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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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