941 resultados para Agroecology. Sustainable agricultural practices. Family farm. Intercrop.Sustainable rural development


Relevância:

100.00% 100.00%

Publicador:

Resumo:

This research investigates the contribution that Geographic Information Systems (GIS) can make to the land suitability process used to determine the effects of a climate change scenario. The research is intended to redress the severe under representation of Developing countries within the literature examining the impacts of climatic change upon crop productivity. The methodology adopts some of the Intergovernmental Panel on Climate Change (IPCC) estimates for regional climate variations, based upon General Circulation Model predictions (GCMs) and applies them to a baseline climate for Bangladesh. Utilising the United Nations Food & Agricultural Organisation's Agro-ecological Zones land suitability methodology and crop yield model, the effects of the scenario upon agricultural productivity on 14 crops are determined. A Geographic Information System (IDRISI) is adopted in order to facilitate the methodology, in conjunction with a specially designed spreadsheet, used to determine the yield and suitability rating for each crop. A simple optimisation routine using the GIS is incorporated to provide an indication of the 'maximum theoretical' yield available to the country, should the most calorifically significant crops be cultivated on each land unit both before and after the climate change scenario. This routine will provide an estimate of the theoretical population supporting capacity of the country, both now and in the future, to assist with planning strategies and research. The research evaluates the utility of this alternative GIS based methodology for the land evaluation process and determines the relative changes in crop yields that may result from changes in temperature, photosynthesis and flooding hazard frequency. In summary, the combination of a GIS and a spreadsheet was successful, the yield prediction model indicates that the application of the climate change scenario will have a deleterious effect upon the yields of the study crops. Any yield reductions will have severe implications for agricultural practices. The optimisation routine suggests that the 'theoretical maximum' population supporting capacity is well in excess of current and future population figures. If this agricultural potential could be realised however, it may provide some amelioration from the effects of climate change.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Around 80% of the 63 million people in the UK live in urban areas where demand for affordable housing is highest. Supply of new dwellings is a long way short of demand and with an average annual replacement rate of 0.5% more than 80% of the existing residential housing stock will still be in use by 2050. A high proportion of owner-occupiers, a weak private rental sector and lack of sustainable financing models render England’s housing market one of the least responsive in the developed world. As an exploratory research the purpose of this paper is to examine the provision of social housing in the United Kingdom with a particular focus on England, and to set out implications for housing associations delivering sustainable community development. The paper is based on an analysis of historical data series (Census data), current macro-economic data and population projections to 2033. The paper identifies a chronic undersupply of affordable housing in England which is likely to be exacerbated by demographic development, changes in household composition and reduced availability of finance to develop new homes. Based on the housing market trends analysed in this paper opportunities are identified for policy makers to remove barriers to the delivery of new affordable homes and for social housing providers to evolve their business models by taking a wider role in sustainable community development.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

The question of how to organize and manage sustainable regional development has recently come to the fore in many places across the industrialized countries of Central and Western Europe, and especially within the European Union (EU).This book looks at the home-grown natural, economic and social, socio-political, political and administrative conditions which policy makers face, while also being subjected to numerous external influences. Political actors in less important EU regions The question of how to organize and manage sustainable regional development has recently come to the fore in many places across the industrialized countries of Central and Western Europe, and especially within the European Union (EU).This book looks at the home-grown natural, economic and social, socio-political, political and administrative conditions which policy makers face, while also being subjected to numerous external influences. Political actors in less important EU regions attempt to create and implement strategies of regional development in the context of regional policy-making by EU institutions, national governments and the globalization process

Relevância:

100.00% 100.00%

Publicador:

Resumo:

The links between operational practices and performance are well studied in the literature, both theoretically and empirically. However, mostly internal factors are inspected more closely as the basis of operational performance, even if the impact of external, environmental factors is often emphasized. Our research fills a part of this existing gap in the literature. We examine how two environmental factors, market dynamism and competition impact the use of some operational practices (such as quality improvement, product development, automation, etc.) and the resulting operations and business performance. The method of path analysis is used. Data were acquired through an international survey (IMSS – International Manufacturing Strategy Survey), which was executed in 2005, in 23 participating countries in so called "innovative" industries (ISIC 28-35) with a sample of 711 firms. Results show that both market dynamism and competition have large impact on business performance, but the indirect effects, through operations practices are rather weak compared to direct ones. The most influential practices are from the area of process and control, and quality management.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

With the increased antibiotic exposure from anthropogenic sources, soil microbes are an ever-increasing ecological pool of resistant bacteria. This is the case with bacterial resistance to vancomycin through transfer of van-resistance genes by transposons. Studies show that bacterial species other than enteroccoci harbor genetic-like elements such as the Tn1546 transposon containing vancomycin-resistant genes. Overuse and misuse of antibiotics in hospital settings and agricultural practices have led to an increase in transferability of vancomycin-resistant genes among microbes. The objective of this project is to analyze the diversity of these genes found in the soil microbes from Miami-Dade County. Bacterial isolates were Gram-stained and the Kirby-Bauer antibiotic disk diffusion test was performed to determine the degree of resistance. Results showed that all bacterial isolates were resistant to penicillin at the 10 µg concentration and most were susceptible to varying vancomycin concentrations (10 µg, 20 µg, and 30 µg). A 1465 bp fragment was amplified from the 16S rDNA gene using 27F and 1492R universal primers from the multi-antibiotic resistant bacteria and sequenced to identify the isolates. Three Gram-negative bacteria genera were identified with the closest phylogenetic match to: Pseudomonas sp., Stenotrophomonas sp., Xanthomonas sp., as well as two Gram-positive bacteria genera: Bacillus sp. and Brevibacillus sp. The isolates’ vanA and vanB genes were amplified using the respective primers. Ongoing work is underway to sequence and compare these known van resistant genes, with the goal of revealing intrinsic vancomycin resistance present in soil bacteria.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

This project will create a blueprint for an eco-settlement in the South Florida area that will house a total of ten people on a five acre plot of land. Using a combination of permaculture design principles and simple tech solutions, this settlement will be capable of supporting its inhabitants “off the grid”, or with no reliance on outside public utilities. More specifically, the settlement will be capable of supporting its inhabitants by producing a minimum of 80% of its resources on site using only all natural farming techniques, proper water management, companion planting and various other techniques. Instead of using modern agricultural practices that damage the land in the long term, all of the principles that will be used in this design will allow the land to heal over time while still producing most of what is needed for any inhabitants. This project is significant because all of the principles used are time-tested and capable of adapting to any type of environment. The principles used do not have a steep learning curve. In fact, anyone ranging from a kindergartener to a 90-year-old will be able to learn and teach the required skill sets in as little as one week. By contrast, in order to fully utilize GMO crops, first a scientist must spend a minimum of eight years getting degrees in various fields of study to even reach a textbook understanding of the exact science. In addition, several years must be spent in sterile lab environments to see the results of complex experiments that may not even be used, thus wasting time, money, and resources. I am certain that this will be successful because similar goals have already been reached by people around the world without access to modern utilities. The only major difference is that my approach will be documented scientifically, and show that not only is this way of life healthy, but also easy and practical. Because of this, my project will bring permaculture design into the spotlight, and will hopefully see widespread adoption. This will result in cities designed with the intent to live with nature instead of conquering it, and will hopefully aid the earth in healing for future generations.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

This Doctoral Dissertation deals with the evaluation of impacts, through the Case Study on deviations or redirects present in contracts Pronaf B, at Governador Mangabeira - BA , from 2011 to 2013. From the questioning about the expected impacts not contribute to the effectiveness of the program ? It was possible the measurement of the hypothesis that the effectiveness of unexpected impacts stems from the logic of family farming, unique socio-economic conditions of individuals and family units. The methodology is structured in the theoretical framework regarding the impact assessment and family farming, data collection, questionnaires among redirected contracting credit in PRONAF B and interviews with institutional actors involved . The results confirmed the existence of a logic family farm, able to take own decisions their mode of reproduction of life. As for the impact assessment, we added the importance of the unexpected in the evaluation of public policy impacts , while study of effectiveness with the beneficiaries and the significant contribution of their views.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Nowadays the rapid growth of urban centers, the accumulation of social and environmental demands, the relationship between public policy and increasingly complex problems accentuates the feeling that cities undergo an urban crisis. This crisis is especially characterized by its multidimensionality, which goes through economic, cultural, ethical, environmental and, above all, political issues. In order to study the core of this crisis that is manifested by the urbanization process and has in its exacerbation on the metropolitan areas was conducted conceptual and theoretical study of the meaning of sustainable development applied to the everyday reality of cities, extracting from this debate concepts, such as: sustainable territorial development, administrative sustainability and political sustainability. Looking forward to test this the practical applicability of these theoretical concepts studied, an empirical study was done on the reality of metropolitan solid waste in Natal, Rio Grande do Norte, Brasil. According to the recent theoretical debate, the waste comprises a sector of the urban environmental crisis that best represents the relationship between man and environment. Ensuring the multidimensionality of environmental issues through the “Saber Ambietal” (LEFF, 2005), was made a extensive qualitative study correlating the concepts of sustainable territorial development, metropolitan governance and “Saber Ambiental” applied on solid waste. The results point to the real challenges of municipal government in understanding the real situation, take action and change the inertia in which have operated in recent decades. The results also showed the importance of transforming environmental issues in political, in other words, struggle for ideas, ideological and ethical references.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Nowadays the rapid growth of urban centers, the accumulation of social and environmental demands, the relationship between public policy and increasingly complex problems accentuates the feeling that cities undergo an urban crisis. This crisis is especially characterized by its multidimensionality, which goes through economic, cultural, ethical, environmental and, above all, political issues. In order to study the core of this crisis that is manifested by the urbanization process and has in its exacerbation on the metropolitan areas was conducted conceptual and theoretical study of the meaning of sustainable development applied to the everyday reality of cities, extracting from this debate concepts, such as: sustainable territorial development, administrative sustainability and political sustainability. Looking forward to test this the practical applicability of these theoretical concepts studied, an empirical study was done on the reality of metropolitan solid waste in Natal, Rio Grande do Norte, Brasil. According to the recent theoretical debate, the waste comprises a sector of the urban environmental crisis that best represents the relationship between man and environment. Ensuring the multidimensionality of environmental issues through the “Saber Ambietal” (LEFF, 2005), was made a extensive qualitative study correlating the concepts of sustainable territorial development, metropolitan governance and “Saber Ambiental” applied on solid waste. The results point to the real challenges of municipal government in understanding the real situation, take action and change the inertia in which have operated in recent decades. The results also showed the importance of transforming environmental issues in political, in other words, struggle for ideas, ideological and ethical references.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Maintaining and enhancing living conditions in cities through a combination of physical planning and environmental management is a newly emerging focus of governments around the world. For example, local governments seek to insulate sensitive land uses such as residential areas from environmentally intrusive activities such as major transport facilities and manufacturing. Regional governments protect water quality and natural habitat by enforcing pollution controls and regulating the location of growth. Some national governments fund acquisition of strategically important sites, facilitate the renewal of brown fields, and even develop integrated environmental quality plans. This book provides recently developed and tested methods for assessing the strengths and weaknesses of planning and policy options. Several contributions focus on new substantive areas of concern in planning evaluation, including environmental justice and sustainable urban development. Applications of evaluation in several planning contexts are demonstrated, and special problems that these pose are assessed. Several chapters address how to communicate the process and results to several stakeholder groups, and how to engage these groups in the evaluation process. Each chapter employs a realworld case in practice, thus dealing with the complexity of applying planning evaluation, and providing practical advice useful in similar situations.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Harmonious territorial development and urban-rural linkages have attracted increased policy attention in recent years in the attempt to overcome the predominant discourse of the urban-rural divide. Territorial development refers to a ‘process through which the geographies of territories inhabited by human societies is progressively transformed. It involves physical components (infrastructure, landscapes and townscapes, etc.) but also the territorial structure of settlements pattern, i.e. the geographic distribution of population and human activities’ (Council of Europe, 2007). Urban-rural linkages refer to ‘complementary and synergetic functions and flows of people, natural resources, capital, goods, employment, ecosystem services, information and technology between rural, peri-urban and urban areas’ (UN-HABITAT, 2015). ‘Urban-rural partnership is the mechanism of cooperation that manages linkages to reach common goals and enhance urban-rural linkages’ (OECD, 2013). Therefore, territorial or urban-rural partnerships are increasingly regarded as a desirable policy action, respectful of the particular identities of different territorial components (UCLG, 2016).