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Influence of supraphysiological cortisol manipulation on predator avoidance behaviors and physiological responses to a predation threat in a wild marine teleost fish

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Integrative Zoology 2018年第2期13卷 206-218页

作者： Michael j.LAWRENCE Erika j.ELIASON jacob W.BROWNSCOMBE Kathleen M.GILMOUR john W.MANDELMAN Lee F.G.GUTOWSKY steven j.cooke Fish Ecology and Conservation Physiology Laboratory Department of BiologyCarleton UniversityOttawaOntarioCanada Department of Ecology Evolution&Marine BiologyUniversity of CaliforniaSanta BarbaraCaliforniaUSA Department of Biology University of OttawaOttawaOntarioCanada School for the Environment University of New EnglandBiddefordMaineUSA john H.Prescott Marine Laboratory New England AquariumBostonMassachusettsUSA

The stress axis in teleost fish attempts to maintain internal homeostasis in the face of allostatic ***,stress axis induction has been associated with a higher predation rate in *** date,the physiological and behavioral factors associated with this outcome are poorly *** purpose of the present study was to investigate the impact of experimental cortisol elevation on anti-predator behavior and physiological responses to predator *** hypothesized that semi-chronic cortisol elevation would increase susceptibility to predation by increasing stress-induced risk-taking *** test this hypothesis,schoolmaster snapper were given cocoa butter implants without cortisol(sham)or with cortisol(50 mg/kg body weight)and tethered to *** were exposed to either a lemon shark or control conditions for *** use and activity were recorded throughout and fish were terminally sampled for *** implantation,relative to shams,resulted in higher blood glucose and plasma cortisol concentrations with a lower plasma lactate *** exposure,relative to controls,elicited higher blood glucose and lactate concentrations but had no effect on plasma cortisol *** interactions were detected between shark exposure and cortisol treatment for any physiological *** metrics,including shelter use and activity,were unaffected by either cortisol implantation or shark *** responses to cortisol implantation likely resulted from enhanced gluconeogenic activity,whereas alterations under predator exposure may have been the product of catecholamine *** work should address context-specific influences of stress in mediating behavioral responses to predation.

关键词： homeostatic overload lemon shark predation refuging stress axis teleost physiology

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Bright spots for inland fish and fisheries to guide future hydropower development

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Water Biology and Security 2022年第1期1卷 81-99页

作者： William M.Twardek Ian G.Cowx Nicolas W.R.Lapointe Craig Paukert T.Douglas Beard Elena M.Bennett David Browne Andrew K.Carlson Keith D.Clarke Zeb Hogan Kai Lorenzen Abigail j.Lynch Peter B.McIntyre Paulo Pompeu Mark Rogers Alexis Sakas William W.Taylor Taylor D.Ward Zeenatul Basher steven j.cooke Fish Ecology and Conservation Physiology Laboratory Department of Biology and Institute for Environmental StudiesCarleton University1125 Colonel By DrOttawaON K1S 5B6Canada Fisheries Institute at the University of Hull Cottingham RdHullHU67RXUnited Kingdom Canadian Wildlife Federation 350 Michael Cowpland DrKanataONK2M 2W1Canada U.S.Geological Survey Missouri Cooperative Fish and Wildlife Research UnitUniversity of MissouriColumbiaMO65211United States U.S.Geological Survey National Climate Adaptation Science Center12201 Sunrise Valley DriveMS-516RestonVA20192United States McGill School of Environment McGill University845 Sherbrooke St WMontrealQuebec H3A 0G4Canada Princeton Environmental Institute and Department of Ecology and Evolutionary Biology Princeton UniversityM30 Guyot HallPrincetonNJ08544United States Ecological Sciences Section Science Branch Fisheries and Oceans CanadaCanadaPO Box/CP 5667St.John'sNewfoundland and LabradorA1C 5X1Canada University of Nevada Reno.4505 S Maryland PkwyLas VegasNV89154United States Fisheries and Aquatic Sciences School of Forest Resources and ConservationUniversity of Florida7922 NW 71st StreetGainesvilleFL32653United States Department of Natural Resources Cornell UniversityIthacaNY14853United States Departamento de Biologia Universidade Federal de LavrasAquenta SolLavrasState of Minas Gerais37200-900Brazil U.S.Geological Survey Tennessee Cooperative Fishery Research UnitTennessee tech UniversityCookevilleTN38505United States The Nature Conservancy 6375 Riverside DriveSuite 100DublinOH43017United States Michigan State University Department of Fisheries and WildlifeEast LansingMI48823United States

Hydropower production is one of the greatest threats to fluvial ecosystems and freshwater *** that we have entered the Anthropocene,there is an opportunity to reflect on what might constitute a‘sustainable’Anthropocene in the context of hydropower and riverine fish *** elements of existing practices that promote favorable social-ecological outcomes(i.e.,‘bright spots’)is timely given that there are plans to expand hydropower capacity in previously undammed rivers,intensify dam development in some of the world's largest river systems,and re-license existing *** approach this from a pragmatic perspective:for the foreseeable future,hydropower will likely remain an important source of renewable *** offer support for moving toward a more‘sustainable’Anthropocene,we provide syntheses of best practices during the siting,design,construction,operation,and compensation phases of hydropower development to minimize impacts on inland *** each phase,we offer positive examples(or what might be considered‘bright spots’)pertaining to some of the approaches described within our syntheses,acknowledging that these projects may not be viewed as without ecological and(or)societal detriment by all *** findings underscore the importance of protecting critical habitat and free-flowing river reaches through careful site selection and basinscale planning,infrastructure designs that minimize reservoir effects and facilitate safe passage of fish,construction of hydropower plants using best practices that minimize long-term damage,operating guidelines that mimic natural flow conditions,and compensation that is lasting,effective,inclusive,and locally *** from these‘bright spots’may require engagement of diverse stakeholders,professionals,and governments at scales that extend well beyond a given site,river,or even ***,environmental planning that integrates hydropower development into broader discussions

关键词： Migration Dams Salmon Hydroelectric Flow Socioecological Fish passage Barriers Ecosystems

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Nutritional epigenetics education improves diet and attitude of parents of children with autism or attention deficit/hyperactivity disorder

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World journal of Psychiatry 2024年第1期14卷 159-178页

作者： Renee j Dufault Katherine M Adler David O Carpenter steven G Gilbert Raquel A Crider College of Graduate Health Studies A.T.Still UniversityKirksvilleMO 63501United States Department of Research Food Ingredient and Health Research InstituteNaalehuHI 96772United States Department of Health Sciences University of New HavenWest HavenCT 06516United States Institute for Health and the Environment School of Public HealthState University of New YorkAlbanyNY 12222United States Department of Research Institute of Neurotoxicology and Neurological DisordersSeattleWA 98105United States Department of Statistics Food Ingredient and Health Research InstituteNaalehuHI 96772United States

BACKGROUND Unhealthy maternal diet leads to heavy metal exposures from the consumption of ultra-processed foods that may impact gene behavior across generations,creating conditions for the neurodevelopmental disorders known as autism and attention deficit/hyperactivity disorder(ADHD).Children with these disorders have difficulty metabolizing and excreting heavy metals from their bloodstream,and the severity of their symptoms correlates with the heavy metal levels measured in their *** may play a key role in helping parents reduce their ultra-processed food and dietary heavy metal intake by providing access to effective nutritional epigenetics *** To test the efficacy of nutritional epigenetics instruction in reducing parental ultra-processed food *** The study utilized a semi-randomized test and control group pretest-posttest pilot study design with participants recruited from parents having a learning-disabled child with autism or ***-two parents who met the inclusion criteria were randomly selected to serve in the test(n=11)or control(n=11)*** test group participated in the six-week online nutritional epigenetics tutorial,while the control group did *** efficacy of the nutritional epigenetics instruction was determined by measuring changes in parent diet and attitude using data derived from an online diet survey administered to the participants during the pre and post intervention *** intake scores were derived for both ultra-processed and whole/organic *** sample t-tests were conducted to determine any differences in mean diet scores within each *** There was a significant difference in the diet scores of the test group between the pre-and post-intervention *** parents in the test group significantly reduced their intake of ultra-processed foods with a preintervention diet score of 70(mean=5.385,SD=2.534)and a post-intervention diet score of 113(mean=8.692,SD=1.750)and the

关键词： Epigenomics Parenteral nutrition Autism Attention deficit/hyperactivity disorder Ultra-processed foods Heavy metals

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A glycine-rich nuclear effector VdCE51 of Verticillium dahliae suppresses plant immune responses by inhibiting the accumulation of GhTRXH2

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The Crop journal 2024年第4期12卷 1137-1149页

作者： Chi Li Yingqi Huang Wenjing Shang jieyin Chen steven j.Klosterman Krishna V.Subbarao jun Qin Xiaoping Hu State Key Laboratory of Crop Stress Resistance and High-Efficiency Production Key Laboratory of Plant Protection Resources and Pest Management of Ministry of EducationKey Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural AffairsCollege of Plant ProtectionNorthwest A&F UniversityYangling 712100ShaanxiChina State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China Western Agricultural Research Center Chinese Academy of Agricultural SciencesChangji 831100XinjiangChina Agricultural Research Service United States Department of AgricultureSalinasCA 93905USA Department of Plant Pathology University of CaliforniaDavisc/o United States Agricultural Research StationSalinasCA 93905USA

Verticillium dahliae is an important soil-borne fungal pathogen that causes great yield losses in many cash *** of this fungus are known to regulate plant immunity but the mechanism much remains unclear.A glycine-rich nuclear effector,VdCE51,was able to suppress immune responses in tobacco against Botrytis cinerea and Sclerotinia *** effector was a required factor for full virulence of ***,and its nuclear localization was a requisite for suppressing plant *** thioredoxin GhTRXH2,identified as a positive regulator of plant immunity,was a host target of *** findings show a virulence regulating mechanism whereby the secreted nuclear effector VdCE51 interferes with the transcription of PR genes,and the SA signaling pathway by inhibiting the accumulation of GhTRXH2,thus suppressing plant immunity.

关键词： Verticillium dahliae Plant immunity Effector Thioredoxin

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Meiosis:Recent Progress and New Opportunities

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journal of Genetics and Genomics 2014年第3期41卷 83-85页

作者： Hong Ma Howard j.cooke Qinghua Shi State Key Laboratory of Genetic Engineering Institute of Plant BiologySchool of Life SciencesFudan University CAS Institute of Physics Hefei National Laboratory for Physical Sciences at MicroscaleSchool of Life SciencesUniversity of Science and Technology of China MRC Human Genetics Unit and Institute of Genetics and Molecular Medicine University of Edinburgh

Sexual reproduction in diploid organisms requires the production of haploid gametes via the process of meiosis, in which a single round of DNA replication is followed by two consecutive cell divisions （or two nuclear divisions and one cytokinesis）. In the majority of known cases the proper segregation of the parental genome into gametes is accom- panied and facilitated by meiotic crossover formation, which contributes to physical association between homologous chromosomes and results in the generation of new combina- tions of alleles in the progeny. This is necessarily a complex and highly regulated process with multiple steps in a tight sequence, including exit from mitosis, DNA double strand break （DSB） formation, homology search, recombinational repair of DSBs and regulation of cohesion between homolo- gous chromosomes. The process of meiosis is astonishingly effective, even in mammals and flowering plants with extremely large genomes, in which this entails the manipula- tion of approximately twelve metres or even more of the replicated diploid DNA, on the order of 10^10 base pairs, with close to base pair accuracy. In plants, meiosis does not pro- duce gametes directly, but progenitors of haploid multicellular structures called gametophytes, which contain haploid cells that differentiate into gametes.

关键词： Meiosis

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Constraints on what controls millennial-scale basin-wide denudation across mountain belts, Asia

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Science China Earth Sciences 2024年

作者： Ye YANG steven A.BINNIE Sheng XU Cong-Qiang LIU Tibor j.DUNAI Institute of Surface-Earth System Science School of Earth System Science Tianjin University Institute of Geology and Mineralogy University of Cologne

The terrestrial cosmogenic nuclide dataset consisting of 123310Be measurements of fluvial sediment samples across the Asian mountain belts is used to constrain the influence of climate,tectonics and topography on Earth-surface denudation processes.10Be-derived basin-wide denudation rates were recalculated using a Monte Carlo simulation approach that relied on pixel-by-pixel production *** rates derived span four orders of magnitude,from 7.4±0.7 mm kyr-1（1σ;Central Tibetan Plateau） to 9,646+777744mm kyr-1（1σ;Southern Tibetan Plateau）,with a median of 186 mm *** our results with the traditional basin-wide production rate scaling model using a centroid coordinate and mean elevation,suggests that 96.6%of production rates will be underestimated using the latter method,especially for basins with a large *** bias between both methods reaches as large as 40%,caused by basin hypsometry and the nonlinear scaling of production rate with elevation and *** of the correlations between uniformly recalculated denudation rates and tectonics,climate,topography,and rock lithology will facilitate the extrapolation of denudation rates in unknown basins using available *** the perspective of local scales,precipitation coupled with neotectonics-driven landslides is likely the most influential factor in subtropical Taiwan Island,while topography primarily constrains surface denudation rates in the eastern Tibetan Plateau within a narrow range of *** highland regions with glacier coverage,such as the Pamir,central and southern Tibetan Plateau,high denudation rates are affected by glaciation,whereas lower precipitation and high erosion base level may limit river incision and evolving relief in the Central Tibetan *** contrast to local-scale findings highlighting a dominant factor constraining denudation rate,our large-scale quantitative analyses across the Asian mountain belts finds that （1） topographic metrics including

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Development,validation,and transportability of several machine-learned,non-exercise-based VO_(2max)prediction models for older adults

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journal of Sport and Health Science 2024年第5期13卷 611-620页

作者： Benjamin T.Schumacher Michael j.LaMonte Andrea Z.LaCroix Eleanor M.Simonsick steven P.Hooker Humberto Parada jr. john Bellettiere Arun Kumar Herbert Wertheim School of Public Health and Human Longevity Science University of California San DiegoLa JollaCA 92093USA Department of Epidemiology and Environmental Health School of Public Health and Health ProfessionsUniversity at BuffaloState University of New YorkBuffaloNY 14214USA Translational Gerontology Branch Intramural Research ProgramNational Institute on AgingNational Institutes of HealthBaltimoreMD 21225USA College of Health and Human Services San Diego State UniversitySan DiegoCA 92182USA Division of Epidemiology and Biostatistics School of Public HealthSan Diego State UniversitySan DiegoCA 92182USA University of California San Diego Moores Cancer Center La JollaCA 92093USA Computer Science and Engineering and Halicioglu Data Science Institute University of California San DiegoLa JollaCA 92093USA

Background:There exist few maximal oxygen uptake(VO_(2max))non-exercise-based prediction equations,fewer using machine learning(ML),and none specifically for older *** direct measurement of VO_(2max)is infeasible in large epidemiologic cohort studies,we sought to develop,validate,compare,and assess the transportability of several ML VO_(2max)prediction ***:The Baltimore Longitudinal Study of Aging(BLSA)participants with valid VO2_(max)tests were included(n=1080).Least absolute shrinkage and selection operator,linear-and tree-boosted extreme gradient boosting,random forest,and support vector machine(SVM)algorithms were trained to predict VO_(2max)*** developed these algorithms for:(a)the overall BLSA,(b)by sex,(c)using all BLSA variables,and(d)variables common in aging ***,we quantified the associations between measured and predicted VO_(2max)and ***:The age was 69.0±10.4 years(mean±SD)and the measured VO_(2max)was 21.6±5.9 mL/kg/*** absolute shrinkage and selection operator,linear-and tree-boosted extreme gradient boosting,random forest,and support vector machine yielded root mean squared errors of 3.4 mL/kg/min,3.6 mL/kg/min,3.4 mL/kg/min,3.6 mL/kg/min,and 3.5 mL/kg/min,*** quartiles of measured VO_(2max)showed an inverse gradient in mortality *** VO_(2max)variables yielded similar effect estimates but were not robust to ***:Measured VO_(2max)is a strong predictor of *** ML can improve the accuracy of prediction as compared to simpler approaches but estimates of association with mortality remain sensitive to *** studies should seek to reproduce these results so that VO_(2max),an important vital sign,can be more broadly studied as a modifiable target for promoting functional resiliency and healthy aging.

关键词： Cardiorespiratory fitness Prediction algorithms Epidemiology Mortality

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Hepatic angiotensin-converting enzyme 2 expression in metabolic dysfunction-associated steatotic liver disease and in patients with fatal COVID-19

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World journal of Gastroenterology 2024年第31期30卷 3705-3716页

作者： Angus K jacobs steven D Morley Kay Samuel Katie Morgan Lyndsey Boswell Timothy j Kendall David A Dorward jonathan A Fallowfield Peter C Hayes john N Plevris Hepatology Laboratory University of EdinburghEdinburgh EH164SBUnited Kingdom Scottish National Blood Transfusion Service Jack Copland CentreEdinburgh EH144BEUnited Kingdom Institute for Regeneration and Repair University of EdinburghEdinburgh EH164UUUnited Kingdom Edinburgh Pathology University of EdinburghEdinburgh EH164SBUnited Kingdom

BACKGROUND Metabolic dysfunction-associated steatotic liver disease(MASLD),characterised by hepatic lipid accumulation,causes inflammation and oxidative stress accompanied by cell damage and *** injury(LI)is also frequently reported in patients hospitalised with coronavirus disease 2019(COVID-19),while preexisting MASLD increases the risk of LI and the development of COVID-19-associated *** of injury at the cellular level remain unclear,but it may be significant that severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)which causes COVID-19,uses angiotensin-converting expression enzyme 2(ACE2),a key regulator of the‘anti-inflammatory’arm of the renin-angiotensin system,for viral attachment and host cell *** To determine if hepatic ACE2 levels are altered during progression of MASLD and in patients who died with severe *** ACE2 protein levels and localisation,and histological fibrosis and lipid droplet accumulation as markers of MASLD were determined in formalin-fixed liver tissue sections across the MASLD pathological spectrum(isolated hepatocellular steatosis,metabolic dysfunction-associated steatohepatitis(MASH)+/-fibrosis,end-stage cirrhosis)and in post-mortem tissues from patients who had died with severe COVID-19,using ACE2 immunohistochemistry and haematoxylin and eosin and picrosirius red staining of total collagen and lipid droplet areas,followed by quantification using machine learning-based image pixel *** ACE2 staining is primarily intracellular and concentrated in the cytoplasm of centrilobular hepatocytes and apical membranes of bile duct ***,ACE2 protein levels are elevated in non-fibrotic MASH compared to healthy controls but not in the progression to MASH with fibrosis and in ***2 protein levels and histological fibrosis are not associated,but ACE2 and liver lipid droplet content are significantly correlated across the MASLD *** A

关键词： Metabolic dysfunction-associated steatotic liver disease Angiotensin-converting enzyme 2 Immunohistochemistry COVID-19 COVID-19-associated cholangiopathy

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First principles insights into oxide/polymer composites: SrTiO_(3) /polyaniline/graphene

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journal of Materials Science & Technology 2023年第35期166卷 250-260页

作者： Nathan D.Wood joshua S.Tse jonathan M.Skelton David j.cooke Lisa j.Gillie Stephen C.Parker Marco Molinari Department of Chemical Sciences School of Applied SciencesUniversity of HuddersfieldHuddersfield HD13DHUK Department of Chemistry University of ManchesterManchester M139PLUK Department of Chemistry University of BathBath BA27AYUK

A detailed computational investigation,based on density functional theory,of the interaction of polyani-line(PANI)and graphene nanoribbons(GNRs)with SrTiO_(3) is *** adsorption of PANI in var-ious oxidation states and co-adsorption with GNRs is found to be thermodynamically ***-sorbed PANI introduces N and C 2p states into the SrTiO_(3) bandgap,while co-adsorption of PANI and GNRs leads to a bridging of the gap and semi-metallic behaviour,thus rendering the electrical properties highly sensitive to the loading of the GNRs/PANI in the *** the lattice dynamics of the composites predicts a 68-88%reduction in the lattice thermal conductivity due to reduced phonon group *** together,these findings provide insight into the growing number of experimental studies highlighting the enhanced thermoelectric performance of oxide-polymer composites and indicate co-adsorption with graphene as a facile direction for future research.

关键词： Polymer/inorganic composites Polyaniline/strontium titanate/graphene nanoribbon composites PANI/GNR/SrTiO_(3)composites Thermoelectric composites Electrical transport Thermal conductivity1 Introduction

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亚洲高山流域千年尺度地表剥蚀的制约因素

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中国科学:地球科学 2024年

作者：杨业 steven A.BINNIE 徐胜刘丛强 Tibor j.DUNAI 天津大学地球系统科学学院表层地球系统科学研究院 Institute of Geology and Mineralogy University of Cologne

本研究利用前人1233个亚洲高山流域沉积物宇宙成因核素10Be数据统一计算了地表剥蚀速率,以约束构造、气候和地形如何影响和控制地表剥蚀过程.基于高程数据逐个像元的核素产率,使用蒙特卡洛模拟方法重新计算了10Be流域剥蚀速率.剥蚀速率... 详细信息

本研究利用前人1233个亚洲高山流域沉积物宇宙成因核素10Be数据统一计算了地表剥蚀速率,以约束构造、气候和地形如何影响和控制地表剥蚀过程.基于高程数据逐个像元的核素产率,使用蒙特卡洛模拟方法重新计算了10Be流域剥蚀速率.剥蚀速率变化范围从（7.4±0.7）mm ka-1（1σ;青藏高原内部）到(9,646744+777)mm ka-1（1σ;青藏高原南部）跨四个数量级,中位数为186mm ka-1.逐个像元计算的核素产率与传统模型使用质心坐标和平均高程计算的核素产率相比,后者96.6%核素产率被低估,其中高程差越大越被低估.两种方法计算的产率偏差可达40%,究其原因可能是流域高程分布不均和核素产率随海拔和纬度呈非线性变化.通过量化地表剥蚀速率与构造、气候、地形和岩性之间的相关性将有助于推演未知流域的剥蚀速率.从局部小尺度分析,亚热带台湾岛地区剥蚀速率可能主要受降水和新构造驱动的山体滑坡影响,而降水变化范围较窄的青藏高原东部的剥蚀速率主要受控于地形;冰川覆盖的高原地区剥蚀速率受冰川作用影响,如帕米尔、青藏高原内部和南部地区;青藏高原内部剥蚀速率较低是因为较低的降水和较高的侵蚀基准面,从而限制了河流的下切和地表起伏度演化.与局部小尺度强调单一主控因素不同,本研究对亚洲高山流域宏观大尺度进行量化分析发现:（1）地形指标（包括坡度、地形起伏度和河道陡峭指数）与剥蚀速率在千年尺度呈现一致的幂函数关系,而非简单线性;（2）剥蚀速率与气候（包括与海拔相关的降水、温度和植被覆盖度）和新构造活动（地震核密度分布）呈近似幂函数关系,为次要控制因素;（3）岩性与剥蚀速率没有明显的相关性,可能受限于流域复杂的岩性混合和低分辨率的可侵蚀指数数据.

关键词： Be剥蚀速率气候变化构造抬升地形梯度亚洲高山流域

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