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Study on Spatial Heterogeneity of Picea Schrenkiana Var. Tianshanica Biomass

Author: WangSuYing
Tutor: LiHu
School: Fujian Normal University
Course: Cartography and Geographic Information Systems
Keywords: Spatial heterogeneity Biomass Spruce forest West Tianshan
CLC: S791.18
Type: Master's thesis
Year: 2010
Downloads: 38
Quote: 0
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Abstract


Select the Western Tianshan the Gongliu forest study area , on the basis of data preprocessing , HJ - 1B satellite images and forest survey data , to extract different age classes of spruce forest ; based on linear regression analysis to determine the age The relationship between spruce forest and vegetation index . Model combined with the established West Tianshan spruce forest age classes of remote sensing monitoring of biomass , the spruce forest biomass inversion of the study area . Heterogeneity on different scales spruce forest biomass space based on geostatistical methods to analyze the use of spherical , exponential , Gaussian model fitting , the results showed that : the forest -scale spatial distribution of spruce forest biomass affected by random factors , compared with on the small-scale spatial variability as well as random sample data characteristics also affect the results of the analysis ; small class scale the spruce forest biomass space continuity and better overall variability to a lesser extent , spatial variability affected by structural factors is relatively large; based of different images like element size of each age class the spruce forest biomass spatial heterogeneity : near mature forest , mature forest biomass at different scales similar spatial variability of relative to peers , within the specified range may grade spruce forest biomass scales deduction . The combination of spatial heterogeneity analysis from structural randomness angle of view, and to discuss the impact of structural factors topographic factors , soil type , spruce forest update features the space distribution of spruce forest in elevation 1400 2700m , 15 ° slope -45 ° slope, half shade slope spruce forest biomass distribution the terrain range ; mountain leaching gray brown soil , mountain the ordinary chernozem with loam the soil and texture of the spruce forest biomass distribution type ; updates are more evenly distributed , the middle canopy density area and update level has a positive effect on the spruce forest biomass distribution . According to business type , tree species, the origin site survey from randomness angle analysis of the impact of human activities on the space distribution of the spruce forest biomass . It is the interaction of two factors , resulting in the current spatial distribution of the Gongliu forest spruce forest biomass and Variation .

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CLC: > Agricultural Sciences > Forestry > Forest tree species > Coniferous > Spruce
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