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1.
China's economic reforms, which began in 1978, resulted in remarkable income growth, and urban Chinese consumers have responded by dramatically increasing their consumption of meat, other livestock products and fruits and by decreasing consumption of grain-based foods. Economic prosperity, a growing openness to international markets, and domestic policy reforms have changed the food marketing environment for Chinese consumers and may have contributed to shifts in consumer food demand. The objective of this paper is to uncover evidence of structural change in food consumption among urban residents in China. Both parametric and nonparametric methods are used to test for structural change in aggregate household data from 1981 to 2004. The tests provided a reasonably clear picture of changing food consumption over the study period. En Chine, les réformes économiques amorcées en 1978 ont entraîné une croissance remarquable du revenu à laquelle les consommateurs urbains chinois ont réagi en augmentant considérablement leur consommation de viande, d'autres produits d'élevage et de fruits et en diminuant leur consommation de produits alimentaires à base de céréales. La prospéritééconomique, une ouverture croissante sur les marchés internationaux et les réformes de la politique intérieure ont modifié l'environnement commercial des produits alimentaires des consommateurs chinois et peuvent avoir contribuéà modifier la demande des consommateurs pour des produits alimentaires. Le présent article visait à recueillir des preuves de changement structurel dans la consommation alimentaire des citadins chinois. Nous avons utilisé des méthodes paramétriques et non paramétriques pour tester les changements structurels à partir de données agrégées sur les foyers de 1981 à 2004. Les tests ont brossé un tableau assez clair de l'évolution de la consommation alimentaire au cours de la période à l'étude. 相似文献
2.
With the increase in climate change and increasing social concerns about environmental deterioration, sustainability has become a hot topic in both natural and social research. Nowadays, sustainable cities are one of the focal points, while rural areas have been disregarded. In fact, rural areas have been suffering from environmental degradation for decades. Thus, sustainability transitions in both urban and rural areas should be given commensurate emphasis. In this paper, we provide an overview of rural evolution worldwide and attempt to explore alternative approaches for enhancing rural sustainability. As depicted in the literature, rural evolution is multifaceted. For a long time, depopulation and demographic aging have been like chronic diseases torturing rural areas. Although there were some bright spots of rural repopulation and economic restructuring, they were not mainstream of rural development. Based on the existing research, we established a conceptual framework and analyzed the rural evolution paradigm from a geographic perspective. We found that rural composition determined rural architecture, while rural architecture affected rural functioning. Changes in rural functioning formed the rural evolution trend. Since rural development was also influenced by external factors, both self-organization and governmental intervention were found to be alternative approaches to guiding rural transitions. We took the case study of Tengtou village to exemplify the sustainable pathways of a rural transition. The case study indicated that national policies were the fundamental impetus for rural transformation, while self-organization played a more important role. We hope that our study will shed new light on policy orientations and rural transitions. 相似文献
3.
River floodplains are significant environmental resources in that they provide multiple ecosystem services. However, river floodplains are/tend to be overdeveloped because indirect-use values linked with ecosystem services are overlooked by private landowners. In a case study of the Ouse catchment, it turns out that river floodplains tend to be overdeveloped in upstream areas because of a unidirectional spatial externality. We set a simple model that considers both direct- and indirect-use values to analyse the social optimisation. The essential point is that we must consider two types of environmental externalities related to the ecosystem services of river floodplains to make decisions on floodplain development. First, the development of river floodplains has opportunity costs in terms of lost ecosystem services. Second, the development of floodplains increases flood risks to people downstream (imposes a unidirectional spatial external costs). Theoretically, we can easily deal with the problem by zonal economic policies: zonal taxes or subsidies (price policies) and zonal marketable permits or transferable development rights (quantity policies). On the practical side, however, there are so many problems. Then, such approaches are too complex to use. First of all, we have to specify real complicated economic and physical systems which show non-linearity, irreversibility, site-specific relationships, and inter-dependency between systems and sites. Secondly such policies should be ‘zonal’, which might impose substantial transaction costs. In order to apply them to real situations, we have to determine the appropriate number of zones, their sizes and geographical shapes, and then set appropriate rates or amounts of permits in each zone. Furthermore, the determination of zones is difficult because of the trade-off between the internalisation of externalities and implementation costs of policies, which are also related to political frictions and market failure. 相似文献
4.
In Chinese agricultural villages, housing provides multiple functions for rural households. With the transition of state policies and regional socio-economic development in China over the last 40 years, farmers have modified the layout and form of rural housing to adapt to the shifts in their livelihoods and lifestyles. Rural housing built by the remittances of migrant workers has produced negative externalities in densely populated agricultural regions, whilst in some villages, traditional housing has been demolished as part of settlement rationalization plans, with peasants relocated to apartment-style housing. These practices have been controversial and generated conflicts between peasants and local governments. Thus, rural housing has become a theoretical and practical problem in rural China that cannot be resolved with a “one-size-fits-all plan or policy”. Based on field surveys and interviews in three case villages, this paper examines how the form and layout of North China quadrangles (NCQs, or Huabei siheyuan), the four-sided folk housing built by people of the Han nationality in northern China, have been modified since the 1970s. We discuss the land use problems arising from the evolution of NCQs and options for solutions. We found that NCQs in agricultural villages have undergone several dramatic modifications: NCQs built during the collectivist agriculture era (1970s) were traditional in style but had reduced functions; NCQs built during the agriculture intensification era (1980s to mid-1990s) played an important role in agriculture production; and NCQs built in the cyclical migration era (mid-1990s to date) are typically modern and spacious. These modifications to the form of NCQs can be seen as adaptation and survival strategies of rural households in response to socio-economic transitions, their changing livelihoods, and changes in their needs over the course of their lives. Today, rural houses with varied qualities, abandoned houses, and empty plots of land coexist and intermingle together in rural settlements. To manage this chaotic situation, we suggest macro-level solutions with targeted measures to respect variations in farmers’ characteristics and interests and avoid impairing the diversity and adaptability of rural folk housing. 相似文献
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This study examines if open space ownership, and ownership of the land on which water resources are located, has a different effect on the sale price of nearby single-family residential properties using an OLS and spatial lag modeling approach. Estimated coefficients for the percentage of land with publicly and/or privately owned water resources in the spatial lag model are mixed with significantly negative coefficients for privately owned land with wetlands or streams and a significantly positive coefficient for publicly owned land with wetlands. These results may reflect differences in accessibility, the current quality of these resources, and beliefs about future management. The spatial lag model has fewer significant coefficients than the OLS model, but the signs of key parameters are consistent across models. The average absolute difference between coefficients in the OLS and spatial lag models is 30.2%. 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.
The Brazilian Amazon harbours 70 % of the world’s tropical forests and is essential to the country’s economy because it maintains biodiversity, sustains the livelihoods of the indigenous people and local communities, and provides ecosystem services such as water production, soil stabilization, flood prevention, and climate regulation. In the last three decades, the Brazilian government has established a regional protected area (PA) network that currently covers approximately 48 % of the region. Despite their importance, some sectors of the Brazilian society have argued that the expansion of the PAs across the region hampers the local economic development, because they make less area available for non-forest economic activities such as large-scale agriculture, mining, and power generation. In this study, we analysed the relationship between local economic growth and PA coverage in 516 municipalities in the Brazilian Amazon from 2004 to 2014. We modelled the impact of the coverage of the three types of PAs (strictly-protected, multiple-use, and indigenous lands) on the (i) compound annual growth rate (CAGR) of the real gross domestic product per capita (GDP per capita), and (ii) real gross value added per capita (GVA per capita) of the agriculture, industry, services, and government sectors in each municipality. The models also considered the following control variables at the municipal level: area, age, per capita GPD in 2004 (or per capita GVAs in 2004), population growth rate between 2004 and 2014, education index, deforested area outside PA per capita, deforested area inside PA per capita, degraded area outside PA per capita, degraded area inside PA per capita, and presence of illegal mining within PA. We applied spatial Durbin error models (SDEM) to analyse the direct, indirect, and total impacts of the PAs on the local economic growth. We did not find a statistically significant relationship between the local economic growth and PA coverage in any of the three PA groups evaluated. Only the total impact of the GVA per capita of the industry was negatively correlated with the coverage of the strictly-protected PAs. Our findings do not support the arguments used by some interest groups of the Brazilian society that the social and environmental gains generated through the expansion of PAs across the region constrain the overall local economic growth. 相似文献
8.
Cities have always been dependent on ecological services from their local and regional hinterlands. In recent decades, however, urban population growth and rising material standards of living, in conjunction with technological development and globalization, have compelled cities to become reliant on global hinterlands. It follows that urban sustainability measures should target not only city and regional lands, but also the sustainability of global hinterlands. In this paper we disaggregate the urban hinterland into domestic and global hinterlands, using the city of Beer-Sheva, Israel as an example. We use a slightly revised ecological footprint analysis to separate the domestic and global hinterlands associated with various urban activities such as food, materials and water consumption, electricity use and transportation. We found that 94% of the Beer-Sheva footprint is ascribed to the global hinterland and only 6% to the domestic hinterland. We also found that the city's footprint is more than double that of a sustainable carrying capacity at the global scale and nine times more at the domestic level. After analyzing each component of the city's footprint, we identify some potential administrative measures at various scales – from local to global, which can help to minimize the size of the urban hinterland, reduce urban pressure on that hinterland, and thus promote urban sustainability. 相似文献
9.
Adaptive governance has assumed growing importance in natural resource management literatures, emphasising learning and adaptation among actors at different political administrative levels and geographic scales as a precondition for the emergence of sustainable development. Here we assess this claim by examining five case studies of ‘good practice’ in sustainability, drawn from a national survey conducted in English National Parks. Specifically, we evaluate whether (1) adaptive governance characteristics are present in these ‘good practice’ initiatives, and (2) what governance role, if any, National Park Authorities have played in mediating individual and collective activities and behaviours within these projects at different levels and scales. We conclude with a critical assessment of the capacity of the adaptive governance approach to furnish new understandings of sustainable development initiatives in English NPs. 相似文献
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In recent decades, human activities have moved beyond the range of natural variability and are approaching critical tipping points that may lead to irreversible changes to the Earth's systems. In particular, the diversity of actors and scales, and their power and interest in Earth system resources, increases natural – social interconnectivity and the vulnerability of these traditionally local resource systems to disturbances. Using a combination of design conditions and robustness analyses, we argue that institutional maturity and local knowledge of self-organised regimes are pre-conditions for the continuity of local forest socio-ecological systems as long-lasting institutions that survive global market disturbances. Vulnerability and robustness against external natural and social disturbances thus largely depend on institutional robustness, as well as socio-ecological dynamics. 相似文献
12.
Social protection has emerged as a key driver of development policy at the beginning of the twenty‐first century. It is widely considered a ‘good thing’ that has the potential not only to alleviate poverty and vulnerability, but also to generate more transformative outcomes in terms of empowerment and social justice. Based on an ethnographic study of the implementation of the Mahatma Gandhi National Rural Employment Guarantee Act (MGNREGA), India's flagship social protection policy, this paper takes a critical look at what this policy's ‘success’ consists of. The study was carried out in Tamil Nadu, a state widely presented as a ‘success’ in terms of MGNREGA's implementation, and describes who participates in the scheme and how success is understood and expressed at different social and bureaucratic levels. In terms of MGNREGA's outcomes, we conclude that the scheme is benefitting the poorest households – and Dalits and women in particular – especially in terms of providing a safety net and as a tool for poverty alleviation. But the scheme does more than that. It has also produced significant transformative outcomes for rural labourers, such as pushing up rural wage levels, enhancing low‐caste workers' bargaining power in the labour market and reducing their dependency on high‐caste employers. These benefits are not only substantial but also transformative in that they affect rural relations of production and contribute to the empowerment of the rural labouring poor. However, in terms of creating durable assets and promoting grassroots democracy, the scheme's outcomes are much less encouraging. 相似文献
13.
Urban green infrastructure (UGI) planning, based on certain principles, has emerged as a way to conceptualise connected greenspace in urbanised environments. This is achieved through the application of processes and approaches linked to policy themes to which the concept can significantly contribute. Taken together the processes, approaches and policy themes constitute the principles of UGI, which when adopted can promote, maintain and enhance quality of life in resource-efficient, compact and climate-resilient cities. In this study we explore the extent to which strategic greenspace planning in Europe is UGI compliant, as we hypothesised that the above principles are presently under-represented in planning documents and policies. This was accomplished by conducting a comparative analysis of the adoption of UGI principles in current practices of greenspace planning across European city-regions based on a systematic review of previous data and reports. The study found that many UGI principles and related concepts are present to some degree in strategic greenspace planning in Europe. However, gaps exist with regard to their scope and level of consideration. Presently, conservation emerges as the predominant task in strategic urban greenspace planning. However, enhancing network connectivity is key to the development of UGI, hence a greater focus on the restoration and creation of greenspace is required in the future. Based on our analysis it can be concluded that the advancement towards UGI planning is well established and progressing, although some areas are markedly under-represented. Strategic greenspace planning in Europe, with a few exceptions, requires further development to be effectively considered as UGI compliant. 相似文献
14.
As concern grows regarding urban sprawl and forest and agricultural land preservation, the effectiveness of land-use policies in shaping land-use change warrants further study. We evaluate the impact of county-level zoning laws, the most predominant land use policy in the USA, and land rents on the relative amounts of forest, agricultural, and developed land, while controlling for demographic information and taxation rates. Over the past decades, southern Indiana has experienced forest regrowth on private lands, but this regrowth has declined in recent years with increased conversion of open space for urban residential development. We develop a model of land-use shares in 40 southern Indiana counties based on the net benefits to agriculture, forestland, and urban uses using a maximum likelihood estimation of a Dirichlet distribution. We find agricultural land rent and indicators of land productivity are the most important predictors of the proportion of agriculture and urban uses. Forest use is better explained by shifting regional economic structure and hilly terrain. Counties with a greater proportion of their work force in the service sectors have a greater proportion of land forested. Finally, to some extent zoning may protect agricultural land in the region, although land rents, land characteristics, and population are strong predictors of the ratio of agriculture to urban use. 相似文献
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Since early 2016, the expiration of a part of the land-use rights in China has elicited widespread public concern because of the ambiguous interpretation of relevant legal clauses. Land-finance-based urbanization is the primary fiscal source of Chinese local governments, but it has been considered unsustainable by many scholars. Numerous studies have been conducted on these two issues, but a comprehensive study that combines both issues is needed. This study attempts to analyze the relations between the two concepts from the perspective of demographic change in the following decades. It proposes a compensatory mechanism based on land-use term and property tax to deal with the renewal of land-use term and the unsustainability caused by land finance. Results provide an alternative approach for the local government to realize sustainable urbanization in the future. 相似文献
17.
The purpose of this article is to analyze the relation between public health and the regulations of Maximum Residue Limit (MRL) of pesticides. Many authors underline the role of trade protectionism in fixing these limits, whereas these regulations should be intended for public health protection. We first establish the link between the MRL for a given chemical in plant products and its level of toxicity. In order to perform this analysis, we cross the FAS USDA MRL database and the classification of the long‐term toxicological effects (LTE) for active substances provided by SAgE pesticide. We then compute a synthetic and polyvalent tool, namely, “Health Score,” which provides a first overview of the link between LTE and MRL by country. Then this score is regressed in a logit model in order to identify the relationship between the countries’ Health Score and the socioeconomic and political characteristics of such areas. Results highlight the importance of public health expenditures in determining the settings of MRL toward stricter levels. 相似文献
18.
The implementation of the Birds and Habitats Directives in the UK has caused considerable unease within some parts of industry. Ports in particular have voiced concerns and have argued that the UK Government's interpretation of the Directives is more comprehensive than strictly necessary, likening it to ‘gold plating’. They have argued that this has placed the UK at a disadvantage to other European competitors. This paper explores these contentions and examines case histories to establish the veracity of the arguments. 相似文献
19.
This paper is based on a systematic review of evidence of the impact of microfinance on the lives of poor women, men and children in sub‐Saharan Africa. It focuses specifically on longer‐term non‐financial outcomes related to health and nutrition and education. The paper contrasts microfinance's early days' initially refreshing and encouraging promises of a development initiative that empowers people to help themselves while ‘paying for itself’ with a more gloomy picture that derives from the synthesis results of our systematic review. It presents two simple models that show the pathways from microfinance to increased investment in improved health and education, contrasting theory with our synthesis results. Our discussion highlights that thinking through microfinance makes it necessary to thoroughly investigate both the theory behind interventions and the evidence for their impact. It raises the essential question: Is microfinance about providing banking services to the unbanked, or is microfinance a development intervention that concerns itself with the attainment of long‐term sustainable responses to high levels of poverty? 相似文献
20.
Agri-environment schemes were introduced in the mid-1980s. Their primary objectives have developed from initially aiming to hold back intensification towards stimulating environmental enhancement. The introduction of Entry Level Stewardship (ELS) in England represents a third stage in seeking to extend the coverage of schemes across the majority of agricultural land. This aims to influence land use along the whole of the intensive margin. The ELS offers a wide range of options for which farmers are awarded points. Selection of options equivalent to 30 points per ha in lowland areas entitles farmers to a payment of £30 per ha. By September 2007, 4.4 million ha had been entered into the scheme, equivalent to 47% of the agricultural area. From amongst the options on offer, 34% of points were for boundary options, 20% for intensive grass options, 16% for management plans and 13% for options taking arable land out of production. The choice of options varies across the country with a higher proportion of the agricultural area entered in the East. Entry into the scheme is associated with total agricultural area, cereals farming, larger farms, a lower proportion of area in Environmentally Sensitive Area and Countryside Stewardship schemes and grazing livestock numbers. While the ELS has introduced a large number of new entrants into agri-environment schemes, the extent of the environmental impact is uncertain. Given the large number of options available, it is likely that farmers will have chosen options that involve relatively little change and incur limited cost. At the same time, it would be surprising if the environmental gains were of the types most valued within local areas. The ELS approach implies that public goods provided from agricultural land should be paid for irrespective of what would have happened in the absence of the scheme. While this may be a fairer approach, it may also undermine the idea of land stewardship and imply that payments will continue to be required in the long term in order to sustain provision. The ELS does establish a framework within which incentives could be targeted to deliver specific benefits within particular contexts and suggestions are made as to how policy might be developed for this. 相似文献