Relationship between normalized difference vegetation index (NDVI) and forage biomass yield in the Vakinankaratra region, Madagascar

V B Rahetlah; P Salgado; B AndrianarisoaE TillardH RazafindrazakaL Le MézoV L Ramalanjaona

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Relationship between normalized difference vegetation index (NDVI) and forage biomass yield in the Vakinankaratra region, Madagascar

机译：马达加斯加Vakinankaratra地区归一化植被指数（NDVI）与牧草生物量产量的关系

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DairycowproductionisanimportantlivestockactivityinthehighlandsofMadagascarandspecificallyintheVakinankaratraregion.Despitetheincreaseofglobalmilkproductionoverthelastdecades,cowproductivityremainslowduetobothquantityandqualityfeedconstraints.ElephantgrassandItalianryegrassarethemostcultivatedforagegrass,duringthewetandwarmseasonandthedryandcoolseason,respectively.Anexperimentunderfieldconditionswascarriedouttoevaluatetheabilityofthesatellite-derivednormalizeddifferencevegetationindex(NDVI)todevelopatoolforestimatingbiomassyieldsofElephantgrassandItalianryegrass.Resultsshowedmoderatetostrongbutsignificantrelationshipbetweenplantheightandbiomassyield(R²=0.64to0.92),betweenNDVIandbiomassyield(R²=0.52to0.73)andbetweenNDVIandplantheight(R²=0.61to0.74)ofElephantgrassandItalianryegrass,respectively.TheseresultssuggestthatNDVIhaspotentialtoprovideatoolfordynamicmonitoringandmanagementofpasturelandforageproduction.

机译：奶牛生产是马达加斯加高地的重要牲畜活动，特别是在Vakinankaratraregion.尽管全球牛奶产量在过去几十年中有所增加，但奶牛生产力仍然缓慢，这是由于数量和质量饲料的制约因素。象草和意大利黑草分别是栽培的牧草，分别在湿季和暖季和旱季和冷季。结果显示，象草和意大利黑草的中等至强但显著关系在植物高度和生物量之间（R²=0.64至0.92），NDVI和生物量产量（R²=0.52至0.73）和NDVI与植物高度（R²=0.61至0.74）之间。这些结果表明，NDVI有可能为牧场牧草生产的动态监测和管理提供工具。

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《livestock research for rural development》 |2014年第5期|共页
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V B Rahetlah; P Salgado; B AndrianarisoaE TillardH RazafindrazakaL Le MézoV L Ramalanjaona;
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Relationship between normalized difference vegetation index (NDVI) and forage biomass yield in the Vakinankaratra region, Madagascar

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