【摘要】 <正> 一、引言亚热带常绿阔叶林是一个资源丰富、分布广泛的植被类型,它具有种类繁多、结构复杂的特征。因此,野外工作方法就显得特别重要。使用的方法是否得当,涉及到所得资料是否反映客观的真实情况。过去,对样地法(Plot Method)在常绿阔叶林中的应用,有过更多还原

【Abstract】 A study was made of plotless method to investigate the subtropicalevergreen broad-leaf forest in two moutains of Szechuan Province. 1. It was shown that the result of the point-centered quarter method(one kind of plotless method) is similar to that of the plot method. 2. The number of sampling points is closely related with the componentand structure of the plant community. It is suggested that is in proper tosample no less than 15 points in one stand, taking data from 60 plants and60 distances. 3. It is fitting to set several parallel transects, but not only onetransect in subtropical broadleaf forest in China. The distance betweentransects and that between points is better no less than seven meters. 4. The point-centered quarter method has the adventage of speedinessand convenience. It takes only one third time of plot method.更多还原