AM真菌在我国东、南沿海各土壤气候带的分布

本文研究了我国东南沿海七省中15种土类60科植物根区278份土样中908个种次AM真菌的地域分布规律。本区土壤区带和气候区域的分带基本一致，共分为五个土壤气候带。AM真菌5个属中球囊霉属在所有区带均为优势属，其出现率由北至南稍呈下降趋势；硬囊霉属则与之相反，由北向南总体上呈上升趋势；无梗囊霉属、巨囊霉属和盾巨囊霉属无明显地域规律。AM真菌某些种也有不同的分布规律。

THE REGIONAL DISTRIBUTION OF AM FUNGI IN TIlE EAST AND SOUTH COAST OF CHINA

This paper deals with the regional distributions of AM fungi in the east and south coast of China. The studies were based on 278 soil samples from root zones of host PlantS belonging to 60 families in 15 soil types. Soil division and climate zone coincide in this region, and was divided into five zones. Glomus was the Predominant genus in all soil-climate zones investigated, the frequency decreased slightly from north to south; contrarily Sclerocystis in general increased from north to south. The distribution regularities of Acaulospora, Gigaspora and deutellospora were not obvious in this region. The occurrence frequency of some species seems tO relate to soil and climate conditions too.