简介：TneglobalchangeofclimateanditsinfluenceonthecroppingsysteminChinahavebeeninvestigatedinthispaper.ItisfoundthatthetemperaturewasincreasedduringthelastdecadeandtheprecipitationdecreasedinnorthernChinaandincreasedinsouthernChinaduringthelast30years.Thesealevelhasbeenrisingbyabout21—26cminthecoastalareassouthof30°NinChinaduringthelast100years.Themostofresultsassimulatedbythegeneralcirculationmodels（GCMs）showthatthetemperatureincreasewouldamounttoabout2°—4°CinthemostpartsofChinaandprecipitationandsoilmoisturemightbedecreasedinnorthernChinaandincreasedinsourthernChinaduetodoublingofcarbondioxide（CO2）.TheeffectsofdoubledCO2ongrowthperiodandclimaticyieldcapabilityinChinahavebeenestimatedroughly.ItisshownthattheregionsofthegrowthperiodinChinawouldbemovednorthwardaboutfivedegreeslatitudeandtheclimaticyieldcapabilitymightbeincreasedbyabout10％inthemostpartsofChina.

简介：GPS可降水蒸汽(PWV)的可行性基于相关系数是0.94的雷送和GPSPWV的比较被讨论，RMS是4.0公里。在在2004的中国大陆的PWV变化是有在紧张的花键的gridding方法的graphed，根据在中国的外壳监视器观测站网的GPS数据，与相关气象学信息结合了。根据在这个国家的降雨的年度数量的分发，PWV的全部的趋势从东南沿海岸地区正在减少到西北内陆，这能被结束。PWV到达它的最大值在期间7月和8月，和最小在1月和2月期间被到达。根据PWV，从对low高，所有区域能作为东南沿海岸地区，内陆和台地被评价。

简介：Inthispaper,experimentresultsaboutEastAsiaclimatefromfiveCGCMsaredescribed.Theabilityofthemodelstosimulatepresentclimateandthesimulatedresponsetoincreasedcarbondioxidearebothcovered.Theresultsindicatethatallmodelsshowsubstantialchangesinclimatewhencarbondioxideconcentrationsaredoubled.Inparticular,thestrongsurfacewarmingathighlatitudesinwinterandthesignificantincreaseofsummerprecipitationinthemonsoonareaareproducedbyallmodels.RegionalevaluationresultsshowthatthesefiveCGCMsareparticularlygoodinsimulatingspatialdistributionofpresentclimate.ThemaincharacteristicsoftheseasonalmeanH500,SAT,MSLPfieldcanbesimulatedbymostCGCMs.ButtherearesignificantsystematicerrorsinSAT,MSLP,HS00fieldsinmostmodels.Onthewhole,DKRZOPYCisthebestinsimulatingthepresentclimateinEastAsia.

简介：2011年4月Nature针对气候变化推出了新专刊NatureClimateChange，该刊除了关注气候变化的科学问题，同时还重视气候变化中的人文研究，并特别设置了政策和市场观察栏目，以期更全面地介绍气候变化的研究进展和动向。本文以政策和市场观察栏目为重点，针对气候变化引发的多个社会热点问题，筛选相关文章分别就其前沿观点进行了简要介绍，以供读者参考。

简介：TheabruptchangesofzonalcirculationintheTibetanPlateau(TP)regionandtheirlikelycausesarederivedfromNationalCentersforEnvironmentalPredictionandtheNationalCenterforAtmosphericResearchreanalysisdata.ThezonalcirculationovertheTPabruptlychangedinsummer(31stpentad)andwinter(59thpentad).Theswitchfromsummertowintercirculationischaracterizedbyasuddennorthwardshiftofthewesterliesandthezero-velocitycurveanddisappearanceofthewesterlyjet.Thewinter-summerswitchischaracterizedbythereversepattern.Therefore,thecirculationconversionbetweensummerandwintercanbejudgedfromthepositionofthezero-velocitycurve.Curveslocatednorthof20°NindicatesummercirculationovertheTPandviceversa.TheabruptchangeofzonalcirculationismainlycausedbythethermodynamiceffectoftheTP.InJune,thiseffectcausesahugemonsooncirculationcellextendingfromtheTPtolowlatitudes.Consequently,thewesterliesjumptothenorthaseasterliesdevelop.Thisprocess,whichisenhancedbythestrongnortherlyinCoriolis,establishesthesummercirculation.InOctober,theHadleycellrecursasthethermaleffectsoftheTPdiminish,thewesterliesrushsouthward,andthewintercirculationisestablished.

简介：Becauseofquickdevelopmentofcities,theupdateofurbanGISdataisveryimportant.Changedetectionisthebaseofautomaticorsemi-automaticdataupdate.Onewayofchangedetectionsinurbanareaisbasedonoldandnewaerialimagesacquiredindifferentdurations.Thecorrespondingtheoryandexperimentsareintroducedandanalyzedinthispaper.Themainprocedureincludesfourstages.Thenewandoldimageshavetoberegisteredfirstly.Thenimagematching,basedonthemaximumcorrelationcoefficient,isperformedbetweenregisteredimagesafterthelowcontrastareashavebeenremoved.Theregionswithlowmatchingqualityareextractedascandidatechangedareas.Thirdly,theGaussian-Laplacianoperatorisusedtodetectedgesincandidatechangedareasonboththeregisteredimages,andthestraightlinesaredetectedbyHoughtransformation.Finally,thechangedhousesandroadscanbedetectedonthebasisofstraightlinematchingincandidatechangedareasbetweenregisteredimages.

简介：Theeffectsofverticalwindshearontropicalcyclone(TC)intensitychangeareexaminedbasedontheTCdatafromtheChinaMeteorologicalAdministrationandtheNCEPreanalysisdailydatafrom2001to2006.First,theinfluenceofwindshearbetweendifferentverticallevelsandaveragesindifferenthorizontalareasarecompared.Theresultsindicatethattheeffectofwindshearbetween200and850hPaaveragedwithina200-800kmannulusonTCintensitychangeislargerthananyothercalculatedverticalwindshear.High-latitudeandintenseTCstendtobelesssensitivetotheeffectsofVWSthanlow-latitudeandweakTCs.TCsexperiencetimelagsbetweentheimpositionoftheshearandtheweakeninginTCintensity.Averticalshearof8-9m/s(9-10m/s)wouldweakenTCintensitywithin60h(48h).Averticalsheargreaterthan10m/swouldweakenTCintensitywithin6h.Finally,astatisticalTCintensitypredictionschemeisdevelopedbyusingpartialleastsquaresregression,whichproducesskillfulintensityforecastswhenpotentialpredictorsincludefactorsrelatedtotheverticalwindshear.Analysisofthestandardizedregressioncoefficientsfurtherconfirmstheobtainedstatisticalresults.

简介：Onthebasisofstereoimageanalysis,thechangedetectionofman-madeobjectsinurbanareasisintroduced.Informationoftheheightofman-madeobjectscanbeappliedtoreinforcetheirchangedetection.BycomparisonbetweenthenewandoldDSMs,thechangedregionsareextracted.However,ouraimistodetectchangesofman-madeobjectsinurbanareaandfurtherinthepotentialareasbythemeansofline-featurematchingandgradientdirectionhistogram.TheexperimentsbasedontheaerialimagesfromJapanhaveproventhatthealgorithmiscorrectandefficient.

简介：Thispaperfocusesonaseriesofquantitativeanalysismodels,suchasgreyrelationalanalysismodel,hierarchicalclusteranalysismodel,principalcomponentanalysismodel,linearregressionmodelandelasticcoefficientmodel.Thesemodelsareusedtoanalyzethecomprehensivefunctionandeffectofdrivingforcessystemically,includinganalysisonfeatures,analysisfordifferentiatingtheprimaryandthesecondary,analysisoncomprehensiveeffects,analysisofelasticity,analysisofprediction.Theprimaryandcharacteristicfactorscanbeextractedbyanalysisoffeaturesandanalysisfordifferentiatingtheprimaryandthesecondary.Analysisonpredictionandelasticitycanpredicttheareaofcultivatedlandinthefutureandfindoutwhichfactorsexertgreatinfluenceonthecultivatedlandsupply.

简介：在这研究，空间分发和在东北中国的农业热和降水资源的变化趋势被分析在这个区域在agroclimatic资源上探索未来气候变化的影响。这研究基于输出从为从2005～2099的东北中国的地区性的气候模型系统的气象学的数据，在低、高的放射的强迫情形RCP4.5(低排放情形)和RCP8.5(高排放情形)下面是在IPCCAR5求婚了。在基线情形下面的模型产量，和RCP4.5和RCP8.5情形从1961～2010在东北中国从91个气象学的车站与观察数据被吸收执行分析。结果显示那：(1)到北方的来自南方的温度减少的空间分发，和温度被投射在所有区域增加，特别在一种高排放情形下面。在基线情形下面的平均年度温度是7.70整灭牥瑡牵?癥湥獴椠?桃湩?畤楲杮ㄠ吗？？

简介：

简介：大气、海洋的条件在西方的向北和平的热带气旋(TC)的生命周期的不同阶段期间被检验，与理解环境怎么影响在这个区域的TC的紧张变化的意愿。内在的海表面温度(SST)什么时候比26高，被发现增强通常发生

简介：从1992～2003基于non-radiance-calibratedDMSP/OLS夜间光形象，城市的陆地区域统计数据，气象学的数据；陆地地面温度数据由MODIS检索了；NOAA/AVHRR数据，在长江三角洲(YRD)的温度的地区性的气候的趋势上的都市化的影响被分析。结论如下：1)在YRD从1992～2003有一个重要都市化过程。Nanjing-Zhenjiang-Yangzhou的四城市簇，Suzhou-Wuxi-Changzhou，上海；Hangzhou海湾形成一条之字形城市带。在城市带的年平均气温的增加率是从1991～2005的0.280.44°C/10a，它比non-city-belt的远大。2)在不同季节的地区性的吝啬的气温上的城市的热岛(UHI)效果是summer>autumn>spring>winter。3)UHI紧张；城市的全部的人口对数美满地被相关。4)成为地区性的年平均气温的UHI效果从1961～2005增加了0.072°C，它从1991～2005的0.047°C，；年度最大的气温增加了0.162°C，它从1991～2005的0.083°C。所有这些显示当严肃的气候发信号，在从1991～2005的YRD的城市的扩大可以被考虑。

简介：期刊海藻的花蕾从沉积导致磷(P)的免职和版本进水。因此，当海藻的粒子开始安定到底部时，在季节的变化期间，在沉积理解行为和P的分发特征是最重要的钥匙管理Saemangeum水库的水质量。在这研究，水质量和沉积作文包括叶绿素的变化--一(Chl--一)并且P被调查决定在水和沉积之间的相互作用。学习首先集中了于影响P版本和沉积的矿化作用的海藻的粒子沉积。Chl--水里的集中在10月看了锋利的衰落水藻什么时候开始在秋天死了，并且后来，化学的氧需求(货到付款)的集中和在沉积的全部的P(TP)在11月由于腐烂的海藻的粒子的沉积增加了。在时间的一样的时期期间，在沉积的容易地简历可得到的P(敲击)在在哪儿的上面的区域显示出激烈的增加Chl--水的集中高。在顺序，高敲击地区在早冬季从上面的区域变了到更低的区域。敲击移动被认为从分解水藻在沉积的表面上从安定的overlying水的物理流动被发源。Saemangeum水库最近被构造；因此，除了可溶的反应的磷(SRP)的无机的P部分的所有类型在湖和沼泽地沉积层的底部表面上存在不是足够的显著地影响overlying水。在另一方面，从水藻的释放P对季节的变化不同、敏感。在结论，海藻的粒子沉积是重要的在Seamangeum水库从沉积表面层的使矿物化的无机的P控制超营养作用而非P版本。

简介：基于资源卫星介绍的遥感数据的解释，这份报纸说事实在Donghai岛的陆地使用区域，位于Zhanjiang的南方，广东省，因为象陆地开垦那样的人的活动，从1986～2010在25年里由576.71hm2膨胀了；同时，在土地的类型的大变化在岛上盖住发生了。在陆地使用的明确的变化在它的生态系统服务价值导致显著转变。因此，由在这使用Costanza方法，quantificationally在它的生态系统分析变化的纸在这个岛上满足；Costanza方法是每统一岛的区域显示出服务价值的一种计算技术。它从1986～2010被发现那，特别在最近的年里，由于在僵化，钢和港口工业，栽培土地的区域，树林，草地和沙漠的快速的发展在不同的度减少了，当时为住处的陆地，工业和交通建设和水和沼泽地的区域增加了。因而，与RMB547.57漠?潦的数字相比？

简介：西藏的高原是在中国的最重要的生态的障碍之一。解决统治在地区性的植被和气候变化之间的协会的内部关系和动力学是重要的理解并且保护地区性的生态系统。从2001～2010基于植被，温度和西藏的高原的降水数据，我们在过去的10年分析植被盖子的空间、时间的变化并且用实验直角的功能和单个值分解讨论植被反应到气候变化。我们的结果揭示下列：(1)植被盖子逐渐地从东南减少到西藏的高原的西北；(2)植被盖子在过去的10年在西藏的高原上增加了，主要在中央、东方的地区；并且(3)一种重要积极关系在在中央、南部的地区在全部区域并且与降水种季节和温度期间在植被盖子之间被建议。

简介：Basedontheanalysesonamplitudesofhistoricalvariationoftemperatureandprecipitationinthepast500yearsandlatest100years,accordingtotheregionalclimatechangescenariosforChinaestimatedbycompositeGCM,thepotentialimpactsofclimatechangeoncroppingsystemsinChinainfuturearesimulatedandassessedusingthecroppingsystemmodeldevelopmentspeciallyfortheChinesecroppingpatterns.Itisshownthatundertheprojectedfutureclimatechangeby2050themostpartsofthepresentdoublecroppingareawouldbereplacedbythedifferenttriplecroppingpatternswhilethecurrentdoublecroppingareawouldshifttowardsthecentralpartofthepresentsinglecroppingarea.Moreexplicitly,thenorthernboundaryoftriplecroppingareawouldshiftfromitscurrentborderattheChangjingRivertotheHuangheRiver,ashiftofmorethan5degreesoflatitude.Andtheshiftofmultiplecroppingareasleadstoasignificantdecreaseofsinglecroppingarea.Furthermore,consideringthechangesmentionedaboveincombinationwiththelikelynegativebalanceofprecipitationandevapotranspirationand,therefore,increaseofmoisturestress(i.e.lesswateravailability),aswellasthepossibleincreaseofheatstressdisasteranddecreaseofLGS(lengthofgrowingseason),thepotentialimplicationofclimatechangeforagricultureinChinaarealsoanalyzedroughlyinthispaper.Asaresult,however,itisstillverydifficulttoreachaspecificconclusionthatthefutureclimatechangewillhefavorableorunfavorabletofarminChinabecauseofthecomplicatedChinesefarmingpatterns,thecomplex-varioussocialandeconomicenvironmentofagriculturaldevelopmentand,especially,agreatscientificuncertaintiesintheinvestigation/predictionofclimatechange.

简介：

简介：ThecharacteristicsofMann-KendallRankStatisticsanditsapplicationsindetectingabruptchangeofclimatehavebeendescribed.Atthesametime,anewmethodisputforwardtodetecttheabruptchangeinvariance.

简介：Uptonow,detailedstrategiesandalgorithmsofautomaticchangedetectionforroadnetworksbasedonGIShavenotbeendiscussed.Thispaperdiscussestwodifferentstrategiesofautomaticchangedetec-tionforimageswithlowresolutionandhighresolutionusingoldGISdata,andpresentsabufferdetectionandtracingalgorithmfordetectingroadfromlow-resolutionimagesandanewprofiletracingalgorithmfordetectingroadfromhigh-resolutionimages.Forfeature-levelchangedetection(FL-CD),aso-calledbufferdetectionalgo-rithmisproposedtodetectchangesoffeatures.SomeideasandalgorithmsofusingGISpriorinformationandsomecontextinformationsuchassubstructuresofroadinhigh-resolutionimagestoassistroaddetectionandextractionaredescribedindetail.