Browsing by Subject "Physico-chemical parameters"
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Item Drinking Water Quality Analysis in Kupondole(Department of Zoology, 2019) Shrivastav, SumitAvailable with full textItem Hydro- Geochemistry and Amphibian Assemblage of Kupinde Lake, Salyan, District, Nepal(Department of Zoology, 2022) Sunar, Chandra BahadurAvailable with full textItem Soil Formation in the foreland of Bhimthang Glacier, Manang, Central Nepal(Department of Botany, 2019) Gahatraj, MahendraGlacier forelands is considered as a unique field laboratory and the most sensitive and highly-confident indicators of climatic variation. Glacier forelands after retreat of glacier expose new sites to understand soil development through mechanical and chemical weathering, as well as biological i.e. due to vegetation and microbial colonization. The present study attempts to understand the variation in soil development through time and space and status of Bhimthang glacier foreland in Manang district of Central Nepal. Five transects were laid on the south-west aspect of foreland. The transects line were placed parallelly at the distance of 50m from each other. Along each transect, 12 quadrats of 2 m × 2 m each were laid down at an interval of 30 m. Result shows that the soil nutrient contents (SOC, N, P and K) increases with increased distance from glacier toe and the other physical as well as chemical properties (Soil depth, bulk density, pH, RRI, open space, vegetation cover and rock cover) also varied between newly formed soil and old aged soil along the glacier foreland. The study also explains the chrono sequential changes of glacier foreland soil through spatio- temporal scale. The area close to the glacier toe is regarded as young soil and farther from glacier as old soil. Bhimthang glacier was found to be continuously retreating from 1988 to 2018. Glacier foreland represents a unique platform for research on the study of chrono sequential changes of the ecosystems and soil development pattern during primary succession. Key word: Climate change, Chronosequence, Physico-chemical parameters, Glacier retreatItem A Study on Physico-Chemical Characteristics of Beeshazar Lake, Chitwan, Nepal(Department of Environmental Science, 2007) Bastakoti, UjwalPhysico-chemical analysis of water and surface soil parameters and quantitative analysis of tree species of Beeshazar Lake System were performed to assess the general ecological status of the lake system. The values of certain water parameters(pH, conductivity, surface water temperature, free CO , total solids, GPP, chloride,orthophosphate, nitrate and total nitrogen) were observed highest in monsoon season;while total alkalinity, D.O. and transparency values were observed highest in winter season and total hardness value was observed highest in autumn season. The observedvalue of transparency, total nitrogen and orthophosphate ranked the lakeineutrophicto hypereutrophic state. The surface soil of the forest around Beeshazar Lake was observed acidic with sandy loam texture. The values of certain surface soil parameters(O.M., phosphorous and potassium) were observed highest in monsoon season; while soil conductivity, and total nitrogen values were observed highest in autumn season and soil pH value was observed highest in winter season. All together 11 tree species belonging to 9 families were recorded in the forest around the lake with the dominancy of Shorea robusta. The total density of the tree species recorded in the present study was 372.50 pl/ha, with total basal area of 28.3246 m 2 2 /ha., total volumeof225.6159 m 3 /ha and total above ground biomass of 196.6291 ton/ha. Keywords:Physico-chemical parameters,seasonal variation,water, surface soil, tree biomass