库布齐沙漠草场资源遥感调查及草畜平衡-研究——以杭锦旗为例

《库布齐沙漠草场资源遥感调查及草畜平衡-研究——以杭锦旗为例》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、内蒙古师范大学硕士学位论文2007to2011，thehighestisYihewusutown，15．71X107；minisHuhemudutown，3．99X107alone．Sooverall，thewholecity’SEVIvalueishigherthanthenorthinthesouth．(2)AccordingtothesamplesgrassbiomassanditscorrespondingvegetationindexNDVIandEVI，throughMSExcelstatisticalsoftware，usingline

2、arfunction，exponentialfunctionandlogarithmicfunction，havebeenfunctionandpolynomialfunctionsimulationandanalysisbetweenvegetationindexandediblehayyieldofcorrelation．ResultsshowthatthepolynomialmodelcanwellsimulateMODIS／NDVIandEVlwithediblestrawyield．TherelationshipbetweenEVIrele

3、vancetoediblehayyield1SgreaterthanthecorrelationbetweenNDVIandediblehayyield，thecorrelationcoefficientis0．312．Statisticalanalysisresultsshowthattheenhancedvegetmionindex(EVI)andthecorrelmionbetweenthegrasslandbiomassdataishighest，thehighestcorrelationcoefficientandaverageyielde

4、stimationprecisionofthepolynomialmodel，SOtheinversionpolynomialmodeltoestimatetheHangjincounty’Sgrassbiomassontheground．CalculatedfromtheresultsofHangjincity’Sgrassbiomassonthegroundfrom2007—2011，thehighestgrassbiomassonthegroundis2007，109．90x107kg／hm2；thegrassabovegroundbiomas

5、sof201isthelowest，86．53X107kg／hmz．Hangiincity’SEVIvalue。of201isalsothelowest，SOthecorrespondinggrasslandbiomassislowontheground．一From2007to201five—yearaveragegrassabovegroundbiomass，thegrassbiomas,sontheground’SmaximumisYihe—wusutown，25．71x107kg／hm2，thesmallestistheBalagongtown

6、，8．51X107kg／hm2．Therestofthetownships’grassabovegroundbJomassfrombigtosmallintum，Xinitown，Jirigalangtutown，Hangjinnaoertownship，DuguitalatownandHuhemudutown，thisisadaptedtoHan西inCounty’SenhancedvegetationindexdistributionofEVIvaluesareidenticalwitheachother．(3)From2007to201Hang

7、jincounty’Stheoryofgrasslandgrazingcapacityupto2007，145．87X104sheepunit，theleastis2011，44．36X104．Grasslandgrazingcapacitywillbeaffectedbyclimateand内蒙古师范大学硕士学位论文pastureconditions，drought，lessprecipitationin201l，SOHangjincity’SEVIvaluesandgrassbiomasswerelowontheground．Sothegrass

8、landgrazingcapacityisless．Ineachtown，innearlyfiveyears