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Fractal and Geo-statistics Characterization of Forest Arrangement Spatial Structure and Its Relationship with Thermal Field

Author: DuHuaQiang
Tutor: ZhaoXianWen
School: Beijing Forestry University
Course: Forest Management
Keywords: Forest arranged Spatial structure Fractal Geostatistics Thermal field Software
CLC: S771.8
Type: PhD thesis
Year: 2005
Downloads: 268
Quote: 6
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Abstract


In this study, based on remote sensing data, summarized with different spatial configuration, spatial distribution of forest lots that the massive clearcutting ground type, plaque type, line type, twigs type and planar type and define them as forest order. How to express different forest the arranged space structure information, to establish the relationship between the spatial structure of the thermal field, and their significance for forest management is the main purpose of this significance. In the first part, the study focused on the spatial structure of the forest arranged information mathematical expression, the main use of fractal geometry and spatial statistics, geostatistics, scale variance analysis principles, methods, respectively, from forest arranged space fragmentation character, multi-scale study different aspects of the characteristics of spatial heterogeneity, spatial configuration and distribution forest arranged spatial structure of their differences; second part different forest arranged brightness temperature inversion from remote sensing data and fractal technology analysis of different forest arranged thermal field spatial distribution pattern, put forward the idea of ??building a quantitative relationship between the thermal field with spatial structure, and then based on the results of the analysis to the spatial structure, thermal field as an environmental factor, thermal field The relationship between the spatial structure and explore their significance in forestry; third part Matlab6.1 platform, the completion of the main part of the fractal and geostatistical analysis of remote sensing data based software system design and development, spatial statistics and fractal analysis in the complex algorithm and visualization. Through a large number of studies, this paper has made some progress and innovation: connotation for forest arrangement defined using the F1, EPP, IPP and FCP four forest fragmentation index fragmentation character and significance of the analysis and evaluation of the different forest arranged space. 2, master the different forest Ordering space rating scale mutation rule, namely the massive clearcutting ground and patch type in a small space on the rating scale scale variance change; linear arrangement and a planar arrangement in a larger space rating scale on mutations; the living between branches Ordering. Pointed out that as the scale play an important role as an independent variable, the introduction of the importance of forest management practices, multi-level, multi-scale forest management from the means and methods to try and explore. 3, through the comparative analysis of the spherical model and exponential model shows that the exponential model γ (h) = C 0 C (1-e -h / a is better able to describe the spatial structure of forest arranged. differences of different forest arrangement, the model parameters reveals the essential difference of the spatial pattern structure analysis shows that the model parameters, different forest arranged spatial heterogeneity scale \Type lt; the plaques arranged lt; linear arrangement lt; branches arranged lt; planar arrangement of the law, and the spatial heterogeneity scale and scale variance mutations dramatic scale basic corresponding to further illustrate the different permutations of its important ecological functions and processes The role of different scales. 4 different forest arrangement had a fractal, the fractal nature of objective existence, take advantage of this new non-linear theory of fractals as a means to describe the different forest arranged space configuration, distribution of differences is a desirable ways. and refinement of the algorithm and triangular prism box dimension algorithm are two ways to calculate the fractal dimension arranged in a different forest, two algorithms have consistent results that \gt; planar arrangement \; also shows

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CLC: > Agricultural Sciences > Forestry > Forest Engineering and forestry machinery > Forest measurement, forestry survey > Forest remote sensing
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