Volume 2, Issue 3, September 2018, Page: 47-57
Heterogeneity in Event-Based Soil Hydrologic Response to Different Land Use Types in Upper River Njoro Catchment, Kenya
Leah Amisi, Department of Agricultural Engineering, Egerton University, Nakuru, Kenya
Peter Musula Kundu, Department of Agricultural Engineering, Egerton University, Nakuru, Kenya
Raphael Muli Wambua, Department of Agricultural Engineering, Egerton University, Nakuru, Kenya
Received: Aug. 16, 2018;       Accepted: Sep. 19, 2018;       Published: Oct. 19, 2018
DOI: 10.11648/j.ijem.20180203.11      View  302      Downloads  37
Abstract
Soil hydrologic response depends on the soil characteristics such as infiltration capacity, porosity, organic matter content and bulk density. Knowledge on the dynamics of these soil parameters and soil hydrologic response as a result of different land use types is crucial for formulation and adoption of proper soil and water conservation techniques for increased agricultural production. In this research, soil hydrologic response to different land use types is evaluated. Four land use types were purposely selected. These included natural forest, deforested land, fallow agricultural land and grassland. Soil samples were collected and soil hydraulic and hydrological properties that included soil texture, bulk density, saturated hydraulic conductivity, porosity and organic matter content were determined in the soil laboratory. The evaluated soil hydrological response parameters included runoff coefficients, infiltration rate, water repellency and ponding time. The findings showed that the highest and lowest mean bulk density of 1.36 and 0.96 g/cm3 was recorded for deforested and natural forest land respectively. The highest mean saturated hydraulic conductivity (170.21cm/day), porosity (0.62) and organic matter content (4.63%) were observed in the natural forest while the lowest values (24.78cm/day, 0.47 and 0.75%) respectively were found in the deforested land. High water repellency (100.34 cm/hr) and runoff coefficient (0.0077) was recorded in the deforested areas. The findings of this indicate how different land use types affect on-site hydrologic response and generation of stream flow in the catchment hence providing baseline data for future soil and water relations research.
Keywords
Hydrologic Response, Land Use, Event-Based Analysis
To cite this article
Leah Amisi, Peter Musula Kundu, Raphael Muli Wambua, Heterogeneity in Event-Based Soil Hydrologic Response to Different Land Use Types in Upper River Njoro Catchment, Kenya, International Journal of Engineering Management. Vol. 2, No. 3, 2018, pp. 47-57. doi: 10.11648/j.ijem.20180203.11
Copyright
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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