宁夏月牙湖移民区生态环境变化监测

利用宁夏月牙湖生态移民区2010年与2012年2期卫星影像数据,通过人工目视解译,并且与实地土地利用调查资料相结合,对该生态移民区生态环境变化进行监测。结果表明,2010—2012年,由于生态移民过程中对移民区的土地利用结构进行了规划调整,移民区天然草地、沙地面积明显减少,而耕地、林地面积明显增加,生态移民对改善当地土地利用方式起到了积极的作用。根据生态环境状况变化幅度分级标准,研究区2010—2012年生态环境状况明显好转。     

江西省移民扶贫移民贫困风险因果树分析

利用因果树分析方法对江西省移民扶贫移民贫困风险发生的四大因子(搬迁风险、生产风险、生活风险和社会边缘化风险)及其深层因子进行了层次分析,并就移民发展能力和机会、生产资金资助、移民参与制定发展规划等方面提出了相应的规避措施。     

高致病性禽流感SI传播模型研究

[目的]分析影响高致病性禽流感传播的主要因素。[方法]将家禽养殖场分为未感染和已感染2类,流动禽鸟分为易感者和具有传染性者2类,在此基础上,建立SI传播模型。[结果]n0（初始流动禽鸟感染数）、λ（鸟-家禽养殖场的传染率）和μ（鸟-鸟传染率）3个因子对禽流感的传播速度起着重要作用。[结论]控制流动禽鸟的发病数量、减少病鸟与家禽的直接的或间接接触和给家禽注射疫苗是控制高致病性禽流感疫情的有效措施。     

三峡库区移民后续安稳致富问题研究——以重庆库区开县县内搬迁移民生产安置效果评价为例

结合重庆库区开县县内搬迁移民生产安置的入户调查数据,分析了目前三峡库区移民生产安置的可持续性。研究发现,库区淹没线上土地安置容量严重不足、工商业发展滞后及40多岁和50多岁外地务工的农民回流库区,对现有生产安置方式的可持续性形成了挑战。为此,要长久保持库区移民安稳致富,国家在三峡库区后续发展中应重点实施具体的产业移民政策和公共事业促进就业政策。     

What motivations drive foreign gardeners to cultivate? Findings from urban gardening initiatives in Lombard municipalities

This paper examines the motivations that drive foreign gardeners to cultivate a garden in Lombard municipalities.Motivations underlying urban gardening are inspired by social, health, environmental and food-related benefits. Several studies document these benefits with reference to the entire population of gardeners, while ignoring the specific perspective of each social subgroup, mainly because of a lack of data. This scarce knowledge is particularly evident for the subset of foreign gardeners, i.e., migrants moving to Italy for work and/or family reasons who decide to cultivate an urban garden in the municipality of their residence. In turn, this prevents municipalities from adopting urban gardening projects that are consistent with the specific requirements of this group.As the regional government has legally recognized the importance of urban gardens and financed their realization, the Lombard municipalities have promoted many of these practices in their territories over recent years. However, neither the region nor the municipalities have created a database of these practices or collected information on the motivations that lead people in general – and foreign citizens in particular – to cultivate locally.This paper aims to fill that gap by presenting some results gained from the elaboration of two questionnaires sent to both the municipalities and the gardeners themselves.Findings indicate that about 21 % of the responding municipalities promote urban gardening initiatives. Of these municipalities, less than one in five have at least one foreign gardener. Foreign gardeners come mainly from North Africa and Eastern Europe, most of them are over 40 years old, and have usually lived with their families in Lombard municipalities for more than five years. Their motivations consist of a growing interest in participation in local communities, breaching multiple relationships and enforcing participation. Conversely, they attribute little importance to sharing values and strengthening personal and social identities, or to preserving the social ecological memory of ancient practices. Finally, they frequently highlight the contribution of garden cultivation in reducing pollution and in reconnection with food practices, making access to good food a priority.