Environmental & Physical Sciences

Research Papers/Topics Environmental & Physical Sciences

THE COMPOSITION AND STRUCTURE OF WOODY SPECIES ALONG ALTITUDINAL GRADIENT AND CONSERVATION PRACTICE OF HADES FOREST, OROMIA REGIONAL STATE, ETHIOPIA

Abstract: The dry Afromonatane natural forests of East and West Hararghe are under severe degradation. There are some remnant mountain forests in West Hararghe, which are under increasing anthropogenic threats and call up urgent conservation actions. This study was conducted at Hades dry Afromontane natural forest, West Hararghe zone of Oromia Regional state, Ethiopia with the objective of determining the woody species composition along altitudinal gradients and conservation status. The data...

EFFECT OF LAND USE LAND COVER ON SELECTED SOIL PROPERTIES AND SOIL ORGANIC CARBON STOCK IN GUDER WATERSHED, NORTH WESTERN ETHIOPIA

Abstract: Continuous conversion of land for different agricultural production purpose has resulted in degradation of soil resources. The decline of soil fertility and soil organic carbon stock become notable phenomena in the highlands of Ethiopia. The present study was conducted to analyse and quantify the land use/land cover changes over the periods of 28 years and to investigate the influence of A. decurrens tree-based farming system on selected soil properties and soil organic carbon stoc...

PASTORALISTS’ PERCEPTIONS, VULNERABILITY AND THEIR ADAPTATION STRATEGIES TO CLIMATE CHANGE AND VARIABILITY: CHALLENGES TO PASTORAL MOBILITY IN BORANA ZONE OF SOUTHERN ETHIOPIA

Abstract: Climate change and variability is increasingly being recognized as a critical challenge to pastoral production systems in the arid and semi-arid rangelands of Ethiopia. Pastoral communities in the Borana zone of Ethiopia have been changing and adapting their livelihoods to changing environmental conditions for centuries. The objective of this study was to assess the vulnerability of pastoralists and their adaptation strategies to climate change and variability in the rangeland of B...

Integrated Management of Fall Armyworm Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) in Maize (Zea mays L.) Using Climate Smart Approach at University of Zambia, Field Research

Abstract: The fall armyworm (FAW) (Spodoptera frugiperda) is a devastating pest of maize which has recently invaded the African continent. Since its first reports in Africa in 2016, it has spread rapidly in Zambia and it is causing extensive damage to maize and other cereal crops. The efficacy of the integration of botanical pesticides with entomopathogenic fungi and synthetic pesticide, on FAW were tested under field conditions. The experiment was laid out in a randomized complete block des...

BIOGAS PRODUCTION FROM CO-DIGESTION OF COW DUNG AND BARLEY STRAW

Abstract: Biogas can be produced from any biodegradable feedstock that is suitable for anaerobic digestion. In present day biogas production from barley straw and cow dung was investigated using the number of small reactors. Barley straw was co digested with Cow dung with the aim of biogas production. Five treatment mixtures of Barley straw and Cow dung in ratio of 100% Barley straw(BS), 70% Barley straw(BS) and 30% Cow dung(CD) , 50% Barley straw(BS) and 50% Cow dung(CD) , 30% Barley straw ...

WOODY SPECIES DIVERSITY AND CARBON STOCK VARIATION ALONG ALTITUDINAL GRADIENTS AT MUHABURA VOLCANO, NORTHERN RWANDA

Abstract: This study was conducted at Muhabura Volcano, in Volcanoes National Park, Northern Rwanda, to determine woody species diversity and carbon stock potential of woody species along altitudinal gradients. The study area was stratified into three strata based on physical appearance of vegetation and elevation gradients: low altitude 2502-2882 m a.s.l, middle altitude which lies between 2883-3109 m a.s.l and upper altitude which lies between 3110-4127 m a.s.l. A total of 60 plots of 20m ...

DIVERSITY AND CONSERVATION STATUS OF NON-TIMBER FOREST PRODUCTS (NTFPS) IN AMIGNA DISTRICT, EAST ARSI ZONE OF OROMIA REGIONAL STATE

Abstract: This study was focused on the diversity and conservation status of non- timber forest products (NTFPs) in Sera forest with the objective of identifying and documenting diversity of plant species used as NTFPs and their conservation status. The study applied a combination of plant ecological and ethno botanical methods. A preferential systematic sampling method was used to collect vegetation data from 50 plots of 20 m x 20 m for all woody species and 2x2 m subplots inside the large ...

MODELLING SPATIO-TEMPORAL DISTRIBUTION OF Prosopis juliflora UNDER PREDICTED CLIMATE CHANGE IN MARIGAT SUB-COUNTY, KENYA

Abstract: Prosopis juliflora is an invasive species that has caused adverse ecological, social and economic impacts in Kenya. Climate change is anticipated to aggravate the spread and invasion of this species. This is now raising concerns because further expansion of this species will worsen its negative impacts on the livelihoods of the adjacent communities, and on the ecological integrity of the invaded areas. However, there is limited understanding and knowledge on the influence of climat...

IMPACT OF ADOPTION OF SMALL-SCALE IRRIGATION ON THE LIVELIHOOD AND RESILIENCE OF SMALLHOLDER FARMERS AGAINST CLIMATE CHANGE STRESSES: THE CASE OF KERSA DISTRICT, EAST HARARGHE ZONE, OROMIA

Abstract: Small-scale irrigation is one of the most useful irrigation systems designed to increase the production and productivity of smallholder farmers and protect them against the risks of crop loss due to erratic rainfall. This study was mainly intended to evaluate the impact of small-scale irrigation practices on the livelihood and resilience of smallholder farmers toward climate change stresses in Kersa district, East Hararghe Zone, Oromia. The data were collected from a sample of 288 ...

HOUSEHOLD SOLID WASTE GENERATION ,CHARACTERIZATION AND MANAGEMENT PRACTICES IN MELKA RAFU TOWN, KOMBOLCHA DISTRICT OF EAST HARARGHE ZONE, ETHIOPIA

Abstract: Household Solid Waste Generation, characterization and Management Practices in Melka Rafu Town, Kombolcha District of East Hararghe Zone, Ethiopia The rapid increase in population together with expansion of urban centers is producing large volumes of wastes, which demand better infrastructure, institutional setup and community participation for its management. But, most of solid wastes that generated are remaining uncollected and simply dumped at open space. This study focused on i...

HOUSEHOLD SOLID WASTE GENERATION ,CHARACTERIZATION AND MANAGEMENT PRACTICES IN MELKA RAFU TOWN, KOMBOLCHA DISTRICT OF EAST HARARGHE ZONE, ETHIOPIA

Abstract: Household Solid Waste Generation, characterization and Management Practices in Melka Rafu Town, Kombolcha District of East Hararghe Zone, Ethiopia The rapid increase in population together with expansion of urban centers is producing large volumes of wastes, which demand better infrastructure, institutional setup and community participation for its management. But, most of solid wastes that generated are remaining uncollected and simply dumped at open space. This study focused on i...

GENERATION RATE AND PHYSICO CHEMICAL CHARACTERIZTION OF HOUSEHOLD SOLID WASTE IN DEDER TOWN ADMINISTRATION, EAST HARARGHE ZONE, ETHIOPIA

Abstract: Household solid waste (HSW) has both direct and indirect effects on the environment and human welfare. This is mainly due to the lack of information on the generation rate and physico chemical characterize of the household solid waste property. So, this study aims to determine the generation rate and physico chemical properties of household solid waste in Deder town adminstration, East Hararghe zone, Ethiopia. In order to achieve this objective, soild waste data was collected from ...

BIOTRANSFORMATION OF BREWERY SLUDGE AND LANTANA CAMARA L. THROUGH VERMICOMPOSTING IN HARAMAYA DISTRICT, EAST HARARGHE ZONE, ETHIOPIA

Abstract: Biotransformation of brewery sludge and Lantana camara is a double interest, as it converts industrial waste in to useful product and helps to control invasive weeds. The objective of this study was to evaluate vermicomposting technology in the biotransformation of brewery sludge (BS) and Lantana biomass in to valuable product. Fresh (BS) was obtained from the waste water treatment plant of Harar brewery factory, which is located in Harar city. Lantana camara (LC) was collected fro...

GENERATION RATE, CHARACTERIZATION, AND MANAGEMENT PRACTICES OF MUNICIPAL SOLID WASTE IN CHIRO TOWN, EASTERN ETHIOPIA

Abstract: The most pressing environmental issue in Chiro Town is the growing amount of solid waste generated and the lack of an effective waste management system. The purpose of this study was to determine the present generation rate, physicochemical characterization, and management practices of solid waste generated by households, commercial center and government organizations in Chiro town, Oromia region, Ethiopia. The research was done on households, commercial centers and government orga...

COMPARATIVE ANALYSIS OF IMPACT OF SOIL MIXTURE ON GROWTH AND SEEDLING QUALITY OF SELECTED AGROFORESTRY TREE SPECIES

Abstract: In the study area, there was problem of seedling quality because of degraded local soil fertility and competing interest for manure from vegetable, fruit, coffee and kahat producers. The study was focused on determining the most suitable soil amendment for germination and early seedling growth of selected indigenous multipurpose agroforestry tree species. Seedlings were raised in polythene tubes having 10cm diameter and 15cm height and the experimental plots were laid out with eigh...


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