時間:2018-11-15
作者:易科泰
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簡介:
PlantPen葉夾式PRI&NDVI測量儀
PlantPen葉夾式PRI&NDVI測量儀是一種快速測量植物反射光譜指數(shù)的野外便攜式儀器。PlantPen的兩種標準版配置分別測量NDVI和PRI這兩種應(yīng)用最為廣泛的植被指數(shù)。用戶也可以定制其他參數(shù)。
PlantPen PRI 210:PRI (Photochemical Reflectance Index) 光化學(xué)反射指數(shù)是通過計算植物葉片對531nm和570nm兩個波長光反射而得到的參數(shù)。該參數(shù)對類胡蘿卜素極為敏感,反應(yīng)植物的光合作用中的光能利用效率和CO2同化速率,并可作為植物水脅迫的可靠指數(shù)。因此廣泛用于植物產(chǎn)量和脅迫研究。
PlantPen NDVI 310:NDVI (Normalized Difference Vegetation Index)歸一化植被指數(shù)是通過計算植物葉片對紅光和近紅外兩個波長光反射而得到的參數(shù),是反映植物葉綠素含量的一個重要參數(shù)。葉綠素會強烈吸收紅光用于光合作用,而葉片細胞結(jié)構(gòu)會強烈反射近紅外光。因此,NDVI與光合能力直接相關(guān),從而反映植物冠層的能量吸收狀況。
應(yīng)用領(lǐng)域
功能特點
技術(shù)參數(shù)
用戶定制
描述植物結(jié)構(gòu)和葉綠素含量的參數(shù)種類很多,應(yīng)用測量光波長各異,計算方法也各不相同。為了滿足不同客戶的需求,可以定制適合各種類似參數(shù)的掌上植物測量儀?;蛸徺IPolyPen RP410光譜儀測量植物全反射光譜。
應(yīng)用案例
西班牙巴斯克大學(xué)使用PlantPen PRI測量儀和FluorPen葉綠素?zé)晒鈨x研究高產(chǎn)大豆對干旱脅迫的生理和光合響應(yīng)(Buezo,2019)。
沈陽農(nóng)業(yè)大學(xué)使用PlantPen NDVI 和SpectroSense 2+植被指數(shù)測量儀分別測量水稻葉片和冠層的NDVI(Y Fenghua, 2016)
產(chǎn)地:捷克
參考文獻
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