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The Dominant Trees Spectral Reflectance Responses to Environmental Factors in Changbai Mountain

Author: LiuWeiGuo
Tutor: FanXiuHua
School: Beijing Forestry University
Course: Biophysics
Keywords: Spectral reflectance Gaps Elevation gradient Intensity of competition
CLC: S718.4
Type: Master's thesis
Year: 2010
Downloads: 55
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Abstract


Optical response to changes in environmental changes , elevation changes and the intensity of competition in order to study the spectral reflectance characteristics of the important species of Changbai Mountain Changbai Mountain plant community succession and provide basic data for the spectrometer used in this study were four areas of research , measurement analysis the experiments selected species of leaf spectral reflectance characteristics of the pigment content correlation : measurement of the spectral reflectance of the leaves of broadleaved Korean pine six major tree species saplings in the gaps , understory light environment ; koraiensis and Abies needle leaves, and ermanii leaf spectral reflectance at different altitudes ; the Manchurian ash leaf spectral reflectance at different competitive intensity . The results show that a different species spectral reflectance characteristics are very different , but many of the spectral index and pigment content with good correlation ; the two Lam gap chlorophyll normalized index (Ch1 NDI) are higher than the understory , and the forest photochemical reflectance index (PRI) of the gap of the below understory light gap is more abundant , but the species suffered stress did not reduce the photosynthetic rate and did not show significantly increased ; the three study three arbors in the spectral reflectance of the different altitude changes significantly , there are significant differences in the spectral index proved relevant physiological conditions change significantly , Korean pine ermanii , spectral index varies linearly with the elevation gradient , but Abies spectral index did not the altitude gradient linear relationship ; ash trees and seedlings of the four study found that the growth rate of the treated seedlings , biomass , root morphological characteristics and the changes of the spectral reflectance characteristics consistent spectral reflectance can accurately monitor the plant competitive intensity changes in physiological characteristics .

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CLC: > Agricultural Sciences > Forestry > Forestry basic science > Forest Biology > Dendrology
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