摘要
利用该区有代表性５处站点１９０年组数据，分别采用系统聚类、判别分析、水土保持分析法对黄土区坡耕地侵蚀强度进行分级和对比。系统聚类法分级细微，判别分析法分级与习惯分法接近，水土保持法有时难以确定。进而在比较基础上，提出分级系统。
Data of 190 groups from 5 representative research stations in loess area were used to study erosion intensity of sloping fields with systematic cluster, discriminate analysis and the method of water and soil conservation respectively. The results show that systematic cluster was the most detailed method. There was no obvious different between discriminate analysis and the tranditional method. A grading system is given.
出处
《西北林学院学报》
CSCD
1995年第A01期15-21,共7页
Journal of Northwest Forestry University
关键词
黄土
土壤侵蚀
侵蚀强度
分级
loess
erosion
intensity of erosion
grading method
