Abstract:

This paper deals with the ecological types of pteridophytes of Dulongjiang region. It puts forward that the study on the ecological types should be based on the ecological factors. Therefore, the pteridophytes in Dulongjiang region can be divided into 16 ecological types separately according to the effects of ecological factors, i.e.heliophytes, sciophytes, tolerophytes, megatherm,submegatherm.mesotherm,submesotherm,microtherm,xerophytes,mesophytes, hygrophytes, epiphytes, terraphytes, lithophytes, acidophytes and calnciphytes. Finally, the ecological features of Pteridophytes in this region are: (1) Diversified ecological type; ( 2)Rich in the species of sciophytes, submegatherm and mesophytes; (3)High proportion of the species of epiphytes; (4) Few proportion of the spe-cies of xerophytes and lithophytes.

Key words: Pteridophytes, Ecological type, Dulongjiang region

摘要：

本文对独龙江地区蕨类植物的生态类型进行研究。本文提出：进行生态类型的划分应该以生态因子为依据。根据各个生态因子的生态作用，独龙江地区蕨类植物的生态类型可以分别划分为阳性植物、阴性植物、耐阴植物、高温植物、亚高温植物、中温植物、微温植物、低温植物、旱生植物、中生植物、湿生植物、附牛植物、土生植物、石生植物、酸性上植物和钙质土植物等。最后得出该地区蕨类植物的生态特征：生态类型多样;阴性植物、亚高温植物和中生植物种类多;附生植物种类所占比例大;旱生植物和石生植物种类少。

关键词: 蕨类植物, 生态类型, 独龙江地区