摘要
利用统计软件SPSS,对2010年3、4月肃北县地温与地面高度的数学关系从统计学角度进行了分析,对地面温度随地面高度的变化进行了曲线拟合,并对获得的各类曲线进行了相应的显著性检验、F检验以及相关系数的检验;为了检验方程的可信度,又对观测值与预测值进行了对比分析,最终确定肃北县地面温度随地面高度的变化规律。结果表明,2010年3、4月肃北县地面温度随地面高度的变化拟合曲线中,三次曲线方程的解释能力最大,显著性水平很高,即三次方程具有很高的可信度,能够很好地反映地面温度随地面高度的变化规律,是最优的拟合曲线。
Using statistical software SPSS,the numerical relation of ground temperature and ground height in Subei County was expounded from the angle of statistics.The changes of the ground temperature along with the ground height were treated with curve fitting.Corresponding significance test,F test and relevant coefficient of each kind of curve were obtained.In order to test the credibility of the equation,and to compare the observed value and the predicted value,the changes of the ground temperature along with the ground height in Subei County were determined in the end.Result indicated that SuBei county surface temperature of with the change rule of ground height linear equations respectively,quadratic equations,the cubic equations,composite curve model,the power function,logarithmic equation,and the index and fitting,equation of the curve parameter estimation.Results show that in March,April,the ground temperature with the change rule of ground height,the cubic equations has the best fitting effect.
出处
《安徽农业科学》
CAS
北大核心
2011年第32期20096-20098,共3页
Journal of Anhui Agricultural Sciences
关键词
地温
地面高度
SPSS
曲线拟合
Ground temperature
Ground level
SPSS
Curve fitting
