| 三江源区高寒草地牧草产量主要影响因子分析 |
| |
| 引用本文： | 罗振堂,郭连云,谢卫东.三江源区高寒草地牧草产量主要影响因子分析[J].干旱区资源与环境,2011(6):122-126. |
| |
| 作者姓名： | 罗振堂 郭连云 谢卫东 |
| |
| 作者单位： | 青海省贵德县气象局;青海省海南州气象局;青海省兴海气象局 |
| |
| 基金项目： | 青海省科技厅(科技促进新农村建设计划项目:海南州草地资源空间分布调查与畜牧业生产布局研究,编号2009-N-503)资助 |
| |
| 摘 要： | 利用高寒草地多年牧草产量和主要气象因子,运用主成分法分析了影响牧草产量的影响因子,并用逐步回归分析法建立了牧草产量回归统计模型,结果表明,影响牧草产量的因子顺序为:7月份温度x4＞4月降水x8＞8月日照x19＞6月日照x17＞生长期总降水量x13＞7月降水x11.结合通径分析方法对影响因子进行分析,对牧草产量的直接作用...
|
| 关 键 词： | 三江源 牧草产量 主成分分析 多元线性回归分析 通径分析 |
Major influencing factors for grass crop of high and cold meadow in Three River Source |
| |
| LUO Zhentang,GUO Lianyun,XIE Weidong.Major influencing factors for grass crop of high and cold meadow in Three River Source[J].Journal of Arid Land Resources and Environment,2011(6):122-126. |
| |
| Authors: | LUO Zhentang GUO Lianyun XIE Weidong |
| |
| Institution: | 1.Meteorological Bureau in Guide County,Guide 811750,P.R.China;2.Meteorological Bureau in Haninan State of Qinghai Province,Gonghe 813000,P.R.China;3.Meteorological Bureau in Xinghai County,Xinghai 813300,P.R.China) |
| |
| Abstract: | According to the high and cold meadow grass crop yield and the main meteorological factor,we analyzed the influence factors for grass crop using the principal components law,and established the grass crop return statistical model with the stepwise regression analytic method.The result indicated that the influence factor order is: In July temperature x4> in April precipitation x8> in August sunshine x19> in June sunshine x17> vegetal period total precipitation x13> in July precipitation x11.The union path analysis method was carried on to analyze the influence factors having direct action to grass crop.that is: Vegetal period total precipitation x13> in April precipitation x8> in August sunshine x19> in June sunshine x17> in July temperature x4> in July precipitation x11. |
| |
| Keywords: | Three River Source grass crop principal components analysis multivariate linear regression analysis path analysis |
| 本文献已被 CNKI 等数据库收录！ |
