简介:Background:Monitoringforesthealthandbiomassforchangesovertimeintheglobalenvironmentrequirestheprovisionofcontinuoussatelliteimages.However,opticalimagesoflandsurfacesaregenerallycontaminatedwhencloudsarepresentorrainoccurs.Methods:Toestimatetheactualreflectanceoflandsurfacesmaskedbycloudsandpotentialrain,3DsimulationsbytheRAPIDradiativetransfermodelwereproposedandconductedonaforestfarmdominatedbybirchandlarchinGenheCity,DaXing’AnLingMountaininInnerMongolia,China.Thecanopyheightmodel(CHM)fromlidardatawereusedtoextractindividualtreestructures(location,height,crownwidth).Fieldmeasurementsrelatedtreeheighttodiameterofbreastheight(DBH),lowestbranchheightandleafareaindex(LAI).SeriesofLandsatimageswereusedtoclassifytreespeciesandlandcover.MODISLAIproductswereusedtoestimatetheLAIofindividualtrees.CombiningalltheseinputvariablestodriveRAPID,high-resolutionopticalremotesensingimagesweresimulatedandvalidatedwithavailablesatelliteimages.Results:Evaluationsonspatialtexture,spectralvaluesanddirectionalreflectancewereconductedtoshowcomparableresults.Conclusions:Thestudyprovidesaproof-of-conceptapproachtolinklidarandMODISdataintheparameterizationofRAPIDmodelsforhightemporalandspatialresolutionsofimagereconstructioninforestdominatedareas.
简介:植物14-3-3蛋白(GF14蛋白)是一类参与调节植物生命活动过程的小分子蛋白。本研究根据高羊茅转录组学测序获得的FaGF14-A和FaGF14-D基因片段,利用RACE技术得到高羊茅FaGF14-A和FaGF14-D基因的3’和5’cDNA序列,拼接后的FaGF14-A基因全长为1153bp,编码260个氨基酸;FaGF14-D基因全长为1291bp,编码266个氨基酸。生物信息学分析结果表明高羊茅FaGF14-A和FaGF14-D蛋白都具有典型的14-3-3蛋白结构域,包含9个保守的琢-螺旋及不保守的N-末端和C-末端,尤其与禾本科植物GF14蛋白具有较高的相似性,位于同一个进化支上,亲缘关系较近。