水土保持措施布局影响因子的多尺度分析

以福建省长汀县为研究区,运用统计学方法和GIS技术,从自然环境方面分析不同尺度下的水土保持措施空间分布的主要影响因子.为了避免选择分析尺度的随意性,利用小波分析识别水土保持措施空间格局的特征尺度.采用30 m×30 m网格单元为基本研究单元,平均聚合生成以30 m为尺度间隔的多个尺度序列图层,分别构建不同聚合规模的水土保持措施与不同作用范围的影响因子之间的多元线性回归模型.研究结果表明:利用标准化回归系数衡量,水土保持措施空间分布影响因子在不同的作用范围及不同的规模尺度上,对水土保持措施空间分布的影响程度是不同的.

Multi-Scale Analysis on Impact Factors of Layout of Soil and Water Conservation Measures

Taking Changting County of Fujian Province as the research area, the main impact factors of the spatial distribution of soil and water conservation measures are analyzed in different scales from the aspects of natural environment by using statistical methods and GIS technology. In order to avoid the random selection of analysis scale, the characteristic scale of spatial pattern of soil and water conservation measures are identified by wavelet analysis. The scale of 30 m×30 m is used as the basic research unit, and the multiple scale sequence data layers is based on 30 m scale interval are generated by the average polymerization. The multiple linear regression model in different aggregate size between the soil and water conservation measures and its impact factors is constructed. The results show that the impact factors of spatial distribution of soil and water conservation measures have different effect on the spatial distribution of soil and water conservation measures in different ranges of action and different scales, and the influence degree is measured using standard regression coefficient.