首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 0 毫秒
1.
The study of traditional agrarian systems can provide useful knowledge for improving the sustainability of present-day agriculture. Nonetheless, with the loss of traditional agro-ecosystems and the rationale that guides them, as has happened in Europe, an historical research approach can have a decisive role to play in recapturing this knowledge. In this article we study the evolution of a typical Mediterranean agro-ecosystem during the last 250 years, supporting the claim that high diversity and the internalization of energy flows and nutrient cycles found in traditional agriculture, are not only characteristics of the greatest sustainability of such systems, but are based in the need for additional land in production. This claim requires the dedication of land to diverse and complementary uses that leave a footprint on the landscape. Organic agriculture needs to consider this “land cost”, meanwhile trying to minimize it in order to improve its actual degree of sustainability.  相似文献   

2.
The European Union (EU) most likely will continue to adapt its Common Agricultural Policy (CAP) to a more liberal market policy. We assume that this process will take place in the next 20 years. A relevant question then is which European regions, under such conditions, have prospects to maintain a sustainable agriculture in terms of the objectives within the ‘People, Profit and Planet’ framework of sustainability. We explored the question by defining simple indicators for the 3 P-objectives, quantifying the indicators per region, ranking the regions per indicator and defining the prospect of a region in comparison to other regions. The approach is very robust, easy to update and indicative for quickly assessing future prospects of regions. The results are presented in three maps showing more than 160 regions of the EU-25 member countries classified according to their agricultural prospects for competitiveness (Profit), employment (People) and land use (Planet). By considering the three maps in combination, the overall prospects for sustainable agriculture under “liberalised” conditions can be assessed. Based on this quick scan, it is concluded that: (a) the few highly developed and highly productive regions in the UK, the Netherlands, France and Germany will out-compete the numerous still poorly developed and low-productive regions in the Southern and Eastern EU member states; (b) these regions in the UK, the Netherlands, France and Germany will maintain their already minimized and highly productive employment at the expense of the member states with a relatively high agrarian employment, notably Poland and the Baltic states; (c) the sparsely populated regions of France, Denmark, Scotland, Ireland, Czech Republic and Germany will maintain their agrarian land use, at the expense of densely populated regions with relatively small holdings in Poland, Italy, Germany, Portugal and Spain. Policy makers and entrepreneurs can obtain an integrative view by taking into account the three prospect maps to support decision-making on long-term policies and sustainable investments in terms of the 3 Ps.  相似文献   

3.
Multifunctional agriculture is increasingly discussed as an alternative to conventional, mono-functional farming and its negative environmental impacts. This study aims at determining Thai society’s demand for agri-environmental services offered by a multifunctional agricultural system using two models, i.e. a Choice Experiment Model and a Latent Class Choice Model. The Choice Experiment Model (CEM) is employed to assess citizens’ willingness to pay for various attributes of multifunctional outputs. Extending from the CEM, the heterogeneity of citizens’ preferences across environmental attitudes and knowledge is captured through the Latent Class Choice Model (LCCM). Survey data was obtained from structured interviews with 373 respondents in the country’s two largest cities, namely Bangkok and Chiang Mai. The results of the CEM suggest that urban Thai citizens are willing to pay for changes toward multifunctional agriculture, as expressed in an increase of their monthly food expenses. Among the attributes of agri-environmental practices, “organic agriculture in combination with agro-biodiversity conservation” garnered the highest preference, followed by “organic farming as single practice” and “Good Agricultural Practice combined with agro-biodiversity conservation”. Income, gender, agri-environmental knowledge and environment-conscious attitude are important factors determining urban citizens’ support of multifunctionality. Findings of the LCCM revealed a strong heterogeneity in attribute valuation across three different classes of respondents, suggesting that policy-makers need to be aware of diverse preference patterns among Thai citizens with regard to specific attributes of multifunctional agriculture. We further conclude that enhancing environmental literacy and consciousness is a key determinant in gaining citizens’ support for multifunctional agriculture.  相似文献   

4.
Commonly used pesticides and handling practices which might expose farmers and their environment to chemical hazards were investigated in the Irepodun/Ifelodun local government area of Ekiti State, Nigeria. Direct field observations and answers to a structured questionnaire from a random sample of 150 farming households showed that commonly used pesticides comprised herbicides (48.3 per cent), fungicides (28.2 per cent) and insecticides (23.5 per cent). Of these, 86.7 per cent are classified as ‘highly’ hazardous by the World Health Organization (WHO) and have been banned or restricted in many developed countries. Nearly all of the farmers (94.7 per cent) had received no formal training in safe pesticide use and mixed different products. Farmers suffered from discomforts ranging from eye irritation (91.3 per cent), skin problems (87.3 per cent), nausea (86.0 per cent), headache (83.3 per cent) and vomiting (58.0 per cent). More than half of the pesticide applicators (61.3 per cent) sprayed pesticides near water bodies. Only a few farmers reported decreasing trends in numbers of beneficial insects (27.3 per cent) and other animals (29.3 per cent). The results showed that the awareness of farmers and authorities needs to be raised regarding the use of protective equipment and correct procedures when handling pesticides and, also, that there should be stricter enforcement of existing pesticide regulation and monitoring policies to minimize the threats that the farmers' current practices pose to their health and to the environment.  相似文献   

5.
This paper provides an account of the origins and formation of the UK Research Councils’ Rural Economy and Land Use (RELU) programme and its approach to promoting interdisciplinary working between social and natural scientists. The programme is set in the context of broader developments in science policy, including a policy discourse centred upon sustainable development and the knowledge economy and associated demands for greater accountability in science. Interdisciplinarity promises research that will be more relevant and responsive to public needs and concerns. In describing the provenance of the RELU programme, therefore, the paper seeks to lay out the different stages in its initiation and design to show how, to varying degrees, these were open to external scrutiny and influence. The process of developing the programme illustrates that it is not straightforward to make research agendas and funding more transparent and accountable. It also provides insights into the challenges that interdisciplinarity and accountability present to established science institutions.  相似文献   

6.
7.
Subsistence farmers in Lesotho have been able to boost agricultural yields and increase food production by adopting conservation agriculture. The practice, locally known as likoti, also contributes to combating soil erosion and to enhancing fertility. The socio-economic and environmental benefits help poor households to rehabilitate and strengthen their livelihood capital base and ultimately help rural communities to build system resilience in the face of widespread poverty and increasing vulnerability that affect the country. This paper discusses the major advantages associated with the spread of likoti. By drawing on primary data collected by FAO-Lesotho, it enquires into the determinants of adoption, thereby highlighting constraints and options for future up-scaling. The results show that attending appropriate training is a crucial prerequisite for the correct adoption of likoti. However, training is more effective when trainers pursue true participation and when social capital among farmers is stronger. Further important determinants of adoption are the level of education and the economic incentives provided to vulnerable households. Stronger policy and institutional support in all these areas would thus help address the cultural and resource constraints that limit the full potential of likoti to be harnessed and ultimately hinder its further spread throughout the country.  相似文献   

8.
Organic farming has experienced considerable growth in recent years. Proponents of organic farming point to the environmental and nutritional benefits of organic systems, although these are contested by some. More recently, it has been argued that organic farming can provide rural development benefits through enhanced employment and through closer connections with the local economy, reconnecting consumers with producers and stimulating positive economic multipliers. Against the background of claims made for the rural development potential of organic farming, this paper considers the generation and retention of income, purchasing patterns, and direct employment impacts of a large sample of organic and non-organic farmers in England. The paper reveals some important distinctions between the characteristics of organic and non-organic farms and farmers. It is argued that most of these differences do not stem directly from differences in farming systems but, rather, reflect considerable differences in the people who operate organic farms as well as the distinctive business configurations they frequently adopt.  相似文献   

9.
Even though worldwide research and teaching in Agroecology blossomed in the 1980s, until recently, the development of Agroecology in China has been constrained by technical, cultural and economic considerations. The delay in the assimilation of Agroecology, as a science, a practice and a movement, has resulted in the discipline of Agroecology in China lacking the holistic, interdisciplinary approaches needed to respond to current global and regional agricultural challenges. There is a need to redefine Agroecology both as a critical discipline and as a pedagogical approach. By using an ecology-oriented systematic approach to integrate education and research, a reframed Agroecology is proposed; this is based on a re-imagined, holistic consideration of the hierarchy of agroecosystems. The practical experience of a 15-year international team-taught Agroecology education programme among participants from Canada and China has helped refine disciplinary classifications, both from horizontal and vertical hierarchies. There are evolving impacts of this experiment in Sino-Canadian cooperation in Agroecological research and education; they include a new generation of highly trained agroecologists prepared to act across inter-related disciplines; the alignment of Chinese universities to international agricultural curricula and a better- informed policy-making process towards greening agriculture in China.  相似文献   

10.
Urban planners are increasingly interested in agriculture around cities and have to decide whether to maintain or not areas of agricultural land use within and close to growing cities. There is therefore a need for researchers to design tools to guide public decision-making on land use. Various approaches, originating from different disciplines, may be adopted in this respect. We designed an interdisciplinary research program in order to test two related concepts: the “sustainability” and the “multi-functionality” of agriculture. We show that these concepts provide a useful framework for obtaining appropriate knowledge about urban agriculture, which urban planners could apply in real situations. In close collaboration with urban planners, we applied an interdisciplinary research methodology, based on common farm surveys and territorial approaches, to the Antananarivo area (Madagascar). The main functions analyzed were the food production and environmental roles of urban agriculture. Two aspects of sustainability were assessed: the farm sustainability and the territorial sustainability, with expert scores. This approach identified a wide diversity of farming systems that performed differently, depending on their intra- or suburban location. The food supply function appeared to be important not only for fresh produce but also for rice consumption. The function of protection against flooding is now important and this importance will increase with climate change. A diagnosis of sustainability was made and discussed with urban planners: several farming systems and zones were identified in which agriculture was considered important as a means of maintaining or developing the food supply, employment and incomes, and even landscape or environmental quality. We also identified other areas in which poor production conditions and/or the negative effects of urbanization on agriculture jeopardized its sustainability. This methodology appeared to be useful for determining the most appropriate role of urban agriculture in the land-use planning of this city. Our study raises new questions on the subject and should lead to more focused research programmes. We discuss several points of interest and the limitations and possible extension of this method.  相似文献   

11.
增长方式转变是当前现代农业建设的重要任务,转变渔业增长方式必须加强渔业经济与政策研究。本文从准确把握现代农业建设的时代背景,明确当前渔业经济政策研究的重点领域,深刻认识政策和科技支撑渔业发展的重大作用等三个方面,阐述了加强渔业经济与政策研究的着眼点,以便为推动我国渔业增长方式转变提供具体的途径。  相似文献   

12.
The Land Use Scanner (LUS) is a decision support system for land use planning that is widely used in the Netherlands. The model yields solutions that have a high resolution (500×500 m) and reflect economic equilibrium in the land market, in which eighteen types of land use and nine aggregated habitat types competitively bid for locations. Here, an extension to the LUS is presented that enables the internalisation of environmental externalities. The focus in this study is on two important externalities, namely ammonia emissions from agriculture and habitat fragmentation. We simulate four IPCC-based land use scenarios and assess the level of fragmentation of the nine habitat types. We also perform sensitivity analyses in the most market-oriented scenario on the effectiveness of market-based instruments in promoting more efficient land allocation. The simulation results suggest that particularly the habitat type ‘rain-fed mires and bogs’ is susceptible to fragmentation. The sensitivity analyses show that internalising the damage costs of fragmentation resulted in smaller changes in land allocation than internalising those of nitrogen deposition. For both instruments, the policy effort was large in relation to the efficiency gains in land allocation.  相似文献   

13.
The inverse relationship between farm size and productivity has almost become a ‘stylised fact’ in the economic development literature. Most of the studies contributing to this preception have been Hawed by methodological shortcomings and the request is that these studies be treated with caution. Using recent farm survey data from the wine producing areas of the Western Cape of South Africa, this study attempts to overcome some of the methodological problems, distinguishing between partial and total productivity measures. Using data envelopment analysis, most of the wine grape producers were found to operate under constant returns to scale. Co-operative membership seemed to overcome the economies of scale associated with processing and marketing. The inverse relationship between farm size and both land productivity and total factor productivity is weak, not consistently negative and differs between regions. Thus, caution must be used when advocating rural development policies based on the inevitability of an inverse relationship existing in all sectors and production regions of agriculture.  相似文献   

14.
Indiscriminate disposal of poultry manure has been identified as a major source of environmental degradation in production areas through air and water pollution associated with nitrogen and phosphorus emissions and losses from manure. Methods of disposing of poultry manure which might have negative consequences on the environment and the farmers were investigated in two Local Government Areas of Oyo State, Nigeria. Data collected using structured questionnaires as well as direct field observations from a random sample of 100 farming households showed that the commonly used methods of manure disposal are burning (87 households) and application on crops (9 households). Almost all of the farmers (99) had no proper manure management facilities. Ammonia is the major air pollutant perceived by 71 farmers in the study area. Farmers suffered from discomforts ranging from various combinations of sneezing (65%), eye irritation (38%), coughing (34%), headache (20%), stomach ache (13%) and diarrhoea (6%). The awareness of farmers and authorities needs to be raised regarding the management of poultry manure and the need for protective equipment during its disposal: 99 farmers had no formal training in safe handling and disposal of poultry manure. There should be stricter enforcement of existing environmental regulations and enactment of new legislation to minimize the threats that the farmers’ current practices pose to their health and to the environment.  相似文献   

15.
16.
Research on the dynamics of tropical forest land use and cover change (LUCC) has focused on the three scenarios: (1) deforestation/degradation; (2) settled, degraded areas in recovery, and (3) sparsely settled, expansive, intact forest. Through examination of a central Quintana Roo, Mexico case study we propose a fourth scenario of a ‘sustainable landscape’: an inhabited, productively used, forested landscape that nonetheless shows little change or net gains in forest cover over the last 25 years. We use Landsat images to demonstrate a low incidence of net deforestation, 0.01% for the 1984–2000 period, the lowest recorded deforestation rate for southeastern Mexico. Institutional innovations such as an agrarian reform process that established large common property forests for non-timber forest product extraction, and later innovations such as sustainable forest management institutions have driven the outcome of low net deforestation, added to multiple organizational processes that promote sustainable land use.  相似文献   

17.
18.
在渔业产品质量安全的生产者行为理论分析基础上,采用抽样调查的实证方法,利用上海市渔业企业的问卷调查数据,对渔业企业的质量安全认知水平、控制意愿和控制行为进行了实证研究。结果表明渔业企业的质量安全认知水平不高,质量安全控制意愿不强烈,安全控制行为较少,对此提出了具有针对性和可操作性的政策建议。  相似文献   

19.
海洋文化产业是文化产业中特殊的组成部分,是当代文化产业的一个前沿研究领域。本文运用理论研究和实地调查相结合的方法,列举舟山群岛鲁家峙、岱山东沙镇、普陀山、朱家尖、沈家门、长峙岛、蚂蚁岛、太阳谷、朱家尖白山、桃花岛等实际案例,从文化产业集群三大核心定律出发,即产业链组合与延伸的规律、区位优势与选择的规律、产业集聚与联动的规律,充分揭示了舟山群岛海洋文化产业集群的内在规律及发展思路,提出舟山应结合各个岛屿的资源禀赋特征,因岛制宜构建不同种类的海洋文化产业集聚区的建议,对于舟山群岛海洋文化产业集群发展具有一定的指导意义。  相似文献   

20.
The rate and extent of adoption of conservation practices by farmers is influenced, in principle, by characteristics of the practices and those of the farmers. Governments use policy instruments to increase the rate of adoption of practices which generate public benefits if it is deemed that privately optimal adoption rates will not lead to publicly optimal conservation outcomes. Recent nation-wide conservation programs in Australia have attracted criticism for low levels of effectiveness and efficiency. Could it be that program design has ignored key adoption factors, in particular characteristics of the target audience? If adoption is subject to personal factors, such as the motivations for farming, then it is likely that so are farmers’ responses to policy approaches and instruments. In this case study, surveys were conducted of farmers in three regions within the tropical savannas of northern Australia, where land-use systems are characterized by large-scale broad-acre beef grazing enterprises. Inter alia, these surveys collected data on graziers’ motivations, impediments to adoption of conservation practices, and perceived effectiveness of policy instruments in overcoming impediments. The research found that graziers had a very high level of conservation and lifestyle motivation and were motivated to lesser extents by financial/economic and social considerations, pointing to a strong stewardship ethic of graziers, or altruistic motif. Motivational profiles were significantly correlated with farmers’ perceptions about what constrained them from implementing conservation based management systems. Motivational profiles also explained differences in farmers’ perceptions of and stated propensity to interact with policy instruments, particularly at a regional scale and in the context of historical government interventions. On the basis of the empirical evidence presented, governments would be well advised to harness the diverse set of aspirations and motivations of farmers when designing conservation programs rather than. In particular, conservation programs need to take advantage of farmers’ stewardship ethic for maximum effectiveness and efficiency, and minimize the risk of crowding out intrinsic motivation and altruistic behaviours.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号