Environmental & Physical Sciences

Environmental & Physical Sciences Research Papers/Topics

HOMEGARDEN AGROBIODIVERSITY PRACTICES AND THEIR IMPACTS ON SMALLHOLDER HOUSEHOLDS’ FOOD SECURITY: THE CASE OF YAYA GULELE WOREDA, NORTH CENTRAL ETHIOPIA.

Abstract: Homegarden agrobiodiversity practices are well developed and highly appreciated for the agroecosystem sustainability and socio-economic contributions to small holder farmers in Africa particularly in Ethiopia. There are a number of studies, which have been analyzed the homegarden agrobiodiversityin Africa as well as in Ethiopia.However, a comprehensive scientific study on the homegarden practices, its contribution to the economic and livelihood of the people were not done.Therefore...

EFFECT OF VEGETATION TYPES AND ELEVATION ON CARBON STOCK POTENTIAL OF WOODY SPECIES OF JORGO-WATO NATURAL FOREST, WESTERN ETHIOPIA

Abstract: Forests play significant role in climate change mitigation through capturing atmospheric carbon. Ethiopia, despite being one of the biodiverse countries at the global, it has limited forest resources distributed in certain parts of its territory. The moist evergreen Afromontane forests of Western Ethiopia are among the Ethiopian forests that contribute significantly to the climate change mitigation. Jorgo Wato Forest is one of the moist Afromontane forests in Western Ethiopia that ...

WOODY SPECIES COMPOSITION AND CARBON STOCK POTENTIAL OF AWASH NATIONAL PARK, ETHIOPIA

Abstract: This study was conducted in Awash National Park, Ethiopia, to analyse woody species composition and estimate carbon stock potential of woody species in different vegetation types. A total of 80 quadrats of 20m x 20 m, 5m x 5m and 1m x 1m with 16 horizontal transect lines were used to collect information on tree, shrub, and litters and soil respectively in the four vegetation types. A total of 52 woody species belonging into 23 families with stem number of 1369 individual/ha were re...

TREE DIVERSITY AND THEIR CARBON STOCK IN SELECTED URBAN GREEN INFRASTRUCTURES, LILONGWE CITY, MALAWI

Abstract: Urban vegetation stands as a pivotal ecosystem for the provision and support of ecosystem services in towns and cities leading to the attainment of SDG 11: “Make cities and human settlements inclusive, safe, resilient and sustainable.” In pursuit of this goal, this study aimed at determining the present urban tree species richness, diversity and carbon stock potential in Lilongwe City, Malawi. Six distinct urban forest types were identified: Cemeteries, Institutional lands, Par...

LAND USE/LAND COVER CHANGE AND ORGANIC CARBON STOCK POTENTIAL UNDER DIFFERENT LAND MANAGEMENT SCENARIOS IN SIRARO WOREDA, CENTRAL RIFT VALLEY OF ETHIOPIA

Abstract: Land degradation and climate change is the global challenge, where their impact is profoundly seen in developing countries including our country (Woolf et al., 2018). The Ethiopian Productive Safety Net Program (PSNP) is one of the national climate smart initiatives (CSI) implemented to address the persistent land degradation and climate challenges in the country. However, the PSNP effect on Land Use Land Cover (LULC) changes and its carbon storage potential is not yet studied at l...

WOODY SPECIES DIVERSITY AND CARBON STOCK POTENTIAL OF AGRI-SILVICULTURE OF FEDIS DISTRICT, EASTERN ETHIOPIA

Abstract: Previous vegetation studies and their ecosystem services have concentrated largely on natural ecosystems, with less emphasis on managed areas like agricultural systems. Moreover, the protection and conservation of vegetation would be not only successful in protected areas alone but also in the agriculture environment and surrounding it. More recently, human-altered ecosystems such as conventional agroforestry like agri-silviculture have become increasingly conscious of their abilit...

MANAGEMENT OF MEXICAN BEAN BEETLE, Zabrotes subfasciatus (Boheman) (Coleoptera: Chrysomelidae) WITH BOTANICALS AND HOST PLANT RESISTANCE IN COMMON BEAN (Phaseolus vulgaris L.)

Abstract: Common bean is an essential crop for food security, nutrition, and country economy mainly for Sub-Saharan African’s smallholder farmers. However, the production and productivity of common bean is mainly constrained by post-harvest loss induced by Mexican bean beetle. Thus, the objectives of this study were to evaluate the effectiveness of Plant seed powders (neem, Hochst and wild marigold), leaf powders (sweet fennel and broad-leaved croton), plant essential oils (neem and Hochst...

ANALYSIS OF RAINFALL VARIABILITY, FARMERS PERCEPTION AND ADAPTATION STRATEGIES IN DARO LEBU WOREDA, WEST HARARGHE ZONE, EASTERN ETHIOPIA

Abstract: Understanding the influence rainfall variability on agricultural production is needed to cope with current and future changes in rainfall variables especially in countries that largely rely on rain fed agriculture. The objective of this study was to analysis rainfall variability, farmers’ perception and adaptation strategies in the Daro Lebu Woreda. To achieve this objective, historical climate data from 1995-2019 were obtained from Ethiopian National Metrological Agency. In addi...

THE IMPACT OF LAND USE- LAND COVER CHANGE ON RANGELAND ECOSYSTEM SERVICES IN SHINILE DISTRICT, SITI ZONE, SOMALI REGIONAL STATE, ETHIOPIA

Abstract: The aim of this study was to assess the dynamics of land-use-land-cover change and its effect on the rangeland ecosystem services of Shinile district. Landsat images of 1999, 2009, 2019 were downloaded from USGS earth explorer with a spatial resolution of 30 m and preprocessed and classified by using ERDAS imagine software to identify land cover types. The ground control points were collected from the field to assist the land use-land cover classification. In addition, a key inform...

SOCIAL NETWORK IN PLURALISTIC SEED SYSTEM FOR CLIMATE CHANGE ADAPTATION: EASTERN OROMIA, HARARGHE, ETHIOPIA

Abstract: The issues of a social network, pluralism in the seed system, and adaptation to climate change are becoming more commanding in the tragedy of climate change and variability. Adaptation decisions are often based on interactions between people and their collective activities, which are mediated through informal networks from which resources may be derived and facilitate access to information needed for adaptation. The objective of this study was to analyze the role of social networks...

COMPARATIVE ANALYSIS OF DIVERSITY, USES AND REGENERATION STATUS OF WOODY SPECIES, AND SOIL ORGANIC CARBON STOCK OF CONSERVED AND NON-CONSERVED DIKICHA SUB-WATERSHEDS: BORANA ZONE, SOUTHERN E

Abstract: A study was conducted in Dikicha Kebele, Miyo District, Borana Zone of Southern Ethiopia, to compare woody species diversity, uses, and regeneration status, and soil organic carbon of conserved and non -conserved adjacent sub-watersheds. In each sub-watersheds, four transect lines were systematically laid parallel to each other at 200 m interval. Ten nested sample plots were established at interval of 50m along each transect lines. The main plots had 30m X 30m while sub-plots had 5...

EFFECT OF LAND USES ON SELECTED SOIL PROPERTIES AND ORGANIC CARBON STOCK IN LIBEN DISTRICT, EAST GUJI ZONE, SOUTHERN ETHIOPIA

Abstract: Evaluating the effect of land uses on the soil physicochemical properties and organic carbon stock under different land use types are crucial option for sustainable soil and land management, and fighting climate change by improving soil health and quality. In the Liben District of southern Ethiopia, a study was carried out to investigate the spatial variability of selected soil physicochemical properties and organic carbon stock under different land use types. In total, 81 undistur...

ASSESSMENT OF SALINITY STATUS OF SOILS AND IRRIGATION WATER QUALITY IN DRY SEASON WHEAT PRODUCTION IN SELECTED DISTRICTS OF WEST HARARGHE ZONE, ETHIOPIA

Abstract: Soil salinity problem is predominantly severe in developing countries, particularly in arid and semiarid regions, resulting in short-term damage to people's livelihoods and long-term repercussions on the country's food security. It is also a major challenge in Ethiopia and west Hararghe in particular where small-scale irrigated agriculture is practiced. Against this backdrop, this study was conducted to assess the soil salinity and irrigation water quality in dry season wheat produ...

FARMERS’ RESILIENCE TO CLIMATE VARIABILITY AND THEIR PERCEPTIONS TOWARDS ADOPTION OF CLIMATE SMART AGRICULTURAL PRACTICES IN KERSA DISTRICT, EAST HARARGHE ZONE, OROMIA REGIONAL STATE, ETHI

Abstract: In Ethiopia agriculture is highly vulnerable to climate variability. This is mainly due to its mere dependence on rainfall and low level of technology adoption. Thus, the aim of this study was to investigate farmers’ resilience to climate variability and their perception towards adoption of climate smart agricultural practices in the study area. A multistage sampling technique was employed to select sample households. Accordingly, 204 sample households were selected using simple ...

SOLID WASTE MANAGEMENT SYSTEM AND ASSOCIATED RISKFACTOR: THE CASE OF ADAMA CITY ADMINISTRATION, OROMIA REGIONAL STATE, ETHIOPIA

Abstract: Solid waste management is critical issue faced by urban areas worldwide. The rapid increases of population size, urbanization and industrialization resulted in increased generation of solid wastes. Consequently, solid wastes and its management became major public health, environmental and socio-economic concern.This study aimed to investigatethe solid waste management system and associated risk factor of the environment, public health and socio economic aspects;in the case of Adama...


46 - 60 Of 1929 Results