资源描述：
《基于某某某i某时域产品的松嫩平原耕地npp变化趋势分析与产能初步评估》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、AbstractIntherapidlyexpandingglobalpopulation,theburningoffossilfuels,theroleofhumansontheenvironmentcontinuestoincrease,andbroughtglobalwarming,theoccurrenceofextremeweatherevents,sealevelriseandotherglobalissuessuchbackground,terrestrialcarboncyclep
2、laysavitalroleinthesemajorglobalchangeissues,carbonstorageinterrestrialecosystemsanditschangehasaveryimportantroleinthechangesintheglobalcarboncycleandCO2concentrations,andischaracterizedterrestrialvegetationNPPcarbonsequestrationcapacityoftheEarth'sa
3、bilitytosupporttheassessmentandevaluationofglobalterrestrialecosystemsandsustainabledevelopmentareofgreatsignificance.AsoneoftheSongnenPlainChina'smajorgrainproducingareas,themaintypesofarablelandintheregion,thevegetationofarablelandcarboncycleplaysan
4、importantroleinChina'sterrestrialecosystems.Inthecaseofhumanlandusecontinuestogrowintheimage,aquantitativeanalysisofspatialandtemporalchangesintheNPPareaofarableland,vegetationchangescomewithintheregionoffarmlandproductivitytrendscanberationaluseofara
5、blelandforfuturenationalfoodproductionprovidesanimportantscientificbasis,onfoodsecurityhasanimportantsignificanceInthispaper,thenortheasternregionoffarmlandSongnenPlainastheresearchobject,SongnenPlainMODISMOD17A2GPPtime-domaindataprovidedbyNASA,theSon
6、gnenPlainTMbasedvectordatasuchasvisualinterpretationbasedonresearchdata,geographicinformationsystemsandremotesensingtechniques,thewholedynamicchangesbasedontheSongnenPlainpixeltimeseriesforanalysisanddrawSongnenPlainNPPtrendschart.Thenselectthetrendis
7、moreobviouschangesinregionalfoodproductionintheregionandcorrelationanalysiswasdone,thatnationalfoodproductionandfoodsecurity,provideanimportantbasis.Articleexperimentsfocusedonthefollowing:(1)vectorlandSongnenPlainin2000and2010visualinterpretationofTM
8、imagesusingvectordataclassificationoverlayoperations,madebetween2000and2010landtypeisalwayscultivatedarablesector,thatarticleswerebasedonarableland万方数据NPPstudiesprovideabasis.(2)SelecttheSongnenPlain,conductedannuallyfrom2000to201025MODISGPPda
