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1.
Conservation auctions allow landholders to propose conservation projects and associated payments (bids) for consideration by a conservation agency. Recently, the application of iterative combinatorial auction designs has been proposed to improve outcomes of conservation auctions. In combinatorial auctions, landholders are allowed to offer projects each of which involves activities aimed at providing one or multiple services. An iterative format allows bidders the opportunity to gradually explore the type of projects they want to offer, with this process being facilitated through price feedback provided based on intermediate auction round results. Auction designs vary with the type of feedback and respond differently to market conditions. At present there is a lack of information about their performance in markets with varying degrees of competition (in terms of number of bidders and level of target). Therefore, using an agent‐based simulation model, we evaluate a number of iterative auction designs. We observe that a higher degree of competition leads to a higher auction efficiency. In a high competition environment, efficiency outcomes tend to be less sensitive to auction design choices. Therefore, an auctioneer could enjoy freedom in design choice if adequate competition could be ensured. In weak competition environments, however, some auction designs perform better than others.  相似文献   

2.
Collective action through farmer groups can be an important strategy for smallholders to remain competitive in rapidly changing markets. Previous research has analysed determinants of farmer participation in groups, equating participation with group membership. However, within groups the commitment of members can vary, as marginal benefits and costs are not the same for all individuals, and opportunities to free‐ride exist. Low participation in collective activities may reduce the ability of groups to provide useful services to its members. This article investigates determinants of member participation intensity, using the example of farmer groups in Kenya. The role of individual and group characteristics is analysed with survey data and regression models. Previous benefits that members received through the group positively influence their intensity of participation in group meetings and collective marketing, suggesting that reciprocity motives play a role. Low participation can mostly be attributed to structural and institutional conditions, such as group size and the timing of payments for collective product sales. More diversified farmers are less likely to sell collectively when group marketing activities only concentrate on one particular commodity. Since smallholders are often highly diversified, the focus of farmer groups should also be broadened. Further policy implications are discussed.  相似文献   

3.
This study uses resource‐based measures to explore the evolution of China's demand and supply for food. China's dietary shift from plant to animal‐based foods, induced by its income growth, is likely to impose considerable pressure on agricultural resources. China's demand for food on this measure appears consistent with global trends, while China is an out‐performer on the supply side, producing much more food than its income level and land endowment would predict. China's current per capita income is in a range where consumption growth is high and in excess of production growth, but the gap between supply and demand is likely to diminish as population and per capita consumption growth decelerate. Continuing agricultural productivity growth and sustainable resource management will be important influences on the growth of China's future net import demand for food.  相似文献   

4.
The 2005–8 food crisis was a shock to political elites, but in some respects the situation was normal. Food policies are failing to respond adequately to the squeeze on land, people, health and environment. Strong evidence of systems failure and stress, termed here New Fundamentals, ought to reframe twenty‐first century food politics and effort. Yet so far, international discourse is too often narrow and technical. The paper suggests that 2005–8 reinforced how the dominant twentieth century productionist policy paradigm is running out of steam. This assumed that producing more food would resolve social problems. Yet distortions in markets, access and culture remain. At national and international levels of governance, despite realization of the enormity of the challenge ahead, there is still a belief in slow incremental change.  相似文献   

5.
This paper contributes to the discussion on food sovereignty and the state by analysing the case of Ecuador. It presents a theoretical framework and literature review focused on the question of food sovereignty, the state and agrarian political economy. The case study of Ecuador, one of a handful of countries that has attempted to institutionalize food sovereignty in state policy, examines the political processes that led to the institutionalization of food sovereignty and the rural development and agricultural policies of the ‘post‐neoliberal’ government of Rafael Correa. The analysis of the Ecuadorian case concludes that the implementation of public policies reflecting food sovereignty principles has largely proven elusive, with the exception of some institutional changes and developments at the local levels of the state.  相似文献   

6.
Labels signaling sustainable product attributes are gaining importance, although uncertainty concerning the environmental, micro‐ and macroeconomic benefits of such labels persist. One of the questions still incompletely answered is whether Willingness To Pay (WTP) varies with a gradually increasing number of labels on a food product. In order to answer this question, we conducted a laboratory experiment with 191 student respondents, testing consumer valuations of different labeling strategies. Using the Becker‐DeGroot‐Marschak mechanism, WTP for 15 food products was measured. The products were endowed with up to six different sustainability labels, such that each grocery item was available in eight product versions. For perishable, nonperishable, and plant‐based products, the results indicate that participants are prone to allocating WTP‐premiums to labeled products, more than to unlabeled products. For animal products, however, labels do not influence WTP significantly. Furthermore, the premiums do not vary with an increasing number of labels, irrespective of whether the labels signal substitute or complementary sustainability information. The results are not entirely in line with normative notions of magnitude variation, but rather with the behavioral economic concept of embedding effects.  相似文献   

7.
This paper tests the Protection for Sale model in terms of the structure of protection and how realistic the estimated domestic welfare weight is relative to campaign contributions. Using data from US food manufacturing, empirical results support the key predictions for the structure of protection when either all food manufacturing industries or most of the general population is assumed to be politically organised. The domestic welfare weight is estimated as low as 0.837, the lowest econometric estimate to date, underlining that protection is for sale and that, with a qualified ‘yes’, the model fits the data for these industries.  相似文献   

8.
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   

9.
We estimate an aggregate model of child mortality on a panel of 40 African countries over the period 1995–2007. This model is then used to assess the impact of the 2008–2009 food and financial crises on child mortality, by comparing the number of child deaths computed under a “business-as-usual scenario” with those computed under the actual 2008–2009 “crisis scenario”. According to the simulation results, the 2008–2009 food price rise and recession caused a statistically non-significant additional 27,000 child deaths. However, if the 2008–2009 changes in other determinants of child mortality are factored in, the number of child deaths declined by 15,000. This unexpected result is explained by the fact that the effects of the rise in domestic food prices and the recession were offset in most of the region by the protective effect on the under-five mortality rate of a surge in food production, and by a rise in public expenditure on and foreign aid to the health sector.  相似文献   

10.
It is widely recognized that HIV/AIDS has devastating but also uneven effects on afflicted communities. While much research has rightly focused on the impact of HIV/AIDS on families, communities and countries, less attention has been paid to foster carers' experiences and to the network of care. Based on qualitative fieldwork carried out over a 3-month period in KwaZulu-Natal Province, South Africa, this study analyses the experiences of those caring for orphans who receive a state-funded Foster Care Grant. Conversations with caregivers suggest the contentious nature of care; this is worth exploring further, as it can cast light on how such macro-level interventions are shifting what it means to be an orphan at the community level. The main reason for bringing these issues to the fore is to make development interventions better informed and therefore better able to address those factors giving rise to the challenges faced by caregivers.  相似文献   

11.
This study uses U.S. farm household survey data to examine how participation in the Conservation Reserve Program (CRP) affects farm household economic well-being. Further, the study also examines the effects of CRP participation on farm household consumption, income, and imputed savings. In contrast to previous studies that assume the relationships are homogenous across the population, quantile regression is used to investigate the association between CRP participation across the entire distribution of farm household consumption and income. Empirical findings suggest that the effect of CRP participation on household economic well-being differs across the income and consumption distribution. For households in the lower percentiles of the distribution, the CRP participation is associated with an increase in household consumption, but a decrease in farm household income and savings. In contrast, farm households at the median and higher income and consumption quantiles, participation in CRP is associated with lower levels of household consumption and income, but with higher levels of savings.  相似文献   

12.
We develop a theoretical model of enforcement and compliance under HACCP regulation and use the FDA's seafood inspection records to examine: (1) if the FDA has targeted its inspections under HACCP regulation; (2) the effects of inspections on compliance with HACCP and plant sanitation standards; and (3) the relationship between compliance with HACCP and preexisting sanitation standards. There is some evidence of targeting based on product risk, but not on past compliance performance. The threat of an inspection increases the likelihood of compliance, but only for sanitation inspections, not for HACCP. HACCP compliance does not improve compliance with sanitation standards.  相似文献   

13.
Over the last two decades, extensive literature has examined the socioeconomic and environmental impacts of China's Sloping Land Conversion Program (SLCP), a program that was launched in late 1990s to mitigate the environmental effects of agricultural production and reduce rural poverty. However, little empirical evidence exists with regard to the impact of SLCP on rural households' sensitivity to nature-induced changes and environmental challenges. In this study, household-level data covering the period 1995–2010 from five Chinese provinces were used to examine the effect of SLCP on farmers' sensitivity to climate change. The empirical results show that participation in SLCP significantly reduced farmers' sensitivity to climate change by reducing their dependency on land and natural resources for income, and by diversifying their livelihood options. Spatially, the results reveal that the effect of SLCP on farmers' sensitivity vary across regions. Specifically, SLCP was found to have a ‘rate effect’ on farmers in the Northern regions and a ‘level effect’ on farmers in the Southern regions. Likewise, we found that the effect of SLCP differs considerably across income groups, with the effect on low- and middle-income groups being most significant. The results indicate that subsidy is the main pathway through which SLCP reduces farmers' sensitivity to climate change. In contrast, we found inclusive evidence about the indirect effect of SLCP farmers' sensitivity through the promotion of non-agricultural employment. These results carry major implications with regard to the effectiveness of ecological conservation programs and their mitigation potential through building farmers' resilience in China and ecologically fragile environments.  相似文献   

14.
Using first-hand data from the 2009 Employment and Informal Sector Survey (EESIC) in the two largest cities of the Republic of Congo, Brazzaville and Pointe-Noire, we analyze the impact of education on labour market outcomes, and identify the segments where education pays off the most. Multivariate analyses of the risk of unemployment and sectoral choice indicate that young people face serious difficulties in the labour market: for most of them, their only choice is to remain unemployed or to join the informal sector. To measure the specific impact of schooling on earnings, we address issues related to sample selection and endogeneity of education in the earnings function. The results shed light on heterogeneity in the returns to schooling across the two main cities and institutional sectors. An important finding is that the informal sector does not systematically lag behind the formal sectors in terms of returns to education. We emphasize convex returns to education, meaning that the last years in secondary and tertiary schooling yield the highest returns, while those of primary education are generally lower. This convexity is also apparent in the informal sector, where education (albeit on another scale) again appears as an important determinant of earnings.  相似文献   

15.
To protect farmers from health care costs and risks to livelihood, most countries have developed special health and social insurance programmes specifically for farmers. While numerous studies have examined the determinants of participation in these programmes, little is known about how they influence famers' land and labour allocations. Without government‐sponsored health and social insurance, farmers may seek off‐farm employment in order to obtain similar benefits. Conditioning eligibility for social insurance on minimum land holdings and on‐farm work days can lead to delayed retirement and other forms of job lock. We investigate these issues using a unique dataset of 703,287 farms in Taiwan. After controlling for non‐random participation in Taiwan's social insurance programme, we find that the programme increases (decreases) on (off) farm labour supply, and decreases the amount of set‐aside land. This suggests that payments from social insurance substitute for those issued through land set‐aside programmes to some extent, and that failing to account for this substitution increases the cost of achieving both programmes' objectives.  相似文献   

16.
17.
The biophysical benefits of zero tillage (ZT) are well documented in the literature. However, the literature on its economic benefits, especially in the context of small and medium‐scale farmers in the temperate developing world is scanty. Using a study of 621 wheat farmers in Syria, we provide empirical evidence on the impacts of adoption of ZT on farm income and wheat consumption. We use propensity score matching (PSM) and endogenous switching regression (ESR) approaches to account for potential selection biases. After controlling for confounding factors, we find that adoption of the ZT technology leads to a US$ 189/ha (33%) increase in net crop income and a 26 kg (34%) gain in per capita wheat consumption per year (adult equivalent) – an indication of meaningful changes in the livelihoods of the farm households. Besides the biophysical and environmental benefits documented elsewhere, our results suggest that adoption of ZT can also be justified on economic and food security grounds. Therefore, ZT can have sizeable impacts in transforming the agricultural sector in the temperate developing world provided that the technology is well promoted and adopted.  相似文献   

18.
Wind energy expansion across rural areas interacts with various interests at the local level, generating multiple reactions within communities. The Eólica del Sur wind farm implementation pathway in Mexico is a paragon of different positions vis-à-vis this industry after trying to install 132 wind turbines in other towns since 2006. This paper argues that there is a bias in studies of the politics of wind energy development in favour of oppositional voices, as opposed to groups that endorse wind energy expansion or that have stakes in the sector but neither support nor oppose wind projects per se. Based on fieldwork conducted over three years and semi-structured interviews with Eólica del Sur stakeholders, the paper argues that different responses to wind energy are linked to contrasting ownership claims over land in the region and competing notions of the institutions that should legitimize these claims.  相似文献   

19.
This paper makes use of a Computable General Equilibrium model to analyze the impact of two agricultural productivity trends on poor households’ food security in Burkina Faso: a negative trend that could arise from many different factors, including land degradation, climate change, and harmful agricultural practices; and a positive trend which may result from enhanced public investment in agriculture, notably in research and development, extension, irrigation, rural roads, rural electrification, and rural education. The results point to a high sensitivity of the poor's consumption to agricultural productivity as well as to stronger impacts on the urban poor than on the rural poor. The current situation is already characterized by severe food insecurity, such that a decline in agricultural productivity is likely to further plunge the urban poor into a deep food crisis. By contrast, positive agricultural productivity trends may help alleviate poverty and food insecurity. Agricultural productivity may indeed affect the poor's food consumption mainly through large changes in agricultural prices and real incomes. Cet article utilise un modèle d’Équilibre Général Calculable pour analyser l'impact des différentes tendances de la productivité agricole sur la sécurité alimentaire des ménages pauvres au Burkina Faso. D'une part, les tendances négatives peuvent résulter de plusieurs facteurs, y compris la dégradation des terres, le changement climatique, et les pratiques agricoles nuisibles. D'autre part, la tendance positive peut résulter de l'investissement public accru dans l'agriculture, notamment dans la recherche et développement, la vulgarisation, l'irrigation, les routes rurales, l′électrification rurale et l′éducation rurale. Les résultats montrent une sensibilité élevée de la consommation des pauvres à la productivité agricole, ainsi que des impacts plus forts sur les populations urbaines pauvres. La situation actuelle est déjà caractérisée par une insécurité alimentaire grave de sorte qu'une baisse de la productivité agricole est susceptible de plonger davantage les pauvres en milieu urbain dans une crise alimentaire profonde. En revanche, la tendance positive sur la productivité agricole peut contribuer à atténuer la pauvreté et l'insécurité alimentaire. La productivité agricole peut en effet affecter la consommation alimentaire des pauvres principalement par le biais de grandes variations des prix agricoles et des revenus réels.  相似文献   

20.
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