservoir in Brazilian Amazonia,occupying>400000 ha and comprising>3500 forest ***,we synthesise the current knowledge on responses of a wide range of biological groups to insular fragmentation at *** has largely concentrated on a set of 22 islands and three mainland *** total,39 studies were conducted over nearly two decades,covering 17 vertebrate,invertebrate,and plant *** species responses varied according to taxonomic group,island area was consistently included and played a pivotal role in 66.7%of all studies examining patterns of species *** persistence was further affected by species traits,mostly related to species capacity to use/traverse the aquatic matrix or tolerate habitat degradation,as noted for species of vertebrates and orchid *** research is needed to improve our understanding of such effects on wider ecosystem *** Impact Assessments must account for changes in both the remaining habitat amount and configuration,and subsequent long-term species losses.

关键词： Habitat loss Hydropower dams Landbridge Local extinctions Species-area relationships Species diversity tropical forests

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A systematic review on the aboveground biomass and carbon stocks of Indian forest ecosystems

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Ecological Processes 2018年第1期7卷 165-176页

作者： Onkar Salunkhe P.K.Khare Richa Kumari M.L.Khan Laboratory of Ecology Department of BotanyDr.Hari Singh Gour UniversitySagarMadhya Pradesh 470003India

Background:tropical forests play a crucial role as source and sink in global carbon *** and other anthropogenic activities have led to degradation of forest land,and ultimately,it results in loss of biodiversity and increases concentration of CO_(2) in ***,there is urgent need to estimate regional and national level carbon stock for making forest-based policies and strategies for mitigation of CO_(2).Patchy and sporadic information is available on biomass and carbon stock of Indian *** paper presents a systematic review and comprehensive account of studies conducted in different forest types in ***:There are six major forest types found in India consisting of 15 groups and other subgroups with peculiar *** used by researchers for biomass/carbon stock estimation are destructive,nondestructive,tree inventories data,species-specific biomass estimation,and remote *** of estimates are based on nondestructive allometric equation *** showed positive correlation between tree species,diameter at breast height,and biomass/carbon ***-and medium-sized growing trees,invasive species,mixed forest,Agroforestry,and Agrosilviculture also play an important role in atmospheric carbon *** results of diverse forest carbon stock studies are broadly categorized in North,Central,and Southern *** review will be helpful for developing conservation policies and decision to increase carbon stock and also REDD+program for particular forest ***:The systematic literature review was carried out to gather and summarize information from different studies conducted on forest ecosystems and quantification methods used for biomass estimation and carbon stock in different forests types and states of *** general,great variability occurs in aboveground biomass and carbon stock on account of climatic and geographic *** obtain good and accurate

关键词： tropical forests Aboveground biomass Carbon stock

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Antioxidant,nutritional and anti-nutritional composition of Garcinia kola and Chrysophyllum albidum from rainforest ecosystem of Ondo State,Nigeria

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Journal of Forestry Research 2015年第2期26卷 417-424页

作者： Jonathan C.Onyekwelu Olufunmilayo Oyewale Bernd Stimm Reinhard Mosandl Department of Forestry and Wood Technology Federal University of Technology Institute of Silviculture Technische Universit?t Muenchen

tropical forests contain many tree species that have supplied edible fruits for *** fruits have contributed to human diets due to their richness in nutrients,vitamins,minerals,antioxidants and their low antinutrients *** investigated the antioxidant,nutritional and anti-nutritional composition of Garcinia kola and Chrysophyllum albidum fruit *** nutritional,anti-nutritional and antioxidant compositions differed depending on the fruit *** of fruit part,moisture content was high（72–93 %）.While the edible part（fruit pulp） of *** proved a better source of protein（4）,fibre（17 %） and fat（2 %）,the seed kernel was a better source of ash（2 %） and carbohydrate（15 %）.Carbohydrate（22 %）,protein（2 %）,fat（1 %） and fibre（3 %） were higher in *** seed kernel（edible part） than in the pulp and ***-nutrient content in *** and *** fruits was low,indicating that their consumption would not pose nutritional or health *** antioxidant compositions（especially phenolic content（10–21 mg g-1） and DPPH（1,1-diphenyl–2 picrylhydrazyl）（26–55 %）） of *** fruit pulp and *** seed kernel were high,implying that they could be good sources of natural antioxidants and could be used as supplements in food manufacturing.

关键词： Forest food trees Livelihood Antioxidant Nutritional supplement tropical forests Garcinia kola Chrysophyllum albidum Nigeria

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Key drivers of ecosystem recovery after disturbance in a neotropical forest Long-term lessons from the Paracou experiment, French Guiana

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Forest Ecosystems 2018年第1期5卷 13-27页

作者： bruno hérault camille piponiot cirad umr ecofog (agro paristech cnrs inra université des antillesuniversité de la guyane) campus agronomique97310 kouroufrench inphb (institut national polytechnique félix houphouet boigny) yamoussoukroivorycoast université de la guyane umrecofog(agro paristech cirad cnrs inra université des antilles) campus agronomique97310 kouroufrench guianafrance

Background： Natural disturbance is a fundamental component of the functioning of tropical rainforests let to natural dynamics, with tree mortality the driving force of forest renewal. With ongoing global （i.e. land-use and climate） changes, tropical forests are currently facing deep and rapid modifications in disturbance regimes that may hamper their recovering capacity so that developing robust predictive model able to predict ecosystem resilience and recovery becomes of primary importance for decision-making：（i） Do regenerating forests recover faster than mature forests given the same level of disturbance？（ii） is the local topography an important predictor of the post-disturbance forest trajectories？（iii） Is the community functional composition, assessed with community weighted-mean functional traits, a good predictor of carbon stock recovery？（iv） How important is the climate stress （seasonal drought and/or soil water saturation） in shaping the recovery trajectory？ Methods： Paracou is a large scale forest disturbance experiment set up in 1984 with nine 6.25 ha plots spanning on a large disturbance gradient where 15 to 60% of the initial forest ecosystem biomass were removed. More than 70,000 trees belonging to ca. 700 tree species have then been censused every 2 years up today. Using this unique dataset, we aim at deciphering the endogenous （forest structure and composition） and exogenous （local environment and climate stress） drivers of ecosystem recovery in time. To do so, we disentangle carbon recovery into demographic processes （recruitment, growth, mortality fluxes） and cohorts （recruited trees, survivors）. Results： Variations in the pre-disturbance forest structure or in local environment do not shape significantly the ecosystem recovery rates. Variations in the pre-disturbance forest composition and in the post-disturbance climate significantly change the forest recovery trajectory. Pioneer-rich forests have slower recovery rates than assemblages of lat

关键词： Ecosystem modeling tropical forests Carbon fluxes Ecological resilience Climate change Amazonia

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Microbial enzymatic stoichiometry and the acquisition of C, N,and P in soils under different land-use types in Braziliansemiarid

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Soil Ecology Letters 2023年第3期5卷 101-108页

作者： Erika Valente de Medeiros Érica de Oliveira Silva Gustavo Pereira Duda Mario Andrade Lira Junior Uemeson Josédos Santos Claude Hammecker Diogo Paes da Costa Fabio Fernando Araujo Arthur Prudêncio de Araujo Pereira Lucas William Mendes Ademir Sergio Ferreira Araujo Laboratory of Microbiology and Enzymology-LEMA Federal University of Agreste PernambucoGaranhuns 55292-270Brazil Federal Rural University of Pernambuco Rua Dom Manuel de Medeiross/nDois Irmãos52171-900RecifeBrazil Soil-Agrosystem-Hydrosystem Interaction Lab-LISAH Place Pierre Viala234060 MontpellierFrance Universidade do Oeste Paulista Presidente PrudenteSPBrazil Departamento de Ciência Do Solo Universidade Federal Do CearáFortalezaCEBrazil Center for Nuclear Energy in Agriculture University of Sao PauloPiracicabaSPBrazil Soil Quality Lab Agricultural Science CenterFederal University of PiauíTeresinaPI 60049-550Brazil

This study hypothesized that different land-use affect the microbial enzymatic stoichiometry and C-,N-,and P-acquisition in Brazilian semiarid ***,the enzymesβ-glucosidase(C-acquiring enzyme),urease(N-acquiring enzyme),and acid phosphatase(P-acquiring enzyme)were assessed in soil samples collected at 0−5 and 5−10 cm depth from a tropical dry forest,a protected area with Angico,a protected area with Ipê,scrub area,and an agricultural area with *** values of C-,N-,and P-acquiring enzymes were used to calculate the enzymatic C:N,C:P,and N:P *** values of C:P and N:P ratios were higher at 0−5 cm depth,while no significant variation,between soil depth,was observed for C:N *** values of C-and N-acquiring enzymes were higher at 0−5 cm in tropical dry forest areas and Angico forest,*** all land use types,the values of vectors L and A were higher than 1°and 45°,*** study showed that both land-use and soil depth influence the enzymatic stoichiometry,showing higher values of C-and N-acquiring enzymes in native and protected forests at soil surface.

关键词： C:N:P stoichiometry tropical forests soil depth Luvisols

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Winners and losers among tree species in Xishuangbanna: which traits are most important?

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Science Bulletin 2015年第10期60卷 916-924,I0007页

作者：赵美玲潘勃谭运洪 Richard T.Corlett Center for Integrative Conservation Xishuangbanna Tropical Botanical Garden Chinese Academy of Sciences University of Chinese Academy of Sciences

Massive human interference in natural ecosystems is resulting in a few ＂winners＂ and many ＂losers＂. However, the drivers of this winner-loser replacement pattern remain poorly understood. The aim of the study reported here was to identify winners among the tree flora of Xishuangbanna and compare their functional traits, specific leaf area （SLA）, wood density （WD）, seed mass （SM） and maximum height （MH） with previously identified losers （i.e., endangered species）. Fifteen native tree species were identified as winners from expert opinion, plot-based surveys of secondary forests and plotless surveys along roads. Twelve endangered tree species for which trait information could be obtained were used for comparison. Traits were compared with a Wilcoxon rank-sum test. Winners had significantly higher SLA, but lower WD. SM and MH did not differ significantly between groups. When the effects of phylogeny were removed by using phylogenetic generalized least squares, the difference in SLA became marginally insignificant. Principal component analysis resulted in two overlapping groups, showing that the selected traits were insufficient to distinguish winners and losers. Our results suggest that the ＂few winners, many losers＂ paradigm applies to trees in Xishuangbanna, with15 species accounting for most trees in the disturbed habitats sampled.

关键词： Human disturbance - Functional traits Phylogeny Conservation status tropical forests

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A New Function for Modelling Diameter Frequency Distribution in the tropical Rain Forest of Xishuangbanna,Southwest of China

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Forestry Studies in China 2003年第2期5卷 1-6页

作者： LuYuanchang LeiXiangdong JiangLei InstituteofForestResourceInformationTechniques ChineseAcademyofForestryBeijing100091P.R.China SouthwestForestryCollege Kunming650224P.R.China

Permanent plots in the montane tropical rain forests in Xishuangbanna, southwest China, were established, and different empirical models, based on observation data of these plots in 1992, were built to model diameter frequency distributions. The focus of this study is on predicting accuracy of stem number in the larger diameter classes, which is much more important than that of the smaller trees, from the view of forest management, and must be adequately considered in the modelling and estimate. There exist 3 traditional ways of modelling the diameter frequency distribution: the negative exponential function model, limiting line function model, and Weibull distribution model. In this study, a new model, named as the logarithmic J-shape function, together with the others, was experimented and was found as a more suitable model for modelling works in the tropical forests.

关键词： tropical forests diameter distribution modelling logarithmic J-shape function

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Carbon Sequestration in tropical Forest Stands: Its Control by Plant, Soil and Climatic Factors

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Open Journal of Forestry 2016年第2期6卷 59-71页

作者： K. A. J. M. Kuruppuarachchi Gamini Seneviratne Buddhika D. Madurapperuma Department of Botany The Open University of Sri Lanka Nawala Sri Lanka Microbial Biotechnology Unit Institute of Fundamental Studies Sri Lanka Department of Environmental Science and Management Humboldt State University Arcata CA USA

This study investigated the relationships amongst floristic, soil and climatic parameters and their control on carbon sequestration (CS) in two selected forest stands of Sri Lanka. Representative sampling sites were selected from the dry zone (Sigiriya forest sanctuary) and the wet zone (Udawattakele forest reserve) of Sri Lanka. Litter and soil samples were collected from each sampling site randomly in monthly intervals to cover an annual cycle. Plant biomass carbon stocks were calculated using standard biomass equations. Soil carbon stocks were determined by chemical oxidation and loss on ignition (LOI) methods. Principle Factor Analysis and multiple regression were used to quantify the relationships among the plants, soil and climatic variables. Plant biomass carbon stocks of the forests were governed by labile and stable C fractions, soil moisture, and plant diversity. The soil fulvic fraction acts as a focal point of interacting the variables such as soil N, free litter fraction (FLF) and humic fraction. During dry period in the dry zone forest, CS was governed by maximum relative humidity through an atmosphere-floor litter-soil continuum. Air temperature and FLF play a vital role in determining soil N. In addition, MacIntosh distance (U) diversity index showed a significant positive relationship with soil N. The dry zone forests are seen to be more climatic sensitive and vulnerable than the wet zone forests in Sri Lanka due to influence of more climatic parameters that govern the soil organic carbon fractions.

关键词： tropical forests Carbon Sequestration Soil Organic Carbon

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