Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 38 for “"Semi-arid areas"”.
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Effects of dynamic vegetation and topography on hydrological processes in semi-arid areas
… dynamics occurring in the complex terrain of a semi-arid area characteristic of central New Mexico. The study constructs a dynamic model of coupled interactions, [tRIBS+VEGGIE], that considers essential water and energy processes over the river basin and links them to the basic plant life …
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Spectral Mixture Analysis for Monitoring and Mapping Desertification Processes in Semi-arid Areas in North Kordofan State, Sudan
Multi-temporal remotely sensed data (MSS, TM and ETM+)were used for monitoring and mapping the desertification processes in North Kordofan State, Sudan.A liear mixture model (LMM) was adopted to analyse and the desertification proccesses by using the image endmembers. interpretation of ancillary …
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The Challenges of Promoting and Adopting Biogas Technology as Alternative Energy Source in Semi-Arid Areas of Tanzania: The Case of Kongwa and Bahi Districts of Dodoma Region
… on other factors including; information dissemination, access to credits, motivation and coordination of sectors and stakeholders dealing with biogas dissemination.Based on the findings, this study recommends the following; first, the ministry responsible for energy should improve policy …
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Private game farms and the tenure security of workers and dwellers in Cradock - implications for tenure reform in South Africa
… the thesis is the extreme land question of the semi-arid areas. At the empirical level, the thesis situates the Cradock farm conversion trend within the land conquest and labour histories of the semi-arid areas. It argues that land and labour histories of different regions will inform the manner …
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Evaluation of physiological and morphological basis for drought resistance in maize and sorghum
… factor to maize and sorghum production in the semi-arid areas. This study evaluates the physiological (water relations, gas exchange characteristics, membrane leakage), biochemical (antioxidant protection mechanisms and photosynthetic pigment compositions) and seed viability and quality …
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Late quaternary vegetation history and palaeoenvironments of the Cederberg Mountains, South Africa : evidence from hyrax (Procavia capensis) middens
… sources ofpalaeoenvironmental information in arid and semi-arid areas, and have been successfully used in various parts of southern Africa. Hyrax middens from the De Rif site in theCederberg Mountains of the south-western Cape have been collected and sampled. Through the application of pollen …
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Holocene vegetation and palaeoenvironments of the Southern Cederberg mountains of South Africa : palynological evidence from fossil hyrax (Procavia) dung middens
… peat bogs) there are usually abundant. However arid and semi-arid regions (such as southern Africa) lack fossil pollen because of the scarcity of pollen preserving bodies. This attribute results in difficulties in palynological studies regarding the late Quaternary vegetation and …
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Time-use and wellbeing in Onesi, Namibia
… of sub-Saharan Africa and particularly so in semi-arid areas. As a result, failure to appreciate how time-use and wellbeing are experienced by the rural population in semi-arid areas impedes a full understanding of how rural inhabitants spend their time and how this makes them worse off or …
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Thermal property of EDS film and its effect on the removal of dust particles as a function of surface temperature
Solar energy is used worldwide. Deserts and semi-arid areas are well suited for solar energy harvesting. High dust concentration in deserts, where many large solar plants are located, causes a loss of energy conversion efficiency by soiling solar collectors. Electrodynamic Screen (EDS) film when …
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Urban Water History of Shahjahanabad, Delhi (1639-1857): Situating Mughal Hydrology and Urbanism in the ‘Persianate World’
… have historically managed water resources in arid/semi-arid areas of the ‘Persianate world’. The methodology incorporated archaeological records, textual records, and a systematic surface survey of the 150 km canal landscape between Karnal and Delhi, together with documentation of associated …
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An analysis of vegetation pattern and its relationship to NDVI data in the Namaqualand area, South Africa
… Africa is unique in comparison to other similar semi-arid areas of the world. It has a high biodiversity and endemism and is consequently an area of interest for a growing number of conservation initiatives. Climate plays an important role in influencing the phenology and growth of the vegetation …
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Analysis of Human Influence on Drought Conditions in the Upper Colorado River Basin (Texas)
Globally, it is expected that arid and semi-arid areas will face increasing frequency of drought through the 21st century. Drought is normally attributed to climatic factors. However, humans constantly alter hydrologic systems through manipulating and consuming water, which can also cause drought. …
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The use of remote sensing and GIS for water resources management in large semi-arid regions: A case study of the Lake Chad Basin, Africa.
… the management of the water resources in large semi-arid regions. In the Lake Chad Basin, Africa, it is demonstrated how remotely sensed data can contribute significantly to a groundwater problem, something which historically has not often been achieved, particularly in semi-arid …
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An investigation on the potential interactions between colophospermum mopane and its neighbouring understory vegetation
… species was carried out focussing on the two semi-arid areas where it is dominant and prevalent; the main areas considered for this current study are Mopani Bushveld and Tshiungani both located in the Limpopo Province of South Africa. The study focussed mainly on the interaction of C. mopane …
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Law, technology and water conflicts in developing societies: a case study of tank systems in Tamil Nadu
… for irrigation and many other purposes in semi-arid areas. The thesis adopts a historical approach to study the development of law, particularly property rights, and takes an empirical approach to investigate the tank conflicts. Archival documents on irrigation development, Case laws, Focus …
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Land degradation in drylands : resettlement and borehole provision in Gam, Namibia
… and environmental problem, with more severity in arid and semi-arid regions of Africa. Throughout the dryland regions of Africa natural resources are deteriorating at an accelerating pace. This ecological degradation is caused by overexploitation of resources, and severely undermines Africa's …
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Patterns of plant diversity and their management across South African Rangelands
… and disturbance effects across the mesic to semi-arid rangelands east of the escarpment in southern Africa. Results were compared to a well studied North American tallgrass prairie, Konza. Sampled between 1 m2 and 1000 m2 across 25 sites, species and family richness increased with mean annual …
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