基于BP神经网络的土壤养分空间插值-论文.pdf

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1、AgriculturalScience＆Technology，2014，15(3)：506—511Copyrightc2014，InformationInstituteofHAAS．AllrightsresemedAgriculturalInformationSpatialInterpolationofSoilNutrientsBasedonBPNeuraINetworkQingLI’，JiachangCHENG，YuemingHU1GuangzhouYuetuInformationTechnologyCo．，Ltd．，Guangzhou510640，China；

2、2．CollegeofInformatics，SouthChinaAgriculturalUniversity，Guangzhou510642．China；3．KeyLaboratoryofGuangdongProvinceLandUseandRemediation，Guangzhou510642，ChinaAbstractWithZengchengCity，GuangdongProvince，astheobjectofstudy，200基于BP神经网络的土壤养分solIsamplingpointswerecollectedforthespatialinterpo

3、lationpredictionofsolI空间插值propertiesbyusingKrigingmethodandBPneuraInetworkmethod．Aftercomparingtheinterpolationresultswiththemeasuredvalues，therootmeansquareerrorof李晴．程家昌．胡月明(1．广卅l粤信息thepredictiondatawasobtained．Theresultsshowedthattheinterpolationaccuracy技术有限公羽．广东广州5l0640：2．华南农、IOfBP

4、neuraInetworkwashigherthanthatofKrigingmethodunderthesamecir-大学信息学院．r’东广l¨l510642：3．r东竹Jcumstances．andtherewasnosmoothnessinusingBPneuraInetworkmethod地利用-j整治蘑点实验窜．广尔r‘州510642)whentherewerefewsamplepoints．Inaddition，withnorequirementonthedistri-butionofsampledata．BPneuraJnetworkmethodh

5、adstrongergeneralizationability摘要以广。东省增城巾-勾研究对象．采集丁thantraditionaljnterpolationmethod．whichwasanalternativeinterpolationmethod．令市内200个土壤样点．利川BP神经网络捕KeywordsBPneuraInetwork；SoiInutrients；SpatiaIprediction：Kriging值7J‘法对研究区土壤的氮和磷进行空间插值颁测．将插值结果与：壤样点寅测值进i对比．得到预测数据的误差均方根结果表明，BP神经网络的捕值精度tt兜‘

6、疆格高．存样点turaIfeaturesofvariationfunction．较少的情况下．BP冲经刚络的插值结果妃服However．itcannotwelIdescribetheSIotnpcmeethneto1f9p9r0esc．iswioitnhathgeridcuelvtuerl—er克里格插值方法的平滑妓啦、BP神经网络echnology，thespatialinter‘spatialdistributionofsolIproperties对捕值的样本数据的分布类型没有要求，比传polationofsolJpropertieshasgainedwith

7、non—linearcharaCteristicS．be—统捅值疗法有更强的泛化能力．是一种町替代moreandmorea~entionfrOmmanycauseitcannotmeettheprerequisite的捅值方法geographicalresearchers【’．Nomat·onhomogeneousstudyareaandus—关键词BP神经网络：_}壤养分：窀问预测：tertheinterpolationofsollwater[．oringdiferentsemivariogramfordifer-克里格捕值interpolationofsolI

8、nutri