应用数量化理论Ⅰ研究飞播造林成效

Applying the Theory of Quantification I to Reaeh the Aerial Seeding Effect

收集宁德地区5个县（市）16个飞播造林播区729个样地的资料,采用数量化理论Ⅰ的方法进行马尾松飞播造林成效和苗高生长的研究,设8个项目,每一项目划分2～4个类目,应用ACRO-386微机求解参数,得预测方程。经计算复相关系数及F检验、方差比、项目得分范围、偏相关系数及t检验,预测方程的回报精度表明线性回归关系极端显著,回报精度高,所建立的预测方程有实际意义;影响飞播造林成效和苗高生长的主要立地因子为植被盖度（以0.3～0.7为好）、海拔高（以250～800m为好）、坡向（以半阳坡、半阴坡为好）。

After collecting the 729 sample areas information from the 16 aerial seeding areas of 5 counties (cities) in Ningde prefecture, and applying the theory of quantification I to reach the effect of the masson pine aerial seeding and growth of seeding , We set 8 items , in which 2 or 4 categories for one item and use ACRD-386 microprocessor to find the solution of the parameter and get prediction equation. Then we calculate then correlation coefficient (with its F examination ) , variance ratio , range , biascorrelation coefficient ( with its t examination ) the precision of the estimation of the prediction eguation to express the relation of the linear regression is notable , the precision of the estimation is high and the prediction aquation has a practical significance . The main site factors which affect the aerial seeding and the growth of seeding are vegetation coverage (0.3-0.7 is better) ,elevacion (250-800m is better), slope direction (half positive or half negative slope is better).