简介：

简介：Itisthemajorpurposeofthepapertopresenttheurbanland-bankingplanninganditsfunctionsofpromotingtheurbanland-bankingsystemandlanduseadministration.Theurbanland-bankingsystemhasthepotentialattributeofactingasanirreplaceableroleinurbanlandadministration,butitsunexpectedfunction-deviationhasimpacteditsimplementationeffectinChina.Afewcitygovernmentsareattemptingtodealwiththeproblembytheurbanland-bankingplanningwhichisexpectedtocontributetotheextensionofurbanfunction,optimizationofurbanpatterns,promotionofurbancorecompetitivenessandoverallconstructionoftheurbanvaluechain.Inthispaper,weprimarilydiscussthenecessity,functions,purposesandmaincontentsoftheurbanland-bankingplanning.Subsequently,theimplementingsituationoftheurbanland-bankingsysteminNan-jingisanalyzed,includingitsintegratedmode,spatio-temporalquantitativedistributionandmaincharacteristics.Finally,thebackgroundandtargetsincludingtotal,compositions,space,andregulationpointsaregraduallyintroducedtopresenttheNanjingland-bankingplanningversion2.

简介：

简介：JournalofChinesePharmaceuticalSciences,undertakenbySchoolofPharmaceuticalSciencesPekingUniversityanddirectedbyChinesePharmaceuticalAssociation,hasbeenindexedastheSourceJournalforChinesescientificandtechnicalpapersandcitationsstartingfromNovember,2010.TheSourceJournalforChinesescientificandtechnicalpapersandcitations,assessedinCJCR(ChineseS&TJournalCitationReports)byISTIC(InstituteofScientificandTechnicalInformationofChina),hasbecomethemostimportantsci-techjournalgroupwithhighacademicauthorityinChina.

简介：

简介：Ⅲ.ApplicationtrendofrareearthinironandsteelCurrently,pretreatmenttohotmetalandmoltensteelrefininginChinaarenotsopopularasindevelopedcountries.Thecontentofsulfurinlow-alloysteelinsomesmallandmediumsteelmillsinChinaisabout0.012%,whichisseveraltimeshigherthanthatino-

简介：Rareearthluminescentmaterialisoneofthemostimportantapplicationsectorsofrareearths.Chinaenjoystheexceptionaladvantagetodeveloprareearthluminescentmaterialforitsabundantrareearthresources.Afterseveraldecades'endeavor,China'srareearthluminescentmaterialindustry,headedbyrareearthphosphorforlampandLEDandhighefficientrareearthenergy-savinglightsource,hasbeengraduallydevelopedintoascaleindustry.Chinahasbecomeamajorproductionbaseofrareearthphosphorforlampsandrareearth

简介：

简介：Hebei省浓密地是有大多数的区域之一在中国的人口，最快的经济生长和很集中的陆地使用。陆地缺乏的矛盾与人口生长由高速度的经济开发削尖成为了一个严重问题，它限制了揭示的地区性的持续development.This纸基本进程，变化和严肃的地区性的差别在过去的50年期间根据可耕地的长系列的统计数据可耕地集中区域。根据提及的上面，影响可耕地的变化的主要驱动力被讨论。研究结果显示在最后50年期间有在可耕地区域的明显的波动减少的一个趋势。可耕地区域的变化从增加经历这个过程突然地减少轻轻地减少。在可耕地区域的变化的地区性的不同是很著名的，可耕地区域的严肃中心移动49.22km到东北。关于在可耕地的减少，直接驱动力包括农业结构和开垦的调整，并且间接驱动力在技术，经济兴趣和人口生长等等包括进展。

简介：Moderncitiesandtownsplayasthecentralplacesofwealthaccumulationforhuman-being,notonlyinthewaysofsettlementandmaterialconsumptionastheyweretraditionallyinancienttime,butalsointhewaysofsocialproductionandenvironmentalpollutionastheyaremostlytoday.Withsuchatransition,themeaningoflanduseforurbanizationhasbroadened.Accordingtotheruleofhumanecosystem,landuseformodernurbanizationcanbedividedintothreetypes:namely,thedirect,theindirectandtheinduced.However,itsstructurefollowsitsownwayofthedirect

简介：土壤营养素的土壤侵蚀和损失是在西南中国的关键环境威胁。土壤质量上的土地使用和它的影响继续加亮。现在的学习被进行在四种陆地使用类型下面比较土壤侵蚀(即，林地，放弃的农田，耕种，和草地)并且他们土壤上的效果器官的碳(SOC)，全部的氮(TN)和在达恩奇·莱克分水岭的Shuanglong集水的全部的磷(TP)，中国。处于侵蚀率有大变化，越过四块陆地的滋养的分布使用类型。侵蚀率由137C平均2在在非栽培的地点的侵蚀率上的耕种和放弃的农田下面的133tkm−2年−1，和草地显示出网免职。为所有地点，滋养的内容基本上与土壤深度减少了。与耕种和放弃的农田相比，草地在0–40厘米土壤层以内有最高的SOC和TN内容，由林地列在后面。在137C，SOC和TN被观察。侵蚀在耕种引起的滋养的损失最高。这些结果建议因为他们由土壤侵蚀减少营养素的损失的能力，那块草地和林地将为在长期的经期上的SOC和TN隐遁是有益的。我们的学习证明在红土壤区域的滋养的损失的那减小能通过管理得好的植被恢复措施被做。

简介：ClimateeffectsoflandusechangeinChinaassimulatedbyaregionalclimatemodel(RegCM2)areinvestigated.Themodelisnestedinone-waymodewithinaglobalcoupledatmosphere-oceanmodel(CSIROR21L9AOGCM).Twomulti-yearsimulations,onewithcurrentlanduseandtheotherwithpotentialvegetationcover,areconducted.Statisticallysignificantchangesofprecipitation,surfaceairtemperature,anddailymaximumanddailyminimumtemperatureareanalyzedbasedonthedifferencebetweenthetwosimulations.ThesimulatedeffectsoflandusechangeoverChinaincludeadecreaseofmeanannualprecipitationoverNorthwestChina,aregionwithaprevalenceofaridandsemi-aridareas;anincreaseofmeanannualsurfaoeairtemperatureoversomeareas;andadecreaseoftemperaturealongcoastalareas.Summermeandailymaximumtemperatureincreasesinmanylocations,whilewintermeandailyminimumtemperaturedecreasesinEastChinaandincreasesinNorthwestChina.TheuppersoilmoisturedecreasessignificantlyacrossChina.Theresultsindicatethatthesamelandusechangemaycausedifferentclimateeffectsindifferentregionsdependingonthesurroundingenvironmentandclimatecharacteristics.

简介：Basedonthedataofurbanlanduseobtainedbyremotesensinginterpretationfromaeroimagesin1986and2004,thespatialstructureofJinanisstudiedinthispaperwiththemethodofGeographicInformationSystem(GIS).Accordingtotheproportionoflandforresidence,industryandcommerce,theurbandistrictcanbedistinguishedintothreerings.ComparedwiththetraditionaltheoryoftheringstructureinWesterncoun-tries,theyhavemanydistinctivecharacteristics.Themainfunc-tionsoftheinnerringincluderesidence,businessandbanking,buttheproportionofresidentialland(morethan50%)isconsiderablyhigherthanthatofthecitiesinWesterncountries.Thelandproportionforresidenceandindustryintheintermediateringisequalonthewhole.Themainlandoftheoutsideringisforindustrialuse.From1986to2004,greatchangeshavetakenplaceonthelandproportionofdifferenttypesofuse.Intheinnerring,thelandforresidentialandindustrialusehasshrunkmuchwhilethelandforcommercialusehasincreased.Intheintermediatering,thechangesofthethreetypesoflandusewerenotverymuchandthetemporalvariationwasrelativelystable.Onthecontrary,thestructureintheoutsideringvariesacutely.Thoughmostofitisalsoforindustrialuse,theproportionofresidentiallandhasin-creasedmuch.Thethreeringscanalsobedividedintoseveralsectorsrespectively,accordingtothefunctionoflanduseclusters.Newtrendsandmechanismsofthechangesoflanduseimpactingtheurbanstructurewereproposedintheendofthepaper.

简介：Background:Monitoringthechangingpatternofvegetationacrossdiverselandscapesthroughremotesensingisinstrumentalinunderstandingtheinteractionsofhumanactivitiesandtheecologicalenvironment.LandusepatterninthestateofHimachalPradeshintheIndianWesternHimalayashasbeenundergoingrapidmodificationsduetochangingcroppingpatterns,risinganthropogenicpressureonforestsandgovernmentpolicies.WestudiedlandusechangeinSolanForestDivisionofHimachalPradeshtoassessspecieswiseareachangesintheforestsoftheregion.Methods:Thesupervisedclassification(Maximumlikelihood)ontwodatesofIRS(LISSIII)satellitedatawasperformedtoassesslandusechangeovertheperiod1998–2010.Results:Sevenlandusecategorieswereidentifiednamely,chirpine(Pinusroxburghii)forest,broadleavedforest,bamboo(Dendrocalamusstrictus)forest,banoak(Quercusleucotrichophora)forest,khair(Acaciacatechu)forest,culturableblankandcultivation.Theareaunderchirpine,cultivationandkhairforestsincreasedby191ha(4.55%),129ha(13.81%)and77ha(23.40%),whereastheareaunderbanoak,broadleaved,culturableblankandbamboodecreasedby181ha(16.58%),152ha(6.30%),71ha(2.72%)and7ha(0.47%),respectively.Conclusions:Thestudyrevealedadecreaseintheareaunderforestandculturableblankcategoriesandasimultaneousincreaseintheareaundercultivationprimarilyduetothelargescaleintroductionofhorticulturalcashcropsinthestate.Thecompositionofforestsalsoexhibitedsomemajorchanges,withanincreaseintheareaofcommerciallyimportantmonocultureplantationspeciessuchaspineandkhair,andadeclineintheareaofoak,broadleavedandbamboowhicharefacingahighanthropogenicpressureinmeetingthelivelihooddemandsofforestdependentcommunities.Intimedeforestation,forestdegradationandecologicalimbalancesduetothechangingforestspeciescompositionmayinflictirreversibledamagesuponunstableandfragilemountainzonessuchastheIndianH

简介：

简介：NowadaysthefasteconomicdevelopmenthasbroughtaboutseriousconflictsbetweenthelimitedlandresourcesandtheincreasinglanddemandinChuzhouCity.Thechangesoflandusestructurealsorestricteconomicdevelopmentandsocietyprogressinthisarea.Becausedifferentcitieshavedifferentfunctionallocalization,thecityareaandeachcounty(city)haveformedcharacteristiclandutilizationstructure.Itisofgreatsignificancetomakerationaluseoflandresourcesandensurethesustainableuseoflandresourcesbyanalyzingthevariationoflandusestructureinthecityareaandeachcounty(city)inChuzhouCity.BasedonthedataoflandusemodificationofChuzhouCityfrom1996to2005andadoptingthequantitativeanalysisoflandscapeecology,thispaperstudiesquantitativelythetemporaldivisionofregionallandusestructureanditsdynamicchanges.Theresultsindicatethat:(1)thismethodcanrevealthelawofthevariation;(2)thevariationoflandusestructureinChuzhouCity:increasingdiversification,evennessandheterogeneity;(3)theintensityofchangeinlandusefrom1996to2005inthecityappearedinthesequence:grassland>trafficland>gardenland>virginland>forestland>industrialandresidentialland>cultivatedland>otheragriculturalland>waterfacilityland;(4)therewereremarkabledifferencesbetweenthecityareaandeachcounty(city)intherelativechangeandthelandusestructurechangefrom1996to2005.ThispaperanalyzesthevariationoflandusestructureinChuzhouCity,andfinallyproposesrelatedcountermeasuresandsuggestions.

简介：从农场的本利的数据基于数据生产并且中国农业年鉴，这篇论文划分了紧张栽培了陆地使用进劳动紧张和大写的紧张，然后在bo分析了他们的时间、空间的变化

简介：

简介：Inthatorchardinginearly-to-midtwentiethcenturysoutheasternAustraliainvolveduseofcertainheavymetalandAscompoundsinregularpest-controlsprayprocedures,someinterestattachestothepossibilitythattheselandparcelsareunderlainbysoilswithabove-backgroundCu,PbandAslevels.InterpretationofLand-coverchangesallowedlandparcelspreviouslyoccupiedbyorchardstobeidentifiedinthe1950sthroughtime-seriesair-photos.Acomparisonofsoilanalysisresultsreferringtosoilsamplesfromcontrolsites,andfromlandparcelsformerlyoccupiedbyorchardists,showsthatcontamination(above-background)levelsofcationsinthepesticidescanbefoundinthetop6cmofformerorchardsoils.Itisclearthatdigitalspatialdatahandlingandculturally-informedairphotointerpretationhasaplaceinsoilcontaminationstudies,land-useplanning(withparticularreferencetore-development)andinadministrationofpublichealth.

简介：InJulyof1987,theSamplingSurveyofChildren’sSituationwasconductedin9provincesautonomousregionsofChina.Astratifiedtwo--stageclustersamplingplanwasdesignedforthesurvey.Thepaperpresentsthemethodsofstratification,selectingn=2PSU’s(cities/counties)withunequalprobabilitieswithoutreplacementineachstratumandselectingresidents/villagecommitteeineachsampledcity/county.Allformulaeofestimatingpopulationcharacteristics(especiallypopulationtotalsandtheratiosoftwototals),andestimatingvariancesofthoseestimatorsaregiven.Finally,weanalysetheprecisionofthesurveypreliminarilyfromtheresultofdataprocessing.