四川马边植被垂直分布带谱土壤放线菌特征

Characteristics Of Soil Actinomycetes in Vertical Distribution Belts of Vegetation in Mabian County of Sichuan

本文主要对四川省马边县具有垂直分布带谱的山地土壤放线菌数量特征采取微生物平板培养法和计数法进行研究。结果表明:随着土层深度的增加土壤放线菌数量明显下降;不同林分类型土壤放线菌数量差异明显;土壤放线菌的数量随海拔高度的升高先增多后减少;同时,不同植被的林地放线菌总数量在雨季和旱季变化较大,以雨季最大而旱季最小的趋势,且差异显著。

In this paper,researches were made on the characteristics of soil actinomycetes in the vertical distribution mountain belts of Mabian County by use of microbial plate culture method and counting method. The results showed that soil actinomycetes decreased with the increase of soil depth; different forest types had an evident difference in soil actinomycetes; the amount of soil actinomycetes would first in- crease and then decrease with the increasing altitude. Meanwhile, the total number of actinomycetes in different forest vegetation varied widely during the rainy and dry seasons, the largest trends appeared in the rainy season and the minimum trends happened in the dry season, and their difference was significant.