利用投影寻踪回归技术建立草地产量模型的研究  

The Study on Yield Modelling of Rangeland Reconstruction by Application of Profection Pursuit Regression Statistics

作　　者：邓传玲[1] 许鹏[1] 胡锋铎 

机构地区：[1]新疆八一农学院

出　　处：《草业学报》1994年第2期65-68,共4页Acta Prataculturae Sinica

基　　金：国家自然科学基金

摘　　要：本文采用新型的投影寻踪回归统计分析方法，对位于新疆天山北坡低山带５个草地亚型，在测定时段内的日均生长量与地形、土壤含水量、土温、气温、降水量、生长时期进行相关分析，以时段日均干草生长量为因变量，上述其它因素为自变量，建立ＰＰＲ回归模型，以此揭示植物生长与环境的客观关系，在对产量形成的环境解释研究方法上取得一定进展。In the paper,by applying the new method of Projection Persuit Regression(PPR)statistics,fiverangeland subtypes in low一leveled moumtainous belt of northern slope of Tianshan Mountain Range inXinjiang,their yield measurement per day in each and every time period was analysed,the items for calcula-tion of correlation coefficient were as follows:topography,soil moisture,soil temperature,atmospheric temp-erature,rainfall,and various stages of growth and improvement and so on。We have made a PPR model to study on the relationship between plant growth and surrounding envi-ronments in which the daily yield of hay(on DM basis)in the time period of experimentation as dependentvariables and those other factors concerned as independent variables in statistics were calculated。Some certain progresses have been made toward environmental interpretation to yield formation。

关 键 词：投影寻踪回归 草地 机理模型 产量 

分 类 号：S812.3[农业科学—草业科学]