Research On Spatial Distribution And Heterogeneity Of Different Kinds Korean Pine Forests

Korean pine is the important precious timber species, it distributed wildly in the thress northeastern provinces in eastern mountain area in China. Korean pine as the main tree species of broad-leaved Korean pine is a zonal climax of the region, it has irreplaceable ecological function. Due to long-term serious disturbance, the broad-leaved Korean pine area accumulation decreased dramatically, the area is less than6%and total accumulation amount is less than10%, and the distribution is island. In order to protect and restore the broad-leaved Korean pine, study on community structure and spatial distribution pattern of the analysis is particularly important for broad-leaved Korean pine of sustainable management to provide scientific theoretical basis.The different kinds of Korean pine forests of Liangshui nature protection area in eastern Xiaoxing’an mountains are the object of the study, according to the site conditions similar principle, we established18sample plots of Korean pine natural forests, Korean pine pure forest and Korean pine broadleaf mixed forest with different areas. We studied the correlation of single species and interspecies of important species in Korean pine natural forest, Korean pine pure forest and Korean pine broadleaf mixed forest, the spatial distribution pattern of different age-classes and correlation between each age-classes, the spatial distribution pattern of forest growth factor, the spatial heterogeneity of soil and vegetale, spatial model of forest growth factor was forecasted, choose the GWR model with spatial attributive as the best model of forest growth spatial model, it has innovative.Spatial distribution of correlation among chief species is given priority to with no significant correlation, individual tree species have positive correlation or negative correlation in small scale, because Korean pine as the advantage species, occupying most of the space.The spatial distribution pattern different kinds of age-class in Korean pine forest are studied use O-ring statistic function. The spatial correlation between different age class all present no obvious in Korean pine natural forest, Korean pine pure forest and Korean pine broadleaf mixed forest, only Ⅰ age-class and Ⅱ age-class at near-level slope in Korean pine broadleaf mixed forest present spatial positive correlation obviously, and it present spatial positive correlation between2age-classes in small scale scope.The4trees growth factors (diameter at breast height, tree height, crown breadth, volume) on the isotropic in the entire space scale are characterized by obvious differences in Korean pine natural forest; the4trees growth factors compared with other forest types in the whole space scale difference is relatively small in Korean pine pure forest; the4growth factor showed obvious differences in individual scale in Korean pine broadleaf mixed forest. In addition to DBH at near-level slope in Korean pine natural forest, the DBH an d H in every slope to show the direction of135°the most significant part of autocor relation spatial heterogeneity; In addition to the sunny slope, the CW and V at the nea r-level slope and shady slope in Korean pine natural forest are shown as90°direction of autocorrelation spatial heterogeneity is the most significant part, this is the natural operation of Korean pine plantation provides the reliable theory basis and data support.Analyzed the spatial distribution regularity and characteristics of Korean pine, trees grow GWR model is proposed. It explains that the simulation results of GWR model in the simulation of the effect is better than OLS model. Test of two models, it can b e seen from the evaluation index of the model, the indicators of GWR model are bette r than OLS model, it shows that the model based on spatial pattern is more suitable f or the forecast of forest tree growth factor analysis.All essential nutrient at0～20cm soil layer in Korean pine natural forest increa sed with the increase of altitude showed obvious spatial heterogeneity; it isn’t obvious i n Korean pine pure forest and Korean pine broadleaf mixed forest; only common factor F3has correlation with altitude at20-40cm soil layer in Korean pine pure forest and at20～40cm soil layer in Korean pine broadlesf mixed forest.The number of herbosa and shrub vegetation in different kinds of Korean pine for ests on the spatial division does not exist obvious heterogeneity, the spatial distribution of average height and average crown of herbosa and shrub vegetation in different kind s of Korean pine forests have spatial heterogeneity.