Browsing Environmental systems and natural resources management by Issue Date
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Moleele, N.M.; Mainah, J. (Elsevier http://www.linkinghub.elsevier.com/retrieve/pii/S0140196302910992, NaN, 2003)[more][less]
Abstract: The Kalahari ecosystem is characterized by natural resource conflicts and land-use pressure resulting from intensification of human activities. This paper addresses three issues of concern associated with the Kalahari ecosystem resource management: (i) the major land-use/land cover shifts in the Kalahari ecosystem since 1970 and the resulting pattern in vegetation species composition, cover and density; (ii) the possible explanations for the observed shifts; and (iii) the possible resource conflicts likely to arise. Data collection involved the comparison of two sets of panchromatic photographs along two transects (Hukunsti–Ngwatle and Tshane–Tsabong) to study land-use/cover shifts that have occurred in the Kalahari ecosystem between 1971 and 1986. Secondly, the nature of possible conflicts resulting from population pressure and associated patterns of land-use was investigated by making observations on selected environmental variables along a 300km transect with diverse environments comprising different-sized settlements, vegetation communities and land-uses. Land-use/land cover shifts have occurred within the Kalahari ecosystem as evidenced by the two transects analysed in this paper. The main changes are the retreat of grass cover up to 18 kms from settlements and the increase in thorny and non-thorny woody encroachers closer to the settlements. In the Matsheng area, land-use/land cover gradients reflect marked differences in human pressure. For instance, while settlements (kraals/households) and fields around Tshane (smaller and dwindling settlement) have declined to 5% at the 4 km distance in 1986, these landuses account for 22?3% of land cover at 4 km around Hukuntsi (bigger and expanding village). Five major vegetation communities were identified using key plant species during the dry season. However, these communities do not have distinct land-use activities associated with them. Cattle densities were higher in communities found far away from settlements and water points where the grass cover was abundant. Cattle graze far from settlements to obtain quality fodder and trek to the water points around village pans or at cattle posts. There are no definite boundaries between vegetation communities and land-use activities, hence a lot of interaction between activities of these zones depends on the dispersion of resources. Shifts in land-use/cover changes can be accounted for by anthropogenic activities (arable agriculture, livestock grazing and human settlements) enhanced by natural factors like seasonal variations and prolonged droughts of the mid-1980s. It is argued in this paper that potential remedial measures include biosphere conservation areas, resource zoning and resource modeling plans to determine land suitability. URI: http://hdl.handle.net/10311/411 Files in this item: 1
Moleele_JAE_2003.pdf (1.813Mb) -
Phuthego, T.C.; Chanda, R. (Elsevier http://www.linkinghub.elsevier.com/retrieve/pii/S014362280300033X, NaN, 2004)[more][less]
Abstract: The advent of community-based natural resource management (CBNRM) in Botswana in the late 1980s ushered in a new paradigm in natural resource management. The strategy marked a change from state-controlled to community-controlled wildlife management. The expectation is that under community control, local expertise on biodiversity, termed in this paper as traditional ecological knowledge (TEK), plays a significant role that is supposedly facilitated through local institutions and traditional practices. This paper examines the incorporation of TEK in the CBNRM projects in KD 1, which is a controlled-hunting area (CHA) in the north-western part of the Kgalagadi North sub-district, Botswana and illustrates that the projects acknowledge and demonstrate the utility value of TEK in sustainable natural resource management. It concludes that TEK systems and institutions could serve as entry points into sustainable natural resource utilisation and management. This could be achieved through the exploration of cultural practices of the local people and integrating useful aspects into the modern natural resource management expertise. URI: http://hdl.handle.net/10311/418 Files in this item: 1
Phuthego_AG_2004.pdf (1.867Mb) -
Kgathi, D.L.; Kniveton, D.; Ringrose, S.; Turton, A.R.; Vanderpost, C.; Lundqvist, J.; Seely, M. (Elsevier; www.elsevier.com/locate/jhydrol, NaN, 2006)[more][less]
Abstract: The Okavango basin comprises the Cuito and Cubango active catchment areas in Angola, in addition to the Kavango's Okavango non-active catchment in northern Namibia and Botswana. The Okavango River water and its ecosystem resources are critically important sources of livelihoods for people in the basin. Pressures from livelihoods and development are already impacting on the environment. These pressures may increase in the future due to the rapid increase in population, the peace process and associated resettlement activities in Angola, and major development initiatives in Botswana and Namibia. For instance, possible future increase in water abstraction from the Okavango River may affect the long-term environmental sustainability of the Okavango Delta by minimizing channel shifting and thereby reducing spatial biodiversity. The paper argues that while conservation of the natural environment is critical, the pressing development needs must be recognized. The reduction of poverty within the basin should be addressed in order to alleviate adverse effects on the environment. The paper recommends that the development of sustainable tourism and community-based natural resource management initiatives may be appropriate strategies for reaching the Millennium Development Goals of poverty alleviation and achievement of environmental sustainability in the Okavango Basin. These initiatives have a comparative advantage in this area as demonstrated by the performance of the existing projects. URI: http://hdl.handle.net/10311/154 Files in this item: 2
kgathi_j_hydrology_2006.pdf (6.004Mb)license.txt (1.998Kb) -
Hambira, W.L. (Elsevier, http://www.elsevier.com/wps/find/journaldescription.cws_home/413/description#description, NaN, 2007)[more][less]
Abstract: Natural Resource Accounting (NRA) has become an important environmental/natural resources management tool in recent years. It provides information on stocks of a resource available at a particular point in time and what activities the resource is being used for. The conventional System of National Income Accounts (SNA) normally does not capture the cost of depletion, degradation or pollution of natural resources. This encourages unsustainable use of natural resources since the costs are not reflected when assessing the country’s economic performance or development progress. NRA is thus an attempt to integrate environmental issues into the conventional national accounts. The water sector is one sector that could greatly benefit from this natural resource management tool. Botswana has adopted NRA as a natural resource management tool and has so far developed accounts for minerals, livestock and water. The focus of this paper is on Water Accounting (WA) in relation to Integrated Water Resources Management (IWRM). IWRM is concerned with coordinated development and management of water in order to maximise economic and social welfare without compromising the sustainability of ecosystems. WA helps fill data gaps since it provides the required information for IWRM to be achieved. The aim of this paper therefore is to evaluate the Water Accounts of Botswana Report of 2006 to determine the extent to which it can contribute to integrated water resources management. The paper is based on literature review and the results show that: the available water stocks vary depending on rainfall patterns, well fields are over utilised, there has been growth in consumption, and more than 80% of the waste water produced is not being put to use. These results calls for changes in policies, role of institutions and practices pertaining to water resources management which is what IWRM is all about hence the paper concludes that indeed WA can contribute to the realisation of IWRM. URI: http://hdl.handle.net/10311/283 Files in this item: 1
Now showing items 1-4 of 4