International Journal of Ecology and Environmental Sciences
Arbuscular Mycorrhizal Fungal diversity in different forest types and altitudinal gradients of West Kameng District, Arunachal Pradesh (India)
Abstract
The study was conducted in mountain forests from 1000-3800m (msl) in West Kameng district of Arunachal Pradesh by covering four different forest types (Tropical wet evergreen, Subtropical broad leaved, Coniferous and Sub-alpine) that harbored seven different types of dominant vegetation. Soil and root samples were collected from three to six different sampling sites of five different location covering the four different forest types along an altitude gradient of the area. Soil physicochemical properties, number of infective AMF propagules, AMF colonization (%) in composite root samples and AMF spore population were quantified. Soil texture of these forests were either Sandy loam or Clay loam. Soil organic carbon (OC) varied from 1.50 to 3.41 with a significant difference among forest types. The Subalpine Forest had the highest OC whereas the subtropical and conifer forest had the lowest. However, their P, N, K contents and soil pH did not differ significantly. Infective AMF propagules and root colonization ranged between 16-126% g-1 soil and 32-65% respectively. The highest spore density was found in Subtropical broad-leaved forest from 2000-2999m (msl). Five genera and 26 morphotypes of AMF were identified in these forests with their highest diversity in Subtropical broad-leaved forest from 2000-2499m (msl). Species of Glomus and Acaulospora were present in all forest types.
Keywords
References
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