CCPortal
Simulating response and effect mechanisms of global climate change on hydrological fluxes in tropical montane ecosystems
项目编号http://gepris.dfg.de/gepris/projekt/395606196
sProfessor Dr. LutzBreuer
项目主持机构Justus-Liebig-Universität Gießen
开始日期2018
英文摘要CurrentLandSurfaceModels(LSM)usedtoinvestigateglobalchangeeffectshaveshown(1)greatdeficienciesintherepresentationofwaterrelatedfeedbackmechanismsbetweenbiotic,climaticandhydrologicalprocessesand(2),oversimplifiedhydrologicalcomponentseffectingthewatermovementandtraitsofthevegetation.Therefore,theimpactofpreferentialandlateralflowonwaterandnutrientavailability,inter-speciesrootcompetitiononwateruptakeordynamicadaptationofplantstoclimateandlanduseconditionsarepoorlyrepresentedincurrentLSMs.TheseeffectsareespeciallypronouncedincomplexanddiverselandscapeslikethetropicalmountainrainforestsofsouthEcuador.ThiscastsdoubtontheabilityofcurrentLSMstomodelcorrectlyhowglobalchangemightaffectfuturebiomassproductionandwaterfluxesorshapevegetationstructuresinsuchecosystems.TheobjectivesofsubprojectA2aretoovercomethecurrentdeficienciesofhydrologicalroutinescommontomoststateoftheartLSMs.Inparticular,wewill(1)improvetherepresentationoflateralandpreferentialflowprocessesbyfollowingthedual-permeabilityapproachandaccountingforneighboringwaterflow,(2)incorporatestablewaterisotopetracingintheLSMforacomprehensivetestingofwaterfluxprocesses,and(3)testthenewlydevelopedwater-relatedcommunitytraitdynamicsfromthisandothersubprojectsoftheresearchunitRESPECT.ThegoalistocreateanewLSMwithasubstantiallyimproverepresentationofhydrologicalprocesses,whichallowsitsapplicationevenincomplexenvironmentslikethetropicalmountainrainforestsofsouthEcuador.Tothisend,wewilladaptandimprovethestateofthearthydrologicalCatchmentModellingFramework(CMF)(LSM-Hydro)andcoupleitwiththeothercomponentsoftheregionalizedLSMproposedbyRESPECT:theindividual-baseddynamicvegetationmodelLPJ-GUESS(LSM-Bio)andthemicrometeorologicalmodelCLM(LSM-Atmo).Forthoroughmodeltestingthemodellingeffortswillbecomplementwithavarietyofhydrologicalfieldexperimentstoinvestigatethewatercycleanditsfluxcomponents.Continuousmonitoringincludessoilmoistureandtemperaturebyautomaticdataloggers.Waterdynamicsandrootwateruptakewillbeinvestigatedbysamplingstablewaterisotopesfromdifferentsources,suchasthroughfallandfog,soilwaterfromvariousporeregions(bycryogenicextractionandsuctionplateswithdifferenttensions),andxylemwater(bycryogenicextraction).TheresultingLSMwillbeusedtoassesstheglobalchangeeffects(i.e.landuseandclimatechange)onthewatercycleandbiomassproductionofthissensitiveandclimaterelevantecosystemanditsanthropogenicreplacementsystems.
学科分类0603 - 生态学;06 - 生物科学
资助机构DE-DFG
项目类型Research Units
国家DE
语种英语
文献类型项目
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/69377
推荐引用方式
GB/T 7714
sProfessor Dr. LutzBreuer.Simulating response and effect mechanisms of global climate change on hydrological fluxes in tropical montane ecosystems.2018.
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