基于空间自相关法的水土保持区划研究——以东北黑土区为例

目的]研究空间自相关法在水土保持区划中的应用,以期对将来水土保持区划工作提供指导。方法]以东北黑土区为研究区域,采用空间自相关法解析研究区气候、地貌、土壤、植被等空间分布特征,并进行干湿分区、地貌分区、土壤分区等划分,然后采用空间叠置法得出东北黑土区水土保持区划。结果]研究区划分为10个综合单元,经植被、降雨以及地理要素分布等调整,最终将研究区划分为8个二级区。结论]该研究区划结果较为准确,空间自相关法在水土保持区划中具有较好的应用效果,并且可以大大提高区划工作效率。

Research on Soil and Water Conservation Zonation Based on Method of Spatial Autocorrelation -A Case Study in Black Soil Region of Northeast China

Objective] This article explored the possibility of the application of spatial autocorrelation method in the soil and water conservation zonation in order to provide guidance for the future work. Methods] Taking the black soil region of the Northeast China as the study area, this paper used the method of spatial autocorrelation to analyze the distribution characteristics of the climate, landform, soil, plant and other factors in the study area and then derived dry and wet climate regionalization, geomorphic regionalization and soil regionalization separately. Finally, the soil and water conservation zonation of the black soil in the northeast of China was got by using the geometrical packing method. Results] The study area was divided in to 10 synthetic units by overlay analysis. Adjusted according to the distribution characteristics of the plant, rainfall and geographical factors, the study area was then summarized into 8 classes, 2 zones finally. Conclusion] The results showed that the zonation result is comparatively accurate, and this method is not only practical but also improve work efficiency.