首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   81篇
  免费   7篇
安全科学   2篇
环保管理   22篇
综合类   18篇
基础理论   16篇
社会与环境   19篇
灾害及防治   11篇
  2023年   3篇
  2022年   3篇
  2021年   2篇
  2020年   10篇
  2019年   7篇
  2018年   7篇
  2017年   8篇
  2016年   7篇
  2015年   3篇
  2014年   2篇
  2013年   15篇
  2012年   4篇
  2011年   3篇
  2009年   4篇
  2008年   4篇
  2007年   2篇
  2006年   1篇
  2004年   1篇
  2000年   1篇
  1998年   1篇
排序方式: 共有88条查询结果,搜索用时 31 毫秒
11.
A growing number of people are entering the artisanal and small‐scale mining (ASM) sector worldwide. In Madagascar, millions of individuals depend on this informal activity. Through a case study in the Alaotra‐Mangoro region of Madagascar, our research aimed to understand the “bottom‐up” dynamics and ripple effects of the sector, by looking at the realities for rural communities where inhabitants are both directly and indirectly affected by ASM. We were interested in community members' and miners' perceptions of the socio‐economic and environmental impacts of ASM, and in identifying the factors attracting people living in one of the country's agricultural hubs to this activity. Our results show a wide diversity of push and pull factors leading people to enter the sector. Although many positive impacts of ASM exist for miners and communities within the vicinity of mines, most miner participants considered themselves worse off since starting to mine, highlighting the high risk and low probability of return of ASM. ASM's potential for local and national development will remain squandered if its negative impacts continue to go unmanaged. Accounting for local contexts and the ripple effects of ASM will be crucial in achieving safety and security for miners, and to tap into the benefits it may offer communities while minimising environmental damage.  相似文献   
12.
李海燕  蔡银莺 《自然资源学报》2014,29(10):1696-1708
农田生态补偿政策是采用经济手段激励农户对农田生态系统服务功能进行保育和维护,解决因市场失灵造成生态效益外溢的一种有效方式,对于改善农田生态环境、提升农地开敞空间、增加农户收益具有积极作用。论文从发达地区农户生计多样性角度入手,利用结构方程模型分析农户生计多样性对农户参与补偿政策的支持意愿、政策实施效果响应的影响。结果表明:①农户基本特征、家庭特征、生计多样性特征、村庄发展特征在5%的水平下对农户在农田生态补偿政策上的支持意愿具有正向影响;②农户基本特征、家庭特征、生计多样性特征在5%的水平下对农户在补偿政策实施效果上的响应具有正向影响,农户村庄发展特征在5%的水平下对其具有负向影响;③农户生计多样性特征是影响农户补偿政策支持意愿最主要的因素,是影响补偿政策实施效果响应的次要因素。这表明补偿政策实施后,农户生计多样性特征对于提高农户对补偿政策支持意愿与政策实施效果响应方面具有积极的作用。把握三者之间的关系有利于政府制定和完善现有农田生态补偿政策,为引导农户生计多样性发展提供参考。  相似文献   
13.
This paper presents the status of sustainable livelihood security index (SLSI) of Karnataka, the most drought prone state in the Southern part of India. Computation of ecological security index, economic efficiency index and social equity index, and finally SLSI were carried out at the district level for the entire state, using empirical data. The selected indicators were first normalised, and then using estimated weights, indices were computed. The results indicate that the state has a very low SLSI with only 27.6% of total geographical area (TGA) and 21.7% of population being placed in the ‘sustainable’ and ‘highly sustainable’ categories (covering 10 districts) while only 34% of the TGA covering six districts falls in the ‘moderately sustainable’ category. The remaining area, confined mostly to the northern parts of the state, comprising 14 districts (51.8% of the state’s TGA) is categorised as ‘less sustainable’ and ‘very less sustainable’ exposing 44.4% (27.14 million) of state’s population to the perils of uncertain rainfall, high soil erosion rates, high social inequality and poor resource use efficiency. There is an urgent need to reorient development programmes and prioritise development investments in these vulnerable districts so that they are provided resources and opportunities to improve their ecological (more forest cover and less soil erosion), economic (higher agricultural productivity) and social (improved health and education facilities and rural infrastructure) status and achieve sustainable levels of livelihood.  相似文献   
14.
重点生态功能区对维护国家和区域生态安全至关重要,农户作为该区最主要的经济活动主体和最基本的生态环境保护单元,其对生计压力的适应性直接关系到重点生态功能区主体功能的发挥。本文以地处青藏高原东缘的甘南黄河水源补给区为例,基于入户调查数据,分析了农户的生计压力、适应能力及适应策略,并利用多元logistic回归模型探明了影响适应策略选择的关键因素。结果表明:①甘南黄河水源补给区有近90%的农户遭受多重生计压力的冲击,其中,“自然+社会+经济”型压力是该区农户面临最多的生计压力组合。②经济示范区农户的适应能力最高,恢复治理区次之,重点保护区最低;遭受“自然+社会”型压力冲击的农户适应能力最高,遭受“自然+社会+经济+政策”型压力冲击的农户适应能力最低。③甘南黄河水源补给区有87.45%的农户采取多种适应策略来应对生计压力,其中,选择“扩张+援助+收缩”型适应策略的农户占比最大。④自然资本、人力资本、社会资本、自然压力的严重程度和生计压力的多样化程度是影响适应策略的关键因素。鉴于此,政府应加大生态环境保护力度,拓宽农户增收渠道,建立多元化信贷机制,加强偏远地区基础设施建设,完善社会保障体系,提高农户在面临生计压力时的适应能力,促进生计可持续发展。  相似文献   
15.
Cooperatives are increasingly advocated as a means to improve incomes, livelihoods and the sustainability of smallholder farmers. This study analyzes the impact of commercial vegetable cooperative membership on smallholder agricultural performance in Cambodia. Institutional heterogeneities are considered across cooperatives and various econometric techniques are used to control for potential selection bias. The impacts of horticulture on agricultural outcomes are also analyzed. The results indicate that membership of commercial vegetable cooperatives has so far had no effect on agricultural incomes or the value or amounts of agricultural inputs. However, results indicate that membership has affected technology choice, access to credit services and information transmission through technological training. Additionally, there is evidence that horticulture, as a component of overall agricultural diversification, can augment farm income. The results suggest that much of the benefit of cooperative membership stems from the cooperative's provision of services, which might not be easily inferred from measures of member incomes.  相似文献   
16.
脑力疲劳与非疲劳状态眼动指标的判别   总被引:1,自引:0,他引:1  
为研究利用眼动指标(注视点个数FC、平均注视时间AFD、平均眼跳幅度ASA、最大瞳孔面积Pupil Max及反应时RD)对脑力疲劳状态进行判定,通过眼动追踪技术,测试了不同脑力疲劳程度的眼动指标值并进行分析。结果表明:1)通过FC、AFD、ASA和Pupil Max四个眼动指标可以判定被试者所处的疲劳状态; 2)当测试者注视点个数FC处于(11,13)区间,平均注视时间AFD处于(328,409)区间,平均眼跳幅度ASA处于(5,7)区间,最大瞳孔面积Pupil Max处于(992,1 124)区间时为非疲劳状态;当FC处于(7,10)区间,AFD处于(263,319)区间,ASA处于(2,4)区间,最大瞳孔面积Pupil Max处于(584,935)时可以认定被试者为疲劳状态。  相似文献   
17.
This paper situates livelihood adaptations in two coastal villages within the broader context of Belize's colonial and post-colonial history and environmental processes of change. Through observations, qualitative interviews, and archival reviews, we explore the dynamics of livelihood change and analyse the diverse factors that have been influencing options and adaptation over time. The results reveal that both villages have undergone profound changes in livelihoods and productive activities on several occasions. While the villages' histories, geographies, and cultures are different, similarities in long-term trends include the transition from land-based to marine resources and the decline of small-scale agriculture. Our analysis illuminates the deep connections between local livelihoods and national as well as global political–economic processes, which favour extraction and export of natural resources throughout the period investigated, whereby resource access and market mechanisms create and constrict adaptation options for the villagers. Gradual environmental changes, such as erosion, and episodic events, such as hurricanes, have also influenced livelihood shifts and adaptations in combination with a wide range of political–economic factors. Despite the demonstrated importance of the influence of history and dimensions of political economy on contemporary adaptation options in the communities studied, the literature on climate change adaptation inadequately accounts for these factors. This paper adds new perspectives to current debates in climate change research by emphasising that longer temporal dimensions of livelihood change are important for understanding the current context for adaptation.  相似文献   
18.
This case study examines the coastal hazard adaptation strategies of a fishing community in a village in Kerala, India. It shows that formal adaptation strategies are highly techno‐centric, costly, and do not take into account the vulnerabilities of the fishing community. Instead, they have contributed to ecological, livelihood, and knowledge uncertainties. The adaptation strategies of the fishing community are a response to these uncertainties. However, they may not lead to the fishing community's recovery from its vulnerability contexts. This case study is primarily qualitative in nature. Data were collected through in‐depth interviews. Insights reveal that when actors with diverse values, interests, knowledge, and power evolve or design their respective adaptation strategies, the resulting interface often aggravates existing uncertainties associated with hazards. Furthermore, the study demonstrates that local discourses on coastal hazards are livelihood‐centric and socially constructed within the struggle of the fishing community to access resources and to acquire the right to development.  相似文献   
19.
Robinson L  Jarvie JK 《Disasters》2008,32(4):631-645
Tourism is highly vulnerable to external, non-controllable events. A natural disaster can affect the local tourism industry in numerous ways, and such events are particularly devastating for small communities whose local economy is heavily dependent on the sector. Loss of infrastructure plus negative media stories can have long-term ramifications for the destination. In spite of the economic importance of tourism, post-disaster recovery efforts in this sector are often overlooked by non-governmental organisations (NGOs), which focus on more traditional livelihoods such as agriculture or fishing. This paper describes Mercy Corps' support of tourism recovery activities in Arugam Bay, a remote village on the east coast of Sri Lanka, following the 2004 tsunami. The local economic base is built largely on two sectors: community tourism and fishing. As many other actors were supporting recovery in the local fishing industry, Mercy Corps concentrated on revitalising the tourism sector.  相似文献   
20.
以武汉市城郊江夏区和蔡甸区的516户农民家庭为实证,运用logistic和分位数回归模型探索家庭生计资本对农户土地流转行为的影响及阈值。结果表明:(1)人力资本和金融资本与农户农地转出行为呈显著正向相关,家庭农地资源禀赋、机耕能力、社会资源禀赋及经营能力的信任程度等与农地转出行为负向相关。相反,自然资源禀赋及农业机械投入对农户土地转入行为的正向影响显著,而家庭融资能力则对农户转入行为呈显著的负向影响。(2)分位数回归结果显示,对农户土地流转行为存在影响阈值的仅有韧性指数。当农户家庭韧性指数≤2时,随韧性指数增强农户农地转出倾向愈强;家庭韧性指数≥3时,农户农地转出倾向随指数增强而弱化。该研究从农户微观个体视角探索生计资本异质对农地流转行为的影响,为针对农户家庭需求制定差别化的农地流转政策、有效推进农业适度规模经营提供建议参考。  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