Impact of Soil Conservation on Household Income in East Wollega, H/G/ Wollaga and West Shawa Zones of Oromia Region
Issue:
Volume 9, Issue 1, March 2023
Pages:
1-7
Received:
29 July 2022
Accepted:
8 December 2022
Published:
9 February 2023
Abstract: Land degradation in many third world countries threatens the livelihood of millions of people and constrains the ability of countries to develop a healthy agricultural and natural resource base. This study was conducted to explore Impact of Soil Conservation on Household Income in East Wollega, H/G/ Wollaga and West Shawa Zones of Oromia Region. In this study, three-stage sampling procedure was used to select six districts, tuwelve kebeles and 252 specific sample farm households. Descriptive and econometric analyses were employed. This study has been designed with objective of to assess the impacts of the SWC on yields and farmers’ income, to assess community perception towards the ongoing SWC interventions. and to identify constraints and opportunities on SWC practices in the study area. The analysis is based on the data collected from randomly selected 252 farm households in western Ethiopia. a propensity score matching method for impact analysis to avoid bias arising from possible self-selection. The descriptive analysis showed that, out of the 252 household heads, in the study area the average farm size of the respondents was fragmented into 3.36 parcel, each with average 2.26 hectares. In the sampled area, 13.3%, 57.8%, 14.8%, and 14.1% of the interviewed farmers has been built SWC structures on cultivated land by SLM programme, by campaign, with their family and through both (campaign and family) respectively. The results obtained through a propensity score matching method was 7931.3 Ethiopian Birr net on household income of farmers increase for adopters as compared to non-adopters.
Abstract: Land degradation in many third world countries threatens the livelihood of millions of people and constrains the ability of countries to develop a healthy agricultural and natural resource base. This study was conducted to explore Impact of Soil Conservation on Household Income in East Wollega, H/G/ Wollaga and West Shawa Zones of Oromia Region. In...
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Research on Installation Technology of Super Large Radial Gate of Dam in Complex Environment
Issue:
Volume 9, Issue 1, March 2023
Pages:
8-16
Received:
9 October 2022
Accepted:
26 October 2022
Published:
20 March 2023
Abstract: Taking the installation construction of super large radial gates of Nam theun1 hydropower station in Laos as an example, due to the lag of civil construction period and the dam structure, it is not convenient for large lifting equipment to enter the installation face directly. This paper introduces the application of "Bailey beam + Gantry crane" lifting radial gate technology under the conditions of large construction interference, heavy construction task and tight construction period, The installation of super large multi hole radial gate was successfully and quickly realized, which ensured the water storage and power generation schedule of the power station. According to the normal construction sequence, the radial gate of the spillway should be installed normally with large lifting equipment in the open hole state after the civil construction junction, and the upper concrete construction should be carried out after the radial gate is installed. During the construction of the dam and the arc gate, the civil engineering is in the process of sluice construction, the concrete of the dam body is rising, the multi-process and multi-professional construction is intensive, and there are multi-directional intersecting operations, which causes great construction interference. Combined with relevant cases, this paper focuses on the installation technology of super large radial gate in the high temperature and Rainy Zone and the complex environment with limited construction site conditions, so as to provide reference for the implementation of similar projects and actively explore new advanced technology for the industry.
Abstract: Taking the installation construction of super large radial gates of Nam theun1 hydropower station in Laos as an example, due to the lag of civil construction period and the dam structure, it is not convenient for large lifting equipment to enter the installation face directly. This paper introduces the application of "Bailey beam + Gantry crane" li...
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An Appraisal of Heavy Metal Distribution in Surface Water and Groundwater in the Vicinity of a Salt Mine
Kana Aisha Abubakar,
Isah Muhammad Awwal,
Kana r Ahmad Abubaka
Issue:
Volume 9, Issue 1, March 2023
Pages:
17-25
Received:
20 October 2022
Accepted:
16 November 2022
Published:
20 March 2023
Abstract: Water quality is a big concern for the humankind as it is the most important natural resource. The quality of water is affected by anthropogenic activities carried which could render it unsuitable for human consumption. The present study assessed heavy metal distribution and toxicity in surface and groundwater resources of an area characterized by salt mining from brine ponds. Samples were analyzed for pH, electrical conductivity (EC) elemental compositions of: Ba, Mn, Fe, Cu, Sr, and Zn to assess their spatial distribution, sources, variability, toxicity and possible health risks. Median concentrations of Ba, Mn, Fe, Cu, Sr, and Zn in surface water was: 0.28, 3.63, 2.23, 0.03, 0.14 and 0.05 respectively while for groundwater, median concentration was: 0.65, 0.20, 1.16, 0.03, 0.83 and 0.11 respectively. In terms of suitability, concentrations of Mn, Fe and Sr in surface water, and that of Sr, in groundwater raises some quality concerns since they are all present in concentrations above the permissible limits for drinking water. Results of Corelation and Principal Component Analyses showed that source and mobility of these metals is linked to both geogenic (host rock weathering) and anthropogenic activities mainly associated with salt mining and processing in the region of a saline pond. Spatial distribution of concentration of these metals also shows higher concentrations in the immediate region of the salt mine especially in groundwater.
Abstract: Water quality is a big concern for the humankind as it is the most important natural resource. The quality of water is affected by anthropogenic activities carried which could render it unsuitable for human consumption. The present study assessed heavy metal distribution and toxicity in surface and groundwater resources of an area characterized by ...
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