野生黄蘑菇圈对草地植被及土壤的影响

蘑菇圈的生长对生长蘑菇的区域的植被具有明显的圈带状分布特点 ,并且圈上植物群落结构不同于不受黄蘑菇影响的圈外 ,主要表现在圈上植物的物种数、总盖度及分盖度总和均明显高出圈外 ,但圈上、圈外植被的优势种的主要伴生种相同 圈上植物群落物种多样性指数明显高于圈外 ,而均匀度指数变化不明显 圈上土壤含水量、速效磷、硝态氮和氨态氮的含量明显高于圈外 ,但交换性Ca2 + 、交换性Mg2 + 和 pH值的变化不明显

The Growth of Fairy Rings of Armillaria Luteo-virens and their Effect upon Grassland Vegetation and Soil

This study was to test the growth of fairy fings of Armillaria luteo virens and their effect upon grassland vegetation and soil.The results showed:the vegetation affected by the growth of Armillaria luteo virens was characteristic with fairy rings distribution,and had different structures of community in contrast to unaffected vegetation.The vegetation of fairy fings had more the number of species and the total cover of plant species.But both of them had same dominant species.The diversity indices of plant species in fairy ring community were higher than those of outside fairy rings,but both of them had same evenness indices.The concentrations of water content,available P., available N.in fairy rings of Armillaria luteo virens were higher than outside rings,but there is no obvious changes in Ca 2 ,Mg 2 and pH.