简介：或许住惯了格子楼的你，早已想过要逃离钢筋水泥铸就的丛林，回归大自然，在树根上寻找一间属于自己的生态家园。

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简介：Theinitialassessmentoftravellersisaimedprimarilyatearlydetectionandtreatmentofmalaria(seepage32),whichcanberapidlyfatal.

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简介：拿Yucheng，在是的山东省的一个典型的农业县一个盒子，应用逻辑回归建模空间地识别影响农田的因素的这研究变化。用在2001和2009的高分辨率形象的二个阶段，学习在20012009获得了陆地使用和农田变化数据。农田被5.14%在时期减少，这被发现，主要由于到森林土地的农田变换并且布满建筑物土地，尽管森林土地的部分和闲置的土地被变换成农田。逻辑回归的结果显示那个地点，人口生长和农民收入是影响农田变换的主要因素，当土壤打字时并且支持弯曲是控制农田变化的分发的主要自然因素。地区性的差别和农田变化的时间空间的变量影响了逻辑回归模型的恰当的能力。巨鸟恰当的测试显示逻辑回归模型给了地区性的陆地使用变化的好解释。逻辑回归分析是一个好工具鉴别影响陆地使用的主要因素由确定改变每个因素的贡献。

简介：Fourenvironmemtalservicefunctionsofwheat,barleyandrapeecosystemareevaluatedinmaterialproduction,airadjustment(includingcarbondioxidefixationandoxygenreleaseinTibetanAutonomousRegion),waterconservation,andnutrientrecycling.Basedonittheeconomiclossofenvironmentduetodesertificationisvalued.TheresultsshowthattheservicefunctionsoffarmlandecosysteminTibetaretotallyvaluedat4436.2×106yuan,thevalueofeachservicefunctionisorderedas:airadjust...

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简介：陆地使用转变在社会经济的变化和革新驾驶的时间的某个时期上在某个区域的陆地使用形态学(主导的形态学和后退的形态学)指变化，并且它通常对应于社会经济的发展阶段的转变。在中国，农田和农村住房土地是陆地使用转变的二主要来源。这份报纸在中国分析农田和农村住房陆地转变的时间空间的联合特征，用高分辨率的LandsatTM(题目的Mapper)在2000和2008的数据，和从土地的部和中国的资源的数据。结果显示了那：(1)在20002008期间，农田的关联系数对农村住房土地变化是0.921，并且它证明农田的变化模式和农村住房土地是不协调的；(2)枪兵等级关联分析的结果证明那个农村住房陆地变化在农田和农村住房土地的相互的转变起了一个主要作用；并且(3)它出现一在20002008期间的在东南中国的在农田和农村住房陆地变化之间的高度的空间联合。一般来说，在中国的农田和农村住房陆地转变被社会经济、生物物理、经理的三维的开车因素在农村人口，农田和农村住房土地之中通过相互作用驾驶。然而，在中国的农田和农村住房陆地转变的时间空间的联合现象和机制大部分由于农村城市的开发的双轨道的结构。

简介：TheConversionofFarmlandtoForestsProject(CFF)isoneofthesixgreatforestecologicalProjectsinChinaandoneofthetengreatforestecologicalProjectsintheworld,rankingthethirdinoverallscaleandthefirstininvestment.CFFwasofficiallyinitiatedin2002,covering1897counties(county-levelcitiesanddistricts)in25provinces(autonomousregionsormunicipalities)ofChina.Thewholeinvestmentismorethan40billionUS$duringabout20years(from1999to2017),aimingtoformbetterecologysysteminfragileecologyregionsandeffectivelycontrolthesoilandwatererosionoftheYangtzeandtheYellowRiverandsandstormoftheThree-northRegionsinChina.TheexperimentalProjectofCFFbeganin1999,includingSichuan,ShanxiandGansuprovince,andthescopeofCFFwaswidenedlater.About1.16millionhaoffarmlandswereconvertedtoforestlands,andonemillionhaofplantationinmountainsandwastedlandswerecompletedin3years,involving20provinces(autonomousregionsandmunicipalities),400counties,27thousandvillages,5.7thousandtowns,4.1millionfarmfamiliesand16millionfarmers.

简介：或许住惯了格子楼的你，早已想过要逃离钢筋水泥铸就的丛林，回归大自然，在树根上寻找一间属于自己的生态家园。科学家们有望在未来十年内帮你实现这一愿望。

简介：Inthispaper,aimingattheproblemsofinsufficientsoilnutrientsandhighsaltcontentinWudicoredemonstrationareaofBohaiGranary,amonitoringandmanagementsystemofwater,fertilizerandsaltinsaline-alkalinefarmlandbasedonWebGISwasestablishedinordertomonitorandcontrolwater,fertilizerandsalt.BasedontheWindows.NETplatform,usingB/SmodeofoperationarchitectureandVisualStudio2010asthesoftwaredevelopmentenvironment,therelatedcomponentsinArcGISEnginewereinvokedbyArcGISAPIforSilverlirht,andtheWEBsystemwasdevelopedbyC#andXMALlanguage.Basedontheprincipleofwater,fertilizerandsaltbalance,amonitoringmodelandaregulationmodelforwater,saltandnutrientswereestablished.Intelligentanalysisandapplicationoffarmlandsoildatawererealized,andaprecisionagriculturesystemwithdataquery,earlywarningdiagnosis,monitoringandcontrolofwater,fertilizerandsaltwasformed.Andthe'waterandsalthomologue,watersupplyduetodemand,adequateandmultiple'irrigationschemeandthesaltandalkalireductionschemeof'synergisticconditioningofagentsandnutrients'andanutrientregulationplanfor'stabilizingnitrogen,increasingphosphorus,supplementingpotassiumatthediscretion'and'quick-actingcombiningslowrelease'wereputforward.Comparedwiththeperiodwithoutmonitoringandcontrolofwaterandsalt,theeffectofwatersavingandfertilizersavingwasimproved,andtheyieldofwheatandmaizewasalsosignificantlyincreased.Itprovidedguidanceforlocaluserstoincreasecropproductionandincome,andgreatlyimprovedtheutilizationofresourcesandgrainproduction.

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简介：InChina,farmlandpropertyrightscharacterizedbythehousehold-responsibilitysystem(HRS)havebeenimprovedsincethereformandopening-up.Therightsofuse,transferandgainbecomemorestable,authorizedandcomplete.Thispaperfirstlyanalyzestheimpactonfarmlandproductivity,whichcomesfromtheimprovementoffarmlandpropertyrights.Then,aneconomet-ricmodelisbuilttotesttheaboveanalysis.ItconcludesthatchangesofpropertyrightswillaffectfarmlandperformanceinChina.Intheend,somepolicyimplicationsareexploredforfur-therreforms.

简介：AimingatnaturalenvironmentconditionsinChina’swesternregions,theStateCouncilhasdecidedtoimplementnaturalenvironmentprotectionanddevelopmentwithmaincomponentsofnaturalforestprotection,afforestationandgrassgrowingonsuitablewastelandandsystematicallyreturningcultivatedlandtoforest(grass),thisisanimporta

简介：TheexcessiveexploitationandharvestingofforestresourcesduetoChina’seconomicconstructiondemandshavemadeitsforestresourcefallingintostructuralcrisis.Overthelastthreedecades,theareaofChina’snaturalforestsdecreasedby11millionha.Theareaofmaturedforestshasdecreasedfrom12millionhainearly50sto5.6millionhaatp

简介：Inordertodeterminethedegreeofreturning-to-zerooftemperaturesofdeformedcalcite,aseriesofrock-breakingexperimentsweredesignedtotestcalcite-richlimestonesamplesunderfixedconfiningpressuresanddifferenttemperatures.Theconsolidateddeformedsamplesintheirinitialstatewereobservedunderamicroscopeandthemicroscopicindicatorsindifferentzero-returningstateswereputforward,thusprovidingamicroscopicfoundationforevaluationofreliabilityofdatingvaluesofdeformationincalcite.Atlast,thecorrectionofdatingvaluesofdeformationforsampleswhosetemperaturehasnotyetreturnedtozeroisdiscussed.

简介：<正>JapanandChinaareneighborsthatcannotmoveawayfromeachother.Thus,it’squitenaturalthattherearequarrelsbetweenthembecausewearesoclosetoeachother.ThereisnootheroptionbetweenJapanandChinaexceptpeaceandfriendship.Ontheoccasionofthe3rdAnniversaryofthenormalizationofJapan-ChinadiplomaticrelationsonSeptember29,1975,inordertosolidifythe

简介：Thefarmlandtoforestprojecthasasignificantpromotingroleonecologicalcivilization;thefollow-upindustrydevelopmentisthekeytoconsolidatingachievementsofthefarmlandtoforestproject.Usingthesurveydataoffarmlandfarmers,thisarticleanalyzesthestatusanddevelopmentofthefollowupindustryinGuizhouprovince.Theresultsshowthatthefollow-upindustrydevelopmentqualityislow,thefollow-upindustrydevelopmentwillingnessisweak,thefollow-upindustrydevelopmentabilityispoor,andthefollow-upindustrysustaineddevelopmentisinsufficient.Furtheranalysisindicatesthatthefollow-upindustrydevelopmentlackoffunds,technicalandsystemofpolicysupport.Policyimplicationsarediscussedfocusingonimprovingpolicysystem,thefollow-upindustrydevelopmentstrategy,thefollow-upindustrydevelopmentplanning,anddevelopmentwiththecombinationofdevelopmentstrategyofGuizhouprovince.