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Why does biodiversity conservation matter, and what can be done about it? The article discusses the options in the case of Sub-Saharan Africa, drawing on the results of a Darwin Initiative project on the ecology and economics of biodiversity conservation in the continent. It uses the case of Sub-Saharan Africa to illustrate both the consequences of biodiversity loss and the constraints within which policy-makers operate. To most people the biodiversity loss that matters is not the global extinction of species, but the effects of local change in flora and fauna on watershed protection, soil conservation, habitat, productivity and amenity. For this reason, biodiversity conservation concerns even the poorest communities. But because poverty, indebtedness, insecurity of land tenure and other social conditions affect the way in which people respond to incentives, the policy options for biodiversity conservation may be different in different parts of the world.  相似文献   

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ABSTRACT The paper analyses the industrial performance of two East Asian (South Korea and Taiwan) and three Latin American (Argentina, Brazil and Mexico) newly industrializing countries. It argues that the better performance in East Asia is not due simply to differences in trade orientation or the degree of state intervention, but rather to the effectiveness of intervention. This is explained in terms of the relative autonomy of the state and the structuring of the state apparatus in the two regions. The historically determined class structure and the international context led to much greater state autonomy in East Asia than in Latin America. The last part of the paper shows a number of ways in which this greater relative autonomy has contributed to rapid industrial growth in East Asia in comparison with Latin America.  相似文献   

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The purpose of this paper, prepared as a background document for the UNRISD/University of the West Indies conference on Economic Crisis and Third World Countries, is to provide a framework for consideration of societal changes accompanying economic recession and restructuring in Africa, Latin America and the Caribbean over the past decade. It is the central argument of the paper that adaptation to crisis should not be considered a temporary phenomenon, interrupting a single, lineal process of modernization which can be expected to resume its course once current difficulties are overcome. On the contrary, both crisis and adjustment have profoundly modified the structure of incentives within which individuals and households must attempt to ensure their livelihood, encouraging new patterns of behaviour with long-term implications for the nature of the economy, society and political practice. After a brief review of the macroeconomic background of crisis in each region, this central hypothesis is explored through a very preliminary analysis of the changing life chances of various kinds of upper, middle and lower income groups — emphasizing not only the costs but also the opportunities which have been associated with economic restructuring. Some individual and collective reactions to change are then considered, before raising a series of questions concerning the implications of crisis and adjustment for the state and civil society.  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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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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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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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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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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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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The Israeli and Palestinian economies are asymmetrically interdependent. Some scholars argue that the Palestinian economy cannot be viable alone. Others believe that economic links with Israel will promote peace. Supporters of separation argue that these links distort Palestinian development. I show that the current interdependence is associated with a cyclical Israeli-Palestinian violence and Palestinian economic decline. Assuming that an independent Palestinian state forms in most of the West Bank and Gaza Strip, I argue that Israeli-Palestinian relations require economic separation to be stable. Economic separation will deteriorate Palestinian welfare in the short run. Policies to make it viable are considered.  相似文献   

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In this article, I examine the reasons behind public aid to industry in 12 European countries during the period 199–93. 1 build a model based on societal demands for producer subsidies and the wiliingness and constraints of national governments to provide them. The main contribution of this study is the attention to the institutional context within which demand for and supply of public policy takes place. Institutions not only help shape actor preferences to extract "rents" but also fundamentally condition the level and distribution of subsidies.  相似文献   

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《Political Geography》2007,26(6):695-715
The conventional discourse relating climate change to conflict focuses on long term trends in temperature and precipitation that define ecosystems and their subsequent impact on access to renewable resources. Because these changes occur over long time periods they may not capture the proximate factors that trigger conflict. We estimate the impact of both long term trends in climate and short term climatic triggers on civil conflict onset in Sub-Saharan Africa. We find that both operationalizations have a significant impact. Climates more suitable for Eurasian agriculture are associated with a decreased likelihood of conflict, while freshwater resources per capita are positively associated with the likelihood of conflict. Moreover, positive changes in rainfall are associated with a decreased likelihood of conflict in the following year. We also assess the outlook for the future by analyzing simulated changes in precipitation means and variability over the period 2000–2099. We find few statistically significant, positive trends in our measure of interannual variability, suggesting that it is unlikely to be affected dramatically by expected changes in climate.  相似文献   

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