What is more evident is that every generation showed its apperently intensivedistribution of those figures .
具体到各省区，其人物大体上都是以零星分布为主，仅少数地区呈密集型分布。
2
The main genera are Pteris L., Colysis Presl, Woodwardia Sm., Selaginella Spring and Asplenium L., among which Pteris L. and Woodwardia Sm. have relatively intensivedistribution.
主要属为凤尾蕨属、线蕨属、狗脊蕨属、卷柏属和铁角蕨属，其中以凤尾蕨属和狗脊蕨属分布相对集中。
3
Firstly, factors that influence land intensive use are analyzed, and then space distribution law and dynamic changes of land intensive use are elaborated.