基于因子空间分异的巴彦县土地利用格局变化研究

Land Use Pattern Change Based on Factor Spatial Differentiation in Bayan County

[目的]探究黑龙江省巴彦县土地利用格局变化特征,为优化土地利用格局奠定基础。[方法]运用AutoLogistic回归模型和空间统计分析方法。[结果](1)引入空间自相关因子,构建AutoLogistic回归模型,在分析区域土地利用格局变化特征时比传统Logistic模型更为适用和可靠。(2)研究区黑龙江省巴彦县土地利用格局变化是基于特定的自然因素和人文因素共同作用而发生的,高程、地貌类型、pH值、土壤有机质、距城镇中心距离、距水域距离、距道路距离、区位指数、集中化程度、土地利用多样性和土地利用强度是土地利用格局变化的主要影响因子。(3)不同土地利用类型的分布受影响因子的限制性存在明显的空间分异特征,水田、水域和草地主要分布在高程1级区域;旱地、水田、园地、建设用地主要分布在土壤有机质2,3级区域;旱地、园地、建设用地主要分布在距城镇中心距离1级区域和土地利用强度4,5级区域。[结论]研究区土地利用格局在各影响因子的共同作用下,呈现出明显的空间分异特征。

[Objective]The change characteristics of land use pattern in Bayan County,Heilongjiang Province were explored to laid foundation for land use pattern optimization.[Methods]AutoLogistic regression model and spatial statistical analysis method were used.[Results]（1）Introducing the spatial autocorrelation factor to construct AutoLogistic regression model is more applicable and reliable than the traditional Logistic model in analyzing the change characteristics of regional land use pattern.（2） The land use pattern is closely related to natural and human factors.Elevation,landform,pH value,soil organic matter,distance to town center,distance to waters,distance to roads,location index,centralization degree,land use diversity and land use intensity are the main influencing factors of land use pattern change.（3） The obvious spatial differentiation characteristics of the distribution of different land use types were restricted by influencing factors.The paddy,water and grassland were mainly distributed in the areas of level 1 elevation.The dry land,paddy,garden and construction land were mainly distributed in the 2 and 3 levels of soil organic matter.The dry land,garden and construction land were mainly distributed in the areas of level 1 distances to the town center and the level 4 and 5 land use intensity.[Conclusion]The land use pattern of the study area shows obvious spatial differentiation characteristics under the combined effects of various factors.