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The failure of public sector investment projects in Sub-Saharan Africa can often be described in large measure as a technological one, where technology is defined not just in the narrow sense of alternative factor proportions, but in the wider terms of scale and import intensity as well. In confining itself mainly to the economic dimensions of the problem, the existing literature fails to consider the reasons for the extraordinarily rapid and widespread expansion of the public sector in Sub-Saharan Africa and it hence ignores the possibility that this expansion might itself be related to the observed patterns of technological behaviour in the sector. Such a possibility, I suggest, resides in the political and institutional compulsions that drive industrial firms in the public sector to increase the size of their operations.  相似文献   

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Because of its diverse geological formations, climates, and soils, Iran is home to outstanding biodiversity. National conservation started in Iran over fifty years ago and today nearly 10 percent of the country is protected. However, biodiversity in Iran is threatened, with about 100 species of vertebrate fauna vulnerable or endangered. Increased population and human activity, climate change, drought, desertification, agriculture, poaching, and economic sanctions have helped create this crisis. Many of these causes can be mitigated through better planning, sustainable policies, and increased civil society and local engagement. Promoting awareness about the impacts of human practices will also be important for the long-term sustainability of Iran’s ecosystems. Iranian conservation NGOs have already taken an active role in preserving biodiversity.  相似文献   

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In Australia, the Commonwealth and State governments are increasingly devolving natural resource management (NRM) responsibilities to regional bodies. This move has led to the development of regional NRM plans. Native vegetation and biodiversity conservation, along with soil, pasture and water resources, are key components of the regional NRM plans in Queensland's extensive rangelands. This paper outlines and applies a set of criteria for evaluating the native vegetation and biodiversity content of accredited regional NRM plans for Queensland's rangelands. The evaluation showed considerable variation in the comprehensiveness of the information and knowledge base and management action targets among plans, including the poor articulation of impacts of excessive grazing pressure on biodiversity. The NRM plans lacked effective integration of natural resource, native vegetation and biodiversity conservation targets and actions. Several regions had too many biodiversity targets, many of which were poorly integrated. This is symptomatic of a limited understanding of rangelands as ecological systems and the lack of an integrated planning framework. We conclude regional NRM planning is not a ‘silver bullet’ for biodiversity conservation in the rangelands, but rather, it is the beginning of a long road to address complex, multi‐scale problems at a regional level.  相似文献   

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The evolutionary theory of land rights can be considered the dominant framework of analysis used by mainstream economists to assess the land tenure situation in developing countries, and to make predictions about its evolution. A central tenet of this theoryis that under the joint impact of increasing population pressure and market integration, land rights spontaneously evolve towards rising individualization and that this evolutioneventually leads rightsholders to press for the creation of duly formalized private property rights — a demand to which the state will have an incentive to respond. This article looks critically at the relevance of the evolutionary theory of land rights as currently applied to Sub-Saharan Africa. In particular, the question of whether the establishmentof private property rights is an advisable structural reform in the present circumstancesis examined, in the light of evidence accumulated so far. It will be argued that most of the beneficial effects usually ascribed to such a reform are grossly over-estimated and that, given its high cost, it is generally advisable to look for more appropriate solutions that rely on existing informal mechanisms at community level.  相似文献   

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This article reviews discussions concerning some of the main methodological difficulties surrounding the evaluation of structural adjustment policies, before suggesting a procedure to ‘save’ empirical discussion about new patterns of economic and social relations. In this light it proceeds to examine evidence gathered by the structural adjustment research programme of Nordiska Afrikainstitutet (Scandinavian Institute of African Studies) on the changing character of the ‘private sector’ and of the voluntary development sphere in contemporary Africa. The main conclusions are that, in what can be called ‘adjustment situations’, the main tendencies in these spheres are for a rise of trading capitals enjoying illicit relations to the state and for a privatization of local development. The article concludes with an argument that, had adjustment been implemented in a fuller and more consistent way, these tendencies would probably have been still more pronounced.  相似文献   

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Chinese Engagement with Africa: The Case of Madagascar   总被引:1,自引:0,他引:1  
Using field work in Madagascar as the foundation for a case study, two U.S.-based geographers examine the complex relations developing between many African nations and the Chinese government as well as ethnic Chinese citizens and guest-workers who live and work in Africa. The study investigates changes in the perceptions of Malagasy citizens of the Chinese presence and long-term effects of Chinese investments in Madagascar's economy. Although the Chinese living in Madagascar tend to be viewed as "cut from the same cloth," the study demonstrates that there is considerable differentiation depending on the length of residence, rates of intermarriage with Malagasy citizens, and feelings toward the recent "economic" immigrants and guest workers. The paper integrates archival data with interviews involving recent Chinese guest-workers living in Antananarivo in 2011 as well as results of a systematic survey of most active French-language "blogs" dedicated to Sino-Malagasy relations, with the goal of presenting a comprehensive account of past and present Chinese influences and behavior in Madagascar.  相似文献   

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Examination of African barbed bone points recovered from Holocene sites provides a context to interpret three Late Pleistocene occurrences from Katanda and Ishango, Zaire, and White Paintings Shelter, Botswana. In sites dated to ca. 10,000 BP and younger, such artifacts are found widely distributed across the Sahara Desert, the Sahel, the Nile, and the East African Lakes. They are present in both ceramic and aceramic contexts, sometimes associated with domesticates. The almost-universal presence of fish remains indicates a subsistence adaptation which incorporates a riverine/lacustrine component. Typologically these points exhibit sufficient similarity in form and method of manufacture to be subsumed within a single African tradition. They are absent at Fayum, where a distinct Natufian form occurs. Specimens dating to ca. 20,000 BP at Ishango, possibly a similar age at White Paintings Shelter, and up to 90,000 BP at Katanda clearly fall within this same African tradition and thus indicate a very long-term continuity which crosses traditionally conceived sub-Saharan cultural boundaries. L'étude des pointes barbelées en os del' Holocène africaine fournit un contexte à l'interprétation de trois gisements du Pleistocene superieure, notamment, Katanda et Ishango (en République Démocratique du Congo, ex-Zaire), et White Paintings Shelter au Botswana. Cettes pointes ont une distribution étendue à travers le Sahara, le Sahel, le Nil et les grands lacs du rift d'Afrique orientale, notamment sur certains sites datant de 10,000 ans avant notre ère. Ces pointes sont associées avec des types d'industries céramiques ou acéramiques, avec ou sans squelettes de faune domestiques, mais toujours avec des squelettes de poisson, indiquent une subsistence comportant des ressources lacustres ou riveraines. Sur le plan typologique, cettes pointes présentent une telle ressemblance, soit de forme, soit de manufacture, qu'elles constituent une tradition unique africaine. Au Fayum en Egypte, les formes des pointes rappellent, par contre, plutôt les series Natufiennes du Levant. Les pointes barbelées d'Ishango, datant de 20,000 ans environ, celles de White Paintings Shelter, datant probablement de la même époque, et celles de Katanda datant au maximum de 90,000 ans BP, appartiennent à la même tradition africaine, ce qu montre ainsi l'existence d'une continuité de très longue durée àtravers les frontières culturelles traditionelles.  相似文献   

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Many of the world's most valuable biodiverse areas are successfully managed by indigenous communities, often under peculiar property rights structures. In many cases, these communities are economically disadvantaged, even by local standards. But can particular local property rights regimes which are ecologically successful also allow communities to compete productively in market economies? The extractive reserves of the Brazilian Amazon offer an opportunity for investigating the connections between property rights, conservation and development in the context of tropical forests. This article aims to analyse whether the existing property rights in these reserves — an idiosyncratic mixture of public, collective and private property rights — can support the explicit development aim of a competitive, yet sustainable, exploitation of the area's natural resources. The analysis identifies three promising development paths open to extractive reserves, but points to a fundamental contradiction between the static structure of the property rights system and the dynamic nature of two of these paths. The current design of internal property rights fails to take into account the broader economic context in which reserves must generate a viable revenue stream. If extractive reserves are expected to develop without reliance on external aid, then changes to the property rights structure both inside and outside the extractive reserves have to be explicitly considered.  相似文献   

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Abstract

The impact of human activities on the environment is perhaps now reaching its greatest level of awareness in human history. There is concern regarding health effects of pollutants generated by industry, climate change related to burning of fossil fuels and effects of anthropogenic activities in terms of promoting the extinction of biological species. Proposals are being put forward at local, national and international levels to preserve biodiversity. It is commonly believed that human activities, if not controlled, will lead to dramatic decreases in the earth's biodiversity. In this report, temporal perspectives of biodiversity (e.g. from palaeontology) are emphasized both as reasons for conservation and as possible errors of reasoning in conservation debates. Questions and novel implications related to an integral view of humans as a part of nature are also presented in the context of related environmental issues.  相似文献   

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Droughts are unlikely to influence support for political violence unless they coincide with unfavourable social and political conditions. In this article I suggest that support for violence in times of drought depends on people's relationship with their government and the way in which this relationship determines their vulnerability to adverse climatic shocks. Droughts impose serious economic pressures on affected people, especially in Sub-Saharan countries, where access to alternative sources of water is often limited. People who enjoy good relations with the sitting regime and who benefit from a wide range of public services are more likely to overcome these pressures. On the other hand, politically neglected, marginalised and disaffected people have many more difficulties in coping with drought and are likely to blame their government for it. This, in turn, can pave the way for endorsing more radical attitudes and even violence against the government and its (presumed) political supporters. The results of my analysis partly confirm this idea. Exposure to drought per se does not seem to influence attitudes towards political violence in a statistically significant way. However, I find both people who are politically discriminated against and people who do not trust their head of state to be more inclined to endorse political violence when hit by severe drought. These findings, which are consistent across a number of alternative model specifications, show that fragile state-citizen relations play an important part in the processes linking drought exposure and support for political violence.  相似文献   

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This article describes the framework adopted for the socio-economic assessment of protected areas intended to safeguard biodiversity. This framework, which can be described as a three-tiered approach to conservation, is applied to the process of assessment and establishment of a protected area (PA) in Vanuatu. The potential benefits that the landowners of the PA could derive from logging activities, and the subsistence values derived from the PA are considered. It appears that if the PA was to be established without the payment of any compensation, the landowners would face substantial net costs. During the research process, it was suggested that the Government of Vanuatu could take up a lease on the land to compensate the landowners for the loss of potential logging royalties. When the benefits accruing to the landowners from a lease agreement are compared with the foregone logging royalties, it is found that the net present value of a seventy-five year lease agreement is approximately equivalent to the net present value of logging royalties.  相似文献   

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This paper presents an update on some of the activities that have taken place since a World Bank report; “Guidelines for Education and Training in Environmental Information Systems in Sub-Saharan Africa: Some Key Issues” was published and provides details on the current situation. It shows how organizations such as the African Association on Remote Sensing of Environment, International Society of Photogrammetry and Remote Sensing, European Association of Remote Sensing Companies, Group on Earth Observation, and several others have helped to increase manpower resources in the region and strengthened institutional capacity in the field of geoinformatics, through capacity building, technology transfer, international cooperation and the provision of internal African resources. After reviewing what has happened in the field of geoinformatics education and training, we focused on current initiatives taken and challenges in five Sub-Saharan countries: Ethiopia, Nigeria, South Africa, Tanzania, and Zimbabwe. We reviewed GIS education and training in the private sector, government, information communications technology in higher education institutions, GIS application areas and challenges facing GIS education and training. Findings show that; change should involve education stakeholders in all levels of education and curriculum quality, regional and international cooperation through exchange programs, should be a priority for Sub-Saharan Africa countries.  相似文献   

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Empirical tests of the “resource curse” thesis have provided inconclusive evidence for the claim that natural resource abundance increases the risk of social conflict. The present article argues, based on a novel political economy framework and a new data set, that it is important to analyze how states regulate the access to their natural resources to understand the interrelationship between resources and public resistance against resource extraction arrangements. We claim that international rather than state resource ownership fosters the regional protest potential and overshadows the efficiency gains that foreign investment might create. Especially the siphoning of resource rents to international owners instigates resentment among the local population. Distinguishing between private, public, domestic and international ownership arrangements, we assess the effects of natural resources control rights regimes on state repression using new GIS-based data on diamond and gold mines as well as oil and gas fields in Sub-Sahara Africa. Our multilevel analysis shows that repression as an answer to societal dissent is particularly likely in grids hosting international oil companies. Furthermore, we find that international oil firms further state repression especially under insecure property rights.  相似文献   

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The mounting evidence for climate change has put the security implications of increased climate variability high on the agenda of policymakers. However, several years of research have produced no consensus regarding whether climate variability increases the risk of armed conflict. Many have suggested that instead of outright civil war, climate variability is likely to heighten the risk of communal conflict. In particular, erratic rainfall, which reduces the availability of water and arable land, could create incentives for violent attacks against other communities to secure access to scarce resources. Yet, whether groups resort to violence in the face of environmentally induced hardship is likely to depend on the availability of alternative coping mechanisms, for example through market transfers or state accommodation. This suggests that the effect of rainfall anomalies on communal conflict will be stronger in the presence of economic and political marginalization. We evaluate these arguments statistically, utilizing a disaggregated dataset combining rainfall data with geo-referenced events data on the occurrence of communal conflict in Sub-Saharan Africa between 1990 and 2008. Our results suggest that large negative deviations in rainfall from the historical norm are associated with a higher risk of communal conflict. There is some evidence that the effect of rainfall shortages on the risk of communal conflict is amplified in regions inhabited by politically excluded ethno-political groups.  相似文献   

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Despite the antiquity of domestic cattle in the Sahara-Sahel, archaeological evidence from two sub-Saharan regions indicates that the first pastoralist colonization of sub-Saharan Africa may not have proceeded so smoothly as modern appearances suggest. The first appearance of cattle-based economies seems to have been delayed by as much as a thousand years after the first appearance of small stock, in both eastern and southern Africa. This article reviews the relevant archaeological evidence and argues that the lag in successful introduction of cattle stems from new animal diseases encountered by pastoral colonists entering biogeographic zones south of the Sahel. Diseases that are often fatal to cattle, including wildebeest-derived malignant catarrhal fever (WD-MCF), East Coast fever (ECF), foot-and-mouth disease (FMD), and Rift Valley fever (RVF), as well as trypanosomiasis, are described as probable barriers to the early entry of cattle-based economies into these regions.Malgré l'antiquité des animaux domestiques dans le Sahara-Sahel, les données archéologique de deux régions subsahariennes indiquent que les premières colonisations pastoraux des zones au sud du Sahel ne se propagèrent pas aussi promptement que suggèrent les apparences actuelles. En l'Afrique orientale et en l'Afrique du sud, l'apparition d'économies basées sur l'élevage des gros bovins paraît être retardée de quelque mille ans par rapport à l'apparition des petits ruminants domestiques dans ces mêmes régions. L'article recense les données archéologiques pertinentes et propose que le délai de l'introduction effective des gros bovins fût causée par des nouvelles maladies vétérinaires rencontrées par les premiers colonisateurs pastoraux entrant dans les zones biogéographiques au sud du Sahel. Des maladies fréquemment fatales aux gros bovins, telle que le coryza gangreneux, la thèleriose, la fièvre aphteuse, l'arbovirus des Bunyaviridae, aussi bien que la trypanosomiase, sont proposées comme des obstacles probables à la diffusion des économies à gros bovins dans ces régions.  相似文献   

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