PlantPen便攜式NDVI植被指數(shù)測(cè)量?jī)x?是一種快速測(cè)量植物反射光譜指數(shù)的野外便攜式儀器。PlantPen的兩種標(biāo)準(zhǔn)版配置分別測(cè)量NDVI和PRI這兩種應(yīng)用為廣泛的植被指數(shù)。用戶也可以定制其他參數(shù)

PlantPen NDVI 310：NDVI (Normalized Difference Vegetation Index)歸一化植被指數(shù)是通過計(jì)算植物葉片對(duì)紅光和近紅外兩個(gè)波長(zhǎng)光反射而得到的參數(shù)，是反映植物葉綠素含量的一個(gè)重要參數(shù)。葉綠素會(huì)強(qiáng)烈吸收紅光用于光合作用，而葉片細(xì)胞結(jié)構(gòu)會(huì)強(qiáng)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

葉綠素含量快速檢測(cè)

植物光合研究

早期脅迫檢測(cè)

氮素利用效率研究

●技術(shù)參數(shù)

PlantPen便攜式NDVI植被指數(shù)測(cè)量?jī)x

PlantPen NDVI 310：歸一化植被指數(shù)NDVI = (RNIR – RRED) / (RNIR + RRED)

測(cè)量光：內(nèi)置雙波長(zhǎng)光源，PlantPen PRI 210：531nm和570nm；PlantPen NDVI 310：635nm和760nm

檢測(cè)波長(zhǎng)：PlantPen PRI 210：500 – 600 nm；PlantPen NDVI 310：620-750 nm

通訊：藍(lán)牙1.1，USB

存儲(chǔ)：16M

數(shù)據(jù)存儲(chǔ)：100,000個(gè)

顯示：圖形顯示

鍵盤：密封防水設(shè)計(jì)2鍵

電源：可充電鋰電池，USB充電，連續(xù)工作70小時(shí)，低電報(bào)警

自動(dòng)關(guān)機(jī)：5分鐘無操作

尺寸：135×65×33 mm

重量：188g

操作環(huán)境：溫度： 0 ～ 55 ºC; 相對(duì)濕度： 0 ～95 % (無冷凝)

存儲(chǔ)條件：溫度：-10 ～ 60 ºC;相對(duì)濕度：0 ～ 95 % (無冷凝)

●參考文獻(xiàn)

1. K Jabran, et al. 2018. High carbon dioxide concentration and elevated temperature impact the growth of weeds but do not change the efficacy of glyphosate. Pest Management Science 74(3): 766-771

2. K Trnková, et al. 2017. Desiccation‐induced changes in photochemical processes of photosynthesis and spectral reflectance in Nostoc commune (Cyanobacteria, Nostocales) colonies from polar regions.Phycological Research 65(1): 44-50

3. V Leemans , et al. 2017. Estimation of leaf nitrogen concentration on winter wheat by multispectral imaging.SPIE Commercial + Scientific Sensing and Imaging

4. Y Fenghua, et al. 2016. Models for estimating the leaf NDVI of japonica rice on a canopy scale by combining canopy NDVI and multisource environmental data in Northeast China. International Journal of Agricultural and Biological Engineering 9(5): 132-142

5. C Zhang, et al. 2016. Affecting Factors and Recent Improvements of the Photochemical Reflectance Index (PRI) for Remotely Sensing Foliar, Canopy and Ecosystemic Radiation-Use Efficiencies. Remote Sensing 8(9): 1-33

6. LLR Mendonçaa, et al. 2016. Management of Meloidogyne javanica with biological pesticides and oils in a lettuce field. Nematoda 3: e152015

7. R Calderón, et al. 2016. Soil temperature determines the reaction of olive c*rs to Verticillium dahliae pathotypes. PLOS ONE 9(10): e110664

8. M Barták, et al. 2015. Effect of dehydration on spectral reflectance and photosynthetic efficiency inUmbilicaria arctica and U. hyperborean. Biologia Plantarum 59(2): 357-365