Effects of Land Use/Cover Type On Surface Water Quality: In The Case Of Chancho and Sorga Watershed, East Wollega Zone, Oromia, Ethiopia

Tolera Megersa and Taffa Tullu
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Taffa Tullu: Center for Environmental Science, Addis Ababa University, Addis Ababa, Ethiopia

International Journal of Environmental Sciences & Natural Resources, 2018, vol. 12, issue 4, 94-103

Abstract: The result indicated that there were significant differences among the land use/cover types in deteriorating water quality. Agriculture dominated surface water values for total nitrogen, total suspended solids & acidity (5.09 and 65.68mg/l, 4.67), respectively, was greater than the others two land uses, this is because of use of inorganic fertilizer and runoff from cultivated land, whereas, Urban dominated surface water was greater in total dissolved solid (111.7mg/l), it is due to urban dissolved solids runoff to the downstream. Forest dominated surface water has fewer amounts of TDS, TSS &TN (62.66, 18,28,2.95 mg/l), as compared to other land use types. Total phosphors(TP) values of Urban, Agriculture& Forest dominated surface water were 0.74,0.56 &0.0001mg/l, respectively, which was greater in Urban followed by Agriculture dominated surface water. Besides, correlation among water quality indicators were analyzed for each land use/cover type, the results of correlation analysis indicated that almost all water quality parameters of forest and agriculture dominated sub-watershed values were positively correlated with each other, except TSS and TN of forest and TN and PH of agriculture were negatively correlated. Whereas, more of urban dominated surface water quality parameters values were negatively correlated to each other, except TN and PH at 95% confidence interval.

Keywords: earth and environment journals; environment journals; open access environment journals; peer reviewed environmental journals; open access; juniper publishers; ournal of Environmental Sciences; juniper publishers journals; juniper publishers reivew (search for similar items in EconPapers)
Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:adp:ijesnr:v:12:y:2018:i:4:p:94-103

DOI: 10.19080/IJESNR.2018.12.555842

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