Fractal And Geo-statistics Characterization Of Forest Arrangement Spatial Structure And Its Relationship With Thermal Field

In this study, five kinds of forest area with different spatial forms and spatial distribution were intercepted from remote sensing data, which are Blocky clearing cut type (JFD), Block type (BL), Linear type (LT), Tree branch type (TB) and Area type (AT), and define them as Forest Arrangements, In this study the mainly aim is how to obtain and characterize the spatial structure of different forest arrangements, build their relationship with thermal Field, and discuss their meaning to forest management. In part I of the dissertation, the study emphasized on obtaining and characterizing forest arrangements spatial structure information. We mainly made use of the related theory and method of Fractal geometry and Spatial statistics such as Geo-statistics, Scale Variance to analyze and character spatial structure of different forest arrangements, which include spatial fragmentation features, spatial hierarchical scale, spatial heterogeneity and spatial form, distribution etc. In part II of the dissertation, bright temperature of different forest arrangements were retrieved from ETM+ or TM band6, and we adopted fractal technique to analyze the thermal fields spatial pattern of different forest arrangements at the first time, then brought forward the idea to construct the quantitative relationships of spatial structure with thermal fields, and finally, built them and discussed their meaning in forestry. In part III of the dissertation, Fractal and Geo-statistic Analysis software of Remote Sensing (FG ARS) has been designed and developed based on Matlab6.1 in this study.Some results and creative points were obtained in this study as below:1, Taking account of the connotation of forest arrangement, the spatial fragmentation features and meaning of different forest arrangement were assessed by four kinds of fragmentation indices Fl , EPP, IPP and FCP.2, The spatial hierarchical scale variability of different forest arrangement was analyzed. JFD and BL has a strong scale variability in fine scale, LT and AT in large scale, and TB between them.3, The study shows that exponential model can be used to reflect spatial structure of forest arrangements better than spherical model, the difference of spatial patterns of different forest arrangements was exposed by model parameters. According to the analysis of the model parameters such as Range, Sill, nugget etc, the spatial heterogeneity scales ofdifferent forest arrangements had following law: JFDBL>LT>TB>AT. the difference of fractal dimensions were effected by spectrum features, spatial heterogeneity, forest fragmentation and so on, it shown that fractal mechanism of different forest arrangements have relationship with their spatial structure.5, It shows that the difference of spatial forms of different arrangements has positive correlation with Multifractal parameters such as the symmetry of their Multi-spectrum, and the irregular relationship of different arrangements is (JFD) BL>LT>TB>AT. Combine multifractal analysis with fractal dimensions, it further reflects that AT and TB have better fractal structure, and the spatial structure of LT, LT, JFD need develop.6, The Fractal theory was firstly adopted to research the thermal field spatial patterns of different arrangements. It proved that fractal method can reflect correctly the difference of thermal field spatial patterns of different arrangements, and thermal field spatial features are similar to the geographical spatial feature of forest arrangements.7, The idea to construct the quantitative relationships of spatial structure and thermal fields was brought...