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1、棉花學(xué)報CottonScience2014袁26淵6冤院555~562利用光譜-鹽分指數(shù)監(jiān)測棉田土壤鹽分1,21,2*1,231331,2李靜袁王克如袁李少昆袁陳兵袁肖春花袁王瓊袁王方永袁李栓明袁41,21,2賴軍臣袁孫亞玲袁張國強(qiáng)淵1.石河子大學(xué)綠洲生態(tài)農(nóng)業(yè)重點(diǎn)實(shí)驗(yàn)室袁新疆石河子832003曰2.中國農(nóng)業(yè)科學(xué)院作物科學(xué)研究所/農(nóng)業(yè)部作物生理生態(tài)重點(diǎn)實(shí)驗(yàn)室袁北京100081曰3.新疆農(nóng)墾科學(xué)院棉花研究所袁新疆石河子832003曰4.新疆生產(chǎn)建設(shè)兵團(tuán)第六師農(nóng)業(yè)局袁新疆五家渠市831300冤摘要院通過對棉田土壤鹽分的光譜反演研究袁為土壤鹽漬化遙感動態(tài)監(jiān)測提供可能遙
2、利用ASD地物光譜儀測定新疆兵團(tuán)第六師共青團(tuán)農(nóng)場鹽漬化棉田土壤光譜袁結(jié)合土壤化學(xué)參數(shù)分析確定反映棉田土壤鹽漬化程度的敏感波段袁構(gòu)建最佳鹽分指數(shù)對棉田土壤鹽分進(jìn)行監(jiān)測遙結(jié)果表明袁隨鹽漬化程度淵0.084～1.659g窯kg-1冤的加重袁土壤光譜反射率呈上升趨勢袁在近紅外區(qū)(1350～1850nm)差異尤為顯著袁該波段范圍光譜反射率與土壤鹽分呈極顯著相關(guān)淵=0.880**冤袁且對土壤鹽分響應(yīng)敏感袁為識別鹽漬化土壤的敏感波段曰選擇鹽漬化光譜敏感波段建立了鹽分指數(shù)SI1袁BI袁SI2袁NDSI袁SI3監(jiān)測棉田土壤鹽漬化的模型袁其中SI1和BI的RMSE分別為0.151
3、和0.149堯RE為7.5%和6.3%袁預(yù)測能力強(qiáng)袁可推薦為棉田土壤鹽分監(jiān)測的最佳模型遙關(guān)鍵詞院棉田曰光譜-鹽分指數(shù)曰土壤鹽漬化曰監(jiān)測中圖分類號院S562.01文獻(xiàn)標(biāo)志碼院A文章編號院1002-7807淵2014冤06-0555-081,21,2*1,23*133LiJing,WangKeru,LiShaokun,ChenBing,XiaoChunhua,WangQiong,WangFangyong,Li1,241,21,2Shuanming,LaiJunchen,SunYaling,ZhangGuoqiang(1.832003;2.100081,;3.832
4、003,;4.831300,)Weconductedremotesensingdynamicmonitoringofsoilsalinizationbysoilsalt-spectruminversionincottonfields.AnASDspectrometerwasusedtomeasurethecottonsoilspectraintheCommunistYouthLeaguefarmofthesixthdivisionoftheXinjiangProductionandConstructionCorps.Themostsensitivewaveba
5、ndformeasuringthesoilsalinizationdegreewasdeterminedbycombinedanalysisofspectralandsoilchemistryparameters,andthebestsaltindexformonitoringsoilsaltcon-學(xué)報頁腳tentincottonfieldswasdetermined.Theresultsshowedthatsoilspectralreflectanceincreased(0.084-1.659g窯kg-1)withincreas-ingsalinizati
6、ondegree,andthedifferencewasmoreobviousinthenearinfraredregion(1350-1850nm).Thisbandrangeofspectralreflectancewasthemostsensitivewavelengthforidentifyingsalinizedsoilandwassignificantlycorrelatedwithsoilsalt(=0.880**).Byselectingsensitivebands,saltindexmodelsincludingSI,BI,SI,NDSIan
7、dSIwereconstructedtomonitorsoil123salinization.Amongthemodels,theSI1andBIsaltindexeswerethemostaccurate,withaminimumRMSEof0.151and0.149,andREof7.5%and6.3%,respectively.Werecommendtheseasthebestmodelstomonitorsoilsalinityincottonfields.cottonfields;spectrum-saltindex;soilsalinization
8、;monitoring[1]土壤鹽漬化
