摘要
在贵州省水土保持四级区划下,立足安顺市实际情况划分市级区划,从区域水土流失潜在危害性、水土流失现状、水土流失治理能力3个层次选取22个指标作为初选指标,利用SPSS主成分分析法对初选指标进行主成分提取,以此得出基本评价单元综合得分,再利用层次聚类分析法对各要素层进行适当分类,结合ArcGIS将聚类分析结果绘制成图,最后利用ArcGIS进行空间叠置分析。结果表明:安顺市水土保持区划在构建评价指标体系过程中考虑了与人为活动影响相关的定性因子,并对其进行了量化,利用统计分析与空间分析相结合的方法,将安顺市划分为4个分区,使区划成果更科学合理。
Under the four-level zoning of soil and water conservation in Guizhou Province,the city-level zoning was based on the actual situation of Anshun City.22 indicators were selected from the three levels of regional soil erosion potential hazards,status of soil erosion,and soil erosion control ability as the primary selection indicators.The principal components of the primary indicators were extracted by SPSS principal component analysis method,and the comprehensive score of the basic evaluation unit was obtained.Then,the hierarchical cluster analysis method was used to classify the element layers appropriately,and the clustering analysis results were plotted with ArcGIS.Finally,the spatial overlap analysis was carried out by using ArcGIS.The results showed that the qualitative factors related to the impact of human activities were considered and quantified in the construction of the evaluation index system of Anshun City’s water and soil conservation zoning,and Anshun City was divided into 4 districts using a combination of statistical and spatial analysis,which makes the division results more scientific and reasonable.
作者
任杰
REN Jie(Guizhou Province Soil and Water Conservation Technical Consulting Research Center, Guiyang,Guizhou 550005)
出处
《贵州林业科技》
2020年第3期13-19,共7页
Guizhou Forestry Science and Technology
关键词
贵州省
安顺市
主成分分析
水土保持区划
Guizhou Province
Anshun City
Principal component analysis
Division of soil and water conservation
