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1.
Recently, Tanzania witnessed a revival of economic planning that explicitly aimed to combine rapid economic growth with accelerated structural transformation of the economy. To achieve these planning targets would require a relatively modest drop in the share of agriculture in GDP, but a dramatic fall in its share in employment by 2025. Tanzanian planners assume that labour is locked in agriculture because agricultural productivity is low, from which they conclude that, to release labour to fuel the expansion of manufacturing, it is imperative to raise agricultural productivity by appropriate land policies, leveraging private investment and developing public–private partnerships. We argue that, analytically, this planning argument leaves out the possibility that causality may run the other way – from high labour retention in agriculture to low agricultural productivity – and that, empirically, the observed patterns inherent in actual processes of economic transformation in Tanzania do not tally well with the assumptions of planners. More specifically, in so far as labour flows out of agriculture, it flows towards informal‐sector activities, both rural and urban, rather than towards formal manufacturing.  相似文献   

2.
Abstract

Does decentralisation promote clientelism? If yes, through which mechanisms? We answer these questions through an analysis of India’s (and the world’s) largest workfare programme, the Mahatma Gandhi National Rural Employment Guarantee Act (MGNREGA), in two Indian states: Rajasthan and Andhra Pradesh (AP). The two states adopted radically different implementation models: Rajasthan’s decentralised one stands in contrast with Andhra Pradesh’s centralised and bureaucracy-led model. Using a mixed method approach, we find that in both states local implementers have incentives to distribute MGNREGA work in a clientelistic fashion. However, in Rajasthan, these incentives are stronger, because of the decentralised implementation model. Accordingly, our quantitative evidence shows that clientelism is more serious a problem in Rajasthan than in AP.  相似文献   

3.
Current funding, mission, and organizational difficulties question the long-run survival of extension and the Land–Grant system. Consolidation of county extension offices is seen as a possible remedy for extension's problems. This paper estimates scale economies and inefficiencies in county extension offices in Kansas using parametric and nonparametric techniques. Large economies of scale and inefficiencies are found. Based on the empirical results, several simulations are performed to measure the short-run cost savings associated with consolidation. The results reveal that while all counties would experience significant savings from consolidating, rural and less populated counties would experience the greatest per unit savings.  相似文献   

4.
5.
The recent land invasions in Zimbabwe represent a profound and contradictory revolution in that country's agrarian social order, with implications that have already spilled over the borders of this small southern African country. A settler colonial heritage that tenaciously mapped land and tenure forms into unequal zones according to race is giving way to a more complex and spatially diversi ?ed con?guration of agrarian property forms and production strategies. Control over access to the means of violence has been devolved to ruling party loyalists, war veterans, army personnel, provincial administrators and local councillors, thus shifting the forms and functions of power exercised in the name of the state and the nation. ‘Resettlement’, ‘squatting:rsquo; and ‘farm invasions’ constitute morally charged alternatives in the lexicon of movement across tenurial boundaries. Contested rights to land and to movement are mediated through discourses of national and sub‐national belonging and exclusion, with commercial farm workers – deemed foreigners – the chief victims. The dramatic challenge that the invasions pose to private property, and to the rule of law more generally, suggest the possible collapse of large‐scale capitalist farming and the withdrawal of aid and foreign investment. Yet, at the same time, new forms of capitalist investment in transnational safari hunting and eco‐tourism continue to nibble away at the land base of the most peripheral of the old African reserves, facilitated by the romantic idealism of international conservation NGOs, and the aggressive disciplinary impulses of Rural District Councils. The same shifts in patterns of elite global consumption have led conservative white ranchers to take down fences in favour of wildlife conservancies organized around a coextensive commonage. These profound, if contradictory, transformations in Zimbabwe's agrarian social order are illuminated by a new generation of ethnographically grounded scholarship, the range of which is represented in the contributions to this special issue of the Journal of Agrarian Change.  相似文献   

6.
Despite the potential of conservation agriculture (CA) for increased crop yields, energy savings, soil erosion control, and water-use efficiency, smallholder farmers in sub-Saharan Africa have been slow to adopt. Farmer-to-farmer extension (F2FE) may have a role to play in overcoming the information access problems and lack of knowledge that may preclude widespread adoption. This study uses data for 180 lead farmers linked to their 455 followers to investigate how F2FE influences awareness and adoption of CA technologies in Malawi. Results from a bivariate probit model for follower farmer awareness and adoption of the three CA principles (minimum soil disturbance, crop residue retention, and crop diversification) reveal four main findings: First, lead farmer motivation increases their effectiveness at diffusing CA practices to their followers. Second, lead farmer familiarity with and adoption of CA both matter to the spread of CA practices, but familiarity appears more important. Third, lead farmers play a more critical role in increasing awareness than adoption of the CA practices. Finally, F2FE is a complement rather than a substitute for other sources of agricultural extension in Malawi's pluralistic extension system and should support but not replace current systems. Research and policy implications are discussed.  相似文献   

7.
The principal concern of this article is the relative importance of input mix as a source of inefficiency. Emphasis in efficiency analysis studies in agricultural production has historically focused on technical inefficiency as a single concept until methodological advances enabled it to be decomposed into pure technical inefficiency and scale inefficiency. But, this advance was insufficient to identify what we consider to be the major source of inefficiency in agricultural production, namely mix inefficiency. We consider that farm enterprises may be particularly susceptible to input mix inefficiency because of restrictions on movement around the frontier isoquant; delays in the adoption of improved technologies embodied in new vintages of production processes; risk as a source of friction in input allocation decisions; and the potential for inconsistency in simultaneously attempting to reach points of allocative efficiency and mix efficiency in input use. We use non‐parametric methods to calculate a Hicks–Moorsteen productivity index using panel data for a sample of specialised pig producers in England and Wales. This index is then decomposed into measures of technology, technical efficiency, scale efficiency and mix efficiency for an input orientation. Results of the analysis show that the estimated mean mix inefficiency (0.736) was substantially larger than mean technical inefficiency (0.975) and mean scale inefficiency (0.957) over the study period.  相似文献   

8.
Humans have altered land cover for centuries, and land-cover change is a main component of global change. Land use transition trajectories, such as the forest transition theory (i.e. switch from deforestation to stable or increasing forest cover), relate long term changes in land use to gradual changes in underlying drivers, such as economic development, demographic change, and urbanization. However, because only few studies examined land change over centuries, it is not clear how land cover changes during very long time-periods which are punctuated by shifts in socio-economics and policies, such as wars. Our goal here was to examine broad land change patterns and processes, and their main driving forces in Central and Eastern Europe during distinct periods of the past 250 years. We conducted a meta-analysis of 66 publications describing 102 case study locations and quantified the main forest and agricultural changes in the Carpathian region since the 18th century. These studies captured gradual changes since the peak of the Austro-Hungarian Empire up to the accession to the European Union of most of the formerly socialist countries in the study region. Agricultural land-use increased during the Austro-Hungarian Empire in 70% of the case studies, but dropped sharply during and especially after the collapse of the Socialism (over 70% of the cases). The highest rates of abandonment occurred between 1990 and 2000. The Carpathian region experienced forest transition during the Interwar period (93% of the cases), and the forest expansion trend persisted after the collapse of Socialism (70% of the cases). In terms of the drivers, institutional and economic factors were most influential in shaping deforestation and agricultural expansion, while socio-demographics and institutional shifts were the key drivers of land abandonment. Our study highlights the drastic effects that socio-economic and institutional changes can have on land-use and land-cover change, and the value of longitudinal studies of land change to uncover these effects.  相似文献   

9.
This study provides new evidence of the impact of climate-smart agriculture (CSA) – row planting and drought-tolerant maize varieties - on farm and welfare outcomes by estimating a multinomial endogenous switching regression model that corrects for selection bias and farmer heterogeneity in CSA choice. Application of our model to panel observations of 438 households in Ghana show that adoption of CSA increases both yield and intensity of maize commercialization but negatively affect own consumption. Specifically, the magnitude of the impact is relatively higher for adopters of row planting relative to adopters of drought-tolerant maize seeds. These results suggest the need for development practitioners to increase awareness and emphasize the importance of row planting as a key component of climate-smart agriculture.  相似文献   

10.
Italian coastal areas have been subject to strong anthropogenic pressure and urbanization processes over the past 60 years. Urbanization of the protected 300-m strip from shoreline has reached levels of over fifty per cent in some parts of the country. This article, by building on previous quantitative analyses and by providing some more quantitative data on the urbanization processes of coastal land at the provincial level, seeks to understand whether a con-cause that has led to a considerable urbanisation process is to be found in the way national landscape legislation has been designed, in its relationship with urban planning, and in the institutional and administrative fragmentation that characterise the management of coastal areas in Italy. After analysing landscape legislation and assessing its relationship with urban planning functions, following an approach based on concept of nomotropism the article highlights, for Italy as a whole, that national landscape legislation while seeking to protect and safeguard coastal areas paved the way for increased urbanization and development. Drawing on regional data on illegal development, the concept of nomotropism is also used to emphasise the impact that building amnesty laws have had on the practice of illegal development so contributing to increased urbanization processes.  相似文献   

11.
The distinct urbanization process of China has attracted worldwide attention because of its impressive speed, massive scale, and policy intervention. However, the interrelationship between urban expansion and government policies is still not well understood. The Pearl River Delta Urban Agglomeration of China is the first national pioneering urbanization area since the implementation of the policy “Reform and Opening-up” in the late 1970s. Here we compared the spatial and temporal patterns of urbanization in two leading cities of the Pearl River Delta (i.e., Guangzhou and Shenzhen, the provincial capital and the first Special Economic Zone of China, respectively) from 1975 to 2015, using Landsat data integrated with urban growth and landscape metrics analysis, and examined possible footprints of major economic and urbanization policies. Our results illustrated that urban land areas in both Guangzhou and Shenzhen have experienced magnificent annual growth rates at 8.1% and 11%, respectively between 1975 and 2015. On average, Shenzhen witnessed substantially higher urban growth rate than Guangzhou during the past four decades, particularly in the initial period (1978–1990) when the Reform and Opening-up policy was launched and Shenzhen was designated as the first Special Economic Zone in China in the late 1970s. However, the speed of urban expansion in Shenzhen became considerably lower than Guangzhou from 2005 to 2015, subject to physical conditions and a series of urban land use policies. Both cities showed a generally similar dynamics of urban growth forms with leapfrogging as the predominant type of urban growth at first and then edge-expansion while the contribution of infilling in Shenzhen was higher than that in Guangzhou, especially since 2005. The urbanization processes characterized by landscape and urban growth metrics revealed that a diffusion-coalescence-diffusion-coalescence process was identified for Guangzhou, while Shenzhen was generally consistent with the diffusion-coalescence urban growth hypothesis.  相似文献   

12.
The extension of rotation lengths in forests has been proposed as an option for increasing carbon storage and contributing to climate change mitigation. This paper presents the results of a case study conducted on forests located in the southwest of France. The aim of this research was to assess the cost effectiveness of a subsidy/tax system on carbon fluxes. First, it is shown that such a mechanism leads forest owners to extend rotation lengths. However, cost effectiveness analysis shows that: (1) marginal social costs are more expensive than the private marginal costs of carbon sequestration; (2) marginal costs are higher when carbon stocks are discounted, ranging from 170.1 €/tC to 719.8 €/tC with discounted carbon stocks; and from 38.8 €/tC to 78.4 €/tC with undiscounted carbon stocks; (3) marginal costs are in the range of measures of the social value of carbon for France; (4) marginal costs increase with timber prices and increase with discount rate.  相似文献   

13.
Amid ongoing debates about institutions and development, the importance of informal institutions (or norms) is widely recognised. Relatively little, however, is known about how informal institutions form and persist over time in particular contexts. This paper combines a concern with the process of informal institutionalisation and a focus on everyday politics in urban areas. Drawing on a comparative study of Kampala (Uganda) and Kigali (Rwanda), it argues that in the former the regular mobilisation of urban social groups into protests and riots has institutionalised what might be termed “noise” as the most meaningful form of political participation. In Kigali, by contrast, comparatively “silent” processes of collective mobilisation that involve structured activities and community “self-policing” have become institutionalised. The paper analyses these differential patterns, considering the tacit norms of negotiation in each case and the incentives for urban social and political actors to adhere to them.  相似文献   

14.
Many sectors such as the fishery show classic examples of technological lock‐in and path dependence, even though some economists might predict smooth switching toward technologies that are more cost effective and sustainable. We use ideas from the evolutionary economics and public choice literatures to explain why trajectories of technological change, especially in fisheries, may not be smooth at all, but rather punctuated. The interest of technological change and switching behavior for fisheries economists and managers stems from the fact that control of effective effort, often necessary for sustainable management of the resource, remains a central management problem for that sector worldwide, even in developed countries. However, various policies put in place by governments to support the fishing sector, and often put in place to “correct” for certain market failures, may inadvertently produce other “nonmarket” failures, which result in technological lock‐ins which are unsustainable. For example, the trawling technique was widely promoted in France in the 1970s and 1980s. Path dependency developed in such a way that the preferred choice of new entrants into the fishery was this technology. Technological lock‐in occurred on the trawling technique as the trawling sector also became more politically active, making it ultimately the most widely used technique in the French fisheries sector in the Atlantic. Switching away from this technology has not taken place even with poorer economic performance of that technology. This paper also discusses the influence of state subsidies on the adoption of trawling. Even if trawling was a major innovation in fisheries in the past, its potential for technological adaptations or minor innovations is limited now. These limitations are more obvious during periods of increasing energy prices, especially in the absence of state aid. However, due to collective choice phenomena, switches to more sustainable technologies will occur more slowly. Plusieurs secteurs, tel que celui des pêcheries, offrent des exemples de verrouillage technologique et de dépendances au sentier, alors même que les économistes s’attendent à un changement régulier vers une technologie plus efficace en termes de coûts et plus soutenable. Nous nous appuyons sur la littérature évolutionniste et des choix publics afin d’expliquer pourquoi les trajectoires du changement technologique, en particulier dans les pêcheries, peuvent ne pas être régulières, mais au contraire discontinues. L’intérêt des économistes et des gestionnaires pour le changement technologique et le comportement face au retour des techniques est lié au contrôle de l’effort réel, souvent nécessaire pour une gestion durable de la ressource. Le contrôle de l’effort reste le problème essentiel de la gestion des pêches à l’échelle mondiale, y compris dans les pays développés. Toutefois, de nombreuses mesures publiques mises en place par les gouvernements pour soutenir le secteur des pêcheries, afin de «contrecarrer» certaines défaillances du marché, peuvent déboucher involontairement sur d’autres défaillances «non marchandes», se traduisant par des verrouillages technologiques non‐soutenables. Par exemple, la technique du chalutage fut largement diffusé en France dans les années soixante‐dix et quatre‐vingt. Un sentier de dépendance s’est développé tel que les nouveaux entrants dans la pêcherie optaient pour cette technologie. Un verrouillage technologique s’est produit sur la technique du chalutage rendant ce secteur politiquement important, et finalement la technique la plus répandue parmi les pêcheries françaises de l’Atlantique. Un changement de technologie n’a donc pu survenir, même en présence de faibles performances économiques. L’article traite de l’influence des subventions étatiques liées à l’adoption du chalutage. Même si cette technologie fut une innovation majeure dans les pêcheries par le passé, les adaptations techniques potentielles ou les innovations mineures sont désormais limitées. Ces limites apparaissent clairement dans les périodes de coûts énergétiques croissants, notamment en l’absence d’aides étatiques. Toutefois, en raison du phénomène de comportements collectifs, les changements vers des technologies plus soutenables se déroulent avec lenteur.  相似文献   

15.
The present study illustrates an indicator of self-contained urban growth derived from official statistics with the aim of verifying if a shift from compactness towards settlement diffusion has occurred in cities with different socioeconomic and morphological characteristics. According to this approach, changes in settlement's distribution and density were assessed in four Mediterranean cities (Lisbon, Barcelona, Rome, and Athens) during 80 years between 1919 and 2001. Results indicated that settlement distribution, building density and self-contained urban growth diverged in the four regions since the early 1980s. However, cities with a compact form showed an higher self-contained growth rate than cities with dispersed form. These findings contrast with the similarity in settlement characteristics, population trends, and spatial organization of economic activities observed during the ‘compact growth’ phase (1950–1980) in all examined regions. Comparative analyses of exurban development through morphological indicators may inform strategies promoting self-contained urban growth.  相似文献   

16.
Given the stagnant agricultural productivity and persistent food insecurity in low-income countries—notably in sub-Saharan Africa (SSA)—there has been continued interest in the adoption of new technology and its impact on productivity in these regions. To increase crop yields and sustain yield gains, recent case studies of technology adoption unanimously recommend the adoption of integrated farm management systems, particularly in SSA. On the other hand, there have been increasing numbers of studies on social network or farmer-to-farmer technology extension. These studies explore more efficient extension systems than traditional public-sector extension approaches. This article reviews both recent case studies of technology adoption and its productivity impacts as well as studies on agricultural extension to identify common findings, shortcomings, and major remaining issues.  相似文献   

17.
Sub‐Saharan Africa faces low agricultural productivity amid a confluence of trends that include rapid population growth, climate change, and the rise of the middle class. To raise productivity, governments—in partnership with donors and development organizations—have launched numerous initiatives to encourage the development of sustainable and competitive agricultural input markets. Despite these efforts, markets remain underdeveloped in most countries and access to affordable seeds and fertilizers remains a major challenge for smallholder farmers. This paper explores evidence from recent multicountry analyses of input delivery systems to assess the possibility of a Green Revolution in Africa. It describes use and adoption levels, challenges, policy and regulatory issues, and investments needed to expand smallholder access to these productivity‐enhancing agricultural technologies.  相似文献   

18.
Cities globally have incorporated sustainable development into their planning, and led the way in responding to the world’s ecological crisis by “going green”. Urban green space accessibility is considered as the key to urban sustainability progress, not only environmentally, but also economically and socially. However, previous research rarely considers the latter two dimensions together. This study therefore joins the sustainability discussion from a new perspective, in particular the debate concerning the value of urban green spaces and whether and how they contribute to the variegated sustainability agenda? Based on data for 76,595 residential housing units in New York City, measuring the economic gains and equity losses from current urban green space accessibility reveals a paradox in sustainable development where the economic and social benefits of urban green space accessibility are seldom compatible, tending to involve a trade-off of some kind. In response, it is proposed that the spatial patterns of land use can represent a step towards multifaceted aspects of sustainability, with the provision of numerous small green areas that are “affordable and accessible” throughout the city being a more appropriate policy agenda than a few vast parks. Such a policy approach, it is argued, will provide a ‘win-win’ situation in terms of simultaneously contributing to both economic prosperity and the social justice of sustainability. This research also provided evidence for the institutional-driven countries such as China on how to learn from western experiences on planning land use patterns that are sustainable for individuals.  相似文献   

19.
This article documents the existence of a leaky pipeline based on complete enumeration of faculty in two large public academic networks: state agricultural universities and institutions of the Indian Council of Social Science Research. We then examine if there are gender differences in the quantity and quality of research publications of women relative to men that can explain this. As proxies for quality and visibility, we use several metrics, including the number of citations, h-index, i10 index, and Scimago rank of the journal in which the research is featured. A novel aspect of the analysis is the comparison of time paths of cumulative publications over career paths of men and women professors. Our analysis of research performance is based on scraping publicly-available data sources, including faculty and institutional websites, and google scholar pages, and represents one-third (and likely positively selected) of all faculty in these institutions. Our results suggest that women are disadvantaged in terms of number of publications during early career years, however, the disadvantage is mitigated with seniority and women perform equally well or even surpass men later in their careers. Women are more likely to write single-authored articles and have fewer collaborators than men, indicating that they do not access collaborative spaces as much, and are less networked than men. In spite of this, there is suggestive evidence that women are more quality conscious than men. This nuanced look at research productivity suggests the source of the leaky pipeline does not arise from differences in performance.  相似文献   

20.
This article examines how clustering affects the entry and exit decisions of farm households into and from nonfarm enterprises in rural Ethiopia. We find that the existence of clusters of microenterprises in the same district increases the likelihood of a rural household to start a nonfarm enterprise. Similarly, clustering of big manufacturing firms in the same zone is found to increase the likelihood of farm households to start a nonfarm enterprise. Nonfarm enterprises operating in clusters are also found to have a lower probability of exit than those operating outside of clusters. The study further investigates the impact of entry and exit into and from nonfarm enterprises on farm household's well‐being using as indicators total household income, the food security status of a household, and the household's ability to raise enough money in case of emergency. Using propensity score matching to account for selection bias, we find that entry into nonfarm enterprises significantly increases household's income and food security status. Exit from nonfarm enterprises, on the other hand, is found to significantly reduce household's income.  相似文献   

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