Environmental & Physical Sciences

Environmental & Physical Sciences Research Papers/Topics

Volume And Biomass Estimation Models For Tectona Grandis Grown At Longuza Forest Plantation, Tanzania

ABSTRACT  Quantifying tree volume, biomass and Carbon (C) stocks potential of tree crops by using allometric models is vital for understanding the contribution of forests on climate change mitigation effort. The existing allometric models for accurate estimations of total tree volume and total tree biomass for Teak (Tectona grandis) has limitation of application such as models being developed from few sample trees for model development and covered narrow range of diameters and excluded trees...

Determining the Local Importance of Non-Timber Forest Products Using Two Different Prioritization Techniques

Abstract Among the key uncertainties in the sustainable management of forest for non-timber forest products (NTFPs) is the high diversity of species and paucity of information on indigenous use pattern. In designing appropriate strategies for sustainable management of non-timber forest products, therefore, it is important to identify species with high local importance with the potential for sustainable and profitable extraction in a managed system. In this study, we assessed the use of two q...

Implications Of Land Use Land Cover Change On The Biodiversity Of Kibasira Swamp In Kilombero Valley, Tanzania

ABSTRACT Sustained wetland functioning needs proper land use planning which in its best requires integrated land management. High anthropogenic pressures on the Kibasira Swamp may undermine its potential in biodiversity conservation and ecosystem services provisioning. A study was conducted to investigate the implications of land use/cover on the biodiversity of Kibasira Swamp. Landsat TM and ETM+ images for the period 1990, 1998 and 2011 were used to quantify the changes. Plants and bird sp...

Boat Terminal, Port-Harcourt “A Study Of Circulation”

ABSTRACT Rivers State, The ‘Treasure Base Of The Nation’ and a commercial nerve centre of the Nation has over the years been confronted with the problem of rapid growing human and vehicular traffic congestion. This problem is largely caused by the rate of rural-urban migration of people into Rivers State. In fact, recent statistics have shown that over 10,000 people enter Rivers State on a daily basis. This figure results to an estimated five million people that move around Rivers State ...

Coal City Cinema Complex, Enugu, Enugu State (A Study On In Tegrating Cinema Into Nigerian Lifestyle)

ABSTRACT Chukwuenyem, (2007) "People have always sought to portray, in as possible, beliefs, lifestyles, social ills, history, and simple pleasant fiction, through many art forms especially drama recently films. For such exposition the cinema suffices as an invaluable tool." Cinema is an important tool in building cultural institutions, and reinforcing cultural pride. The cinema could be used to heal the psychological wounds created by slavery and colonialism and to provide moral upliftment....

Effectiveness of selected vegetation cover types as sediment filters: a case study of lake victoria shore line, magu district, tanzania.

ABSTRACT A study was conducted in Ihale Village, Magu District, Tanzania aimed to assess the effectiveness of selected vegetation cover types as Vegetative Buffer Strip Filters and their corresponding vegetation strip widths in filtering sediment delivery that are likely to enter the surface waters of the Lake Victoria from agricultural lands. Sediment laden runoff plots measuring 2 m by 20, 15, 12.5 and 10 m were established to determine the effectiveness of the selected filters and strip f...

An Assessment Of Diversity, Abundance And Distribution Of Herpetofauna In The Serengeti National Park, Tanzania

ABSTRACT An assessment of diversity, abundance and distribution of herpetofauna in grassland, kopjes, woodland, riverine forest and wetlands habitats of Serengeti National Park (SENAPA), Tanzania was conducted between December 2012 and March 2013. Drift fence with pitfall, wire mesh funnel traps, active search and visual encounter survey, road survey and purposive point count methods were used to obtain data for this study. Besides, focus group discussion and literature review were used to s...

Aggregate stability of Nkpologu sandy loam soil under different soil and crop management systems

ABSTRACT A study was conducted in the runoff plots at the University of Nigeria Nsukka Teaching and Research Farm, in 2010 and 2011 to monitor the changes in aggregate stability, and some selected physicochemical properties of Nkpologu sandy loam soil under different cover and soil management systems. The management systems were bare fallow (BF), grass fallow (GF), legume (CE), groundnut (GN), sorghum (SM), and cassava (CA) cultivation. Following the characterization of the soil of the study...

Flood Risk And Vulnerability Assessment Of Owerri Imo State

ABSTRACT Flood is a water related natural hazard that affects a wide range of human activities. In the recent past many communities in Owerri have suffered losses as a result of flood. This work utilized Remote Sensing and GIS in flood risk mapping. Data on environmental indices were integrated in a GIS to perform risk / vulnerability assessment. The flood risk map produced and the ground truthing carried out confirmed that the area with the highest flood risk is located within CBN quarters,...

Local Communities’ Perceptions On Lantana Camara And Management Responses In East Usambara, Tanzania

ABSTRACT Lantana camara is one of the alien invasive species introduced to East Usambara about 100 years ago. The species is locally increasing in abundance and spatially advancing to new areas threatening the livelihoods of local communities and biodiversity in nearby Amani Nature Reserve. This study assessed local communities‟ perceptions on Lantana camara focusing on its origin, pathways, socio-economic impacts and management responses in East Usambara. Data was collected through househ...

Models For Estimating Tree Volume, Above- And Belowground Biomass For Acacia-Commiphora Woodlands In Same District, Tanzania

ABSTRACT Reduced Emissions from Deforestation and Degradation (REDD) framework demands measuring of carbon stock changes. In most cases, estimates of carbon stocks rely on volume and biomass estimation allometric models. Although species-specific and some generic models for biomass and volume estimation have been developed for some vegetation types such as Miombo woodlands, their use in Acacia-Commiphora woodlands in dry areas is questionable as they comprise short-height trees with small to...

Factors Affecting Pine Resin Productivity And Its Potential As Source Of Revenue In The Forest Sector Of Tanzania: A Case Study Of Sao Hill Forest Plantation

ABSTRACT  Tanzania is rich in pine forests which have the potential to produce valuable resin. In recent years Tanzania has embarked on commercial resin tapping at Sao Hill Forest Plantation. However, current information on resin tapping in the country is scanty and unreliable. Knowledge of factors that affect resin productivity is important for it is those factors that can be manipulated to enhance resin yield. The focus of this study was to fill this knowledge gap by exploring some pine tr...

Seismic Facies Classification And Identification Using Neural Net And Principal Component Methods In The Bemba Field In Niger Delta, Nigeria

ABSTRACT Seismic facies classification was done on 3D Prestack Time Migrated seismic data (PSTM) acquired in 1990 in the Bemba Field in the Costal Swamp Depobelt of the Niger Delta, with the aid of STRATIMAGIC™ ( a 3D stratigraphic interpretation tool) and VOXELGEO™ ( a Volume visualization tool) softwares. Three (3) horizons E2000, F2000, G1000 were interpreted. To clearly delineate and control the quality of the auto-tracked picks, horizons attributes (amplitude, dip and azimuth maps) ...

Analysis Of Housing Demand In Enugu Metropolis, Enugu State, Nigeria.

ABSTRACT This study was aimed at empirically identifing the determinants of housing demand in Enugu metropolis. To this end, the objectives of the study were to: (i) examine the trend of housing demand in Enugu Metropolis, (ii) identify factors that influence housing demand (determinants) in Enugu metropolis, (iii) determine whether there is variation in housing demand among various income groups (high, medium and low) in Enugu metropolis and (iv) identify residents’ perception of the hous...

Verification Of Medium-Range Weather Forecasts Over Tanzania

ABSTRACT There are several weather forecasting systems within and outside Tanzania issuing medium-range rainfall forecasts. However, few attempts have been made to evaluate the accuracy of these forecasts. Hence the major objective of this study was to evaluate some selected medium-range rainfall forecasts and forecasting systems issuing those forecasts. Based on the above objective, the study could firstly evaluate medium-range rainfall forecasts in selected bimodal and unimodal areas of Ta...


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