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尼日利亚Owerri重金属污染土壤丛枝菌根真菌多样性研究

摘要

对奥韦里市部分重金属污染土壤中丛枝菌根真菌的物种多样性进行了研究。土壤(0-20 cm)采集自8个不同的位置，即:(1)高汽车机械活动区。(2)中等汽车机械活动区。(3)汽车机械活动区低。(4)旧垃圾场。(5)主动转储站点。(6)恢复转储站点。(7)交通繁忙的公路。(8)作为对照的未受干扰的植被地。土壤样品的理化参数包括重金属铅(Pb)、镉(Cd)和锌(Zn)。 Also the ecological characteristics of AM fungi species were determined. Results showed that areas with high pollution index (PI) adversely affected the richness and diversity of AM fungi species. Seven different AM fungi ecotypes were isolated from the soil samples. These ecotypes had varied relative abundance across the locations. Species richness and diversity as measured by Shannon-Wiener index decreased in soils with PI>20 but increased with low PI < 20. However, these organisms maintained significant populations across the locations. Thus suggesting high possibility of facilitating microbial activity in heavy metal stressed soil ecosystems.

Chris O Nwoko

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