用LSD法再探泥石流地貌要素之隐式关系  

The Further Analysis of Relief Factors of Debris Flow By the Method of LSD

作　　者：王莉丽[1] 

机构地区：[1]北京工业大学应用数理学院,北京100022

出　　处：《数理统计与管理》2004年第3期17-21,共5页Journal of Applied Statistics and Management

摘　　要：藉助MATLAB工具,对泥石流沟的六个地貌要素之流域面积、主沟长、切割度、沟口高程、流域高差和沟床比降等,一起用最小平方距离法(LSD)进行了初步处理分析之探讨:建立了线性相关的回归方程,并与用最小二乘法(LS)得到的线性回归方程进行比较,一些参数的估计值得到了改善。In this paper we give the regression equation of the groove gradient and the degree of cutting using the method of least square distances(LSD) .Then we compare the results of LSD with LS .It seems the estimators are improved by the method of LSD.We also do the same work on other relief factors of debris flow:the drainage area and the length of main groove etc.

关 键 词：LSD法 泥石流沟 地貌 最小平方距离 回归方程 最小二乘法 

分 类 号：O241.5[理学—计算数学] P931.2[理学—数学]