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Research of Syringa Oblata Spectrometric Method and Related Factors Estimate Model

Author: WangXiaoLiang
Tutor: AnHuiJun
School: Inner Mongolia Agricultural University
Course: Forest Management
Keywords: Spectral characteristics Cloves Estimation Model
CLC: S685.26
Type: Master's thesis
Year: 2011
Downloads: 15
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Abstract


This paper ASDinc portable field feature spectrometer were observed on the spectral characteristics of Inner Mongolia Agricultural University Eastern campus cloves , clove in the visible - near-infrared bands canopy , single leaf spectral characteristics observation and Ding Xiangguan layer a different location different angle spectral observations , combined with simultaneous measurements of chloroplast pigments and leaf tissue structure analysis and comparison of the results , the following conclusions : ( 1) within 325 ~ 1075nm band , Ding Xiangguan layer and the South to the angle of depression of the spectrum at a = 0.05 level under no significant difference can be used to Southern analysis of the spectral characteristics of the trees to replace the vertical direction to the depression angle spectrum . (2 ) the cloves spectrum with blade pigment content were negatively correlated . Based spectral model estimate pigment content of the leaves , single leaf spectral fitting model is better . The various estimation model are as follows : Chl-ab (mg / g) = 2.298-2.808R 555 0.59R 685 -3.061R 710 (R < sup> 2 = 0.836) Chl-a (mg / g) = 1.66-1.961R 555 0.318R 685 -2.176R 710 (R 2 = 0.853) Chl-b (mg / g) = 0.638-0.847R 555 0.272R 685 -0.885R < sub> 710 (R 2 = 0.827) Car (mg / g) = 0.454-0.652R 555 0.914R 685 - 0.763R 710 (R 2 = 0.833) relative error of 6.9% , 6.7% , 6.4% , 7.3% , respectively . Based estimation model hyperspectral variable pigment content of the leaves , the canopy hyperspectral variables better fitting model . The various estimation model are as follows : Chl-ab (mg / g) = 2.562-42.5Db 0.951Dy-42.96SDb-0.586SDy (R 2 = 0.811) Chl-a (mg / g) = 1.85- 29.83Db 0.632Dy-30.32SDb-0.373SDy (R 2 = 0.817) Chl-b (mg / g) = 0.712-12.67Db 0.319Dy-12.64SDb-0.213SDy (R 2 = 0.816) relative error of 6.7 % , 6.5% and 6.4% , respectively . ( 3 ) cloves spectrum and leaf thickness , palisade tissue thickness between the overall positive correlation ; negatively correlated with the thickness of the spongy tissue ; leaf tissue than the spectral characteristics change with cloves .

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CLC: > Agricultural Sciences > Gardening > Ornamental Horticulture ( flowers and ornamental trees) > Flower trees in class > Cloves
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