排序方式: 共有14条查询结果,搜索用时 343 毫秒
1.
以生态服务价值理论为指导,从土地利用变化动态度、生态系统服务总价值和生态价值敏感度3个方面评价陇县土地利用总体规划(2006~2020年)对区域生态环境的影响。结果表明,林地、耕地在规划期内生态系统服务价值都呈增长趋势,区域生态系统服务总价值增加了30700万元。 相似文献
2.
Kristen A. Conner Author Vitae Author Vitae Jonathan I. Groner Author Vitae Author Vitae 《Journal of Safety Research》2008,39(5):469-475
Problem
Motorized recreational vehicle (MRV)-related injuries can result in severe medical and financial consequences. The objective of this study was to describe the epidemiology, and clinical and financial impact of MRV-related injuries in Ohio.Method
Probabilistically linked statewide Emergency Medical Services (EMS) and hospital (inpatient and emergency department) data for 2003 and 2004 were examined. Record pairs with a MRV-related E-code (E821-E823, E825) were included in this study.Results
There were 2,893 patients with MRV-related injuries, who had linked EMS and hospital records, resulting in more than $15 million in hospital charges and 1,921 inpatient days of hospitalization. The male-to-female ratio was nearly 4:1, and 19% were younger than 16. Almost 82% of cases were not wearing a helmet; there was a trend of decreasing helmet use with increasing age. Mean (SE) inpatient hospital charges and length of stay (LOS) were $22,218 ($1,290) and 3.8 (0.2) days, respectively. The mean (SE) Injury Severity Score (ISS) for inpatients was 9.2 (0.4). Individuals injured on a street/highway were 3.20 times more likely to sustain an ISS ≥ 16 (95% CI: 1.03, 9.88; p = 0.044) and 3.05 times more likely to sustain a traumatic brain injury (TBI) (95% CI: 1.17, 7.94; p = 0.024) than those who were injured at a place designated for sport or recreation. Children aged 12 to 15 and young adults aged 16 to 25 were 2.47 and 2.14 times more likely, respectively, to sustain a TBI than adults aged 36 or older (aged 12 to 15: 95% CI: 1.13, 5.38; p = 0.024; aged 16 to 25: 95% CI: 1.26, 3.64; p = 0.005). Higher ISS was associated with both higher total charges (p < 0.001) and longer LOS (p < 0.001).Discussion
This study demonstrates that MRV-related injuries are an important public health problem in Ohio, with a substantial clinical and financial impact.Impact on Industry
Enactment and enforcement of statewide MRV safety legislation and training of MRV users offer valuable opportunities to prevent these costly injuries. 相似文献3.
Carresi AL 《Disasters》2008,32(1):41-65
The terrorist train bombings in Madrid, Spain, on 11 March 2004 triggered a swift and massive medical response. This paper analyses the pre-hospital response to the attacks to gain insight into current trends in disaster management among Madrid's Emergency Medical Services (EMSs). To this end, the existing emergency planning framework is described, the basic structures of the different EMSs are presented, and the attacks are briefly depicted before consideration is given to pre-hospital management. Finally, an explanation of the main underlying misconceptions in emergency planning and management in Madrid is provided to aid understanding of the origins of some of the problems detected during the response. These are attributable mainly to inappropriate planning rather than to mistakes in field-level decision-making. By contrast, many of the successes are attributable to individual initiatives by frontline medics who compensated for the lack of clear command by senior managers by making adaptive and flexible decisions. 相似文献
4.
三峡蓄水成库后仍属于典型的河道型水库,其总体水流、水质运动特性符合一维水流水质运动规律。针对三峡库区总体水流、水质运动特性,采用一维水流水质模型对三峡库区水流和水质进行了模拟。以该模型为核心,利用Web Services技术开发并在互联网上发布了模型服务,在此基础上采用成熟的WebGIS和富客户端Flex等技术构建了适用于三峡库区的干流水质模拟平台;能够实现包括各计算断面流速、流量、水位以及污染物浓度时空过程在内的三峡库区干流流速场和浓度场的数值模拟。以库区干流清溪场至十里铺断面内的江段作为模拟实例,利用该平台模拟计算江段内水流和水质状况,并以水文水质同步观测数据对模拟结果进行验证,结果表明其具有较好的模拟效果;为三峡库区污染物总体输移扩散特性研究提供了有利工具,同时也为国家和地方政府进行库区水环境决策提供了技术支持 相似文献
5.
M. Bartolomeo D. dal Maso P. de Jong P. Eder P. Groenewegen P. Hopkinson P. James L. Nijhuis M.
rninge G. Scholl A. Slob O. Zaring 《Journal of Cleaner Production》2003,11(8):829
The potential environmental benefits of moving from a product-based economy to a functional economy involving greater use of services is a subject of increasing interest and debate in the field of eco-efficiency. This paper provides a typology and fuller analysis of eco-efficient producer services than hitherto reported. Three broad classes of service are described and assessed: product based including product results, product utility and product extension; electronic substitution and information based. Examples of each are drawn from a major study on the successes and barriers of eco-services in Europe. The paper concludes that while there are a number of areas of success, there are considerable barriers to wider development and uptake of such services, and that many of the more successful service applications are not necessarily driven by environmental considerations. The paper warns that the shift from products to services cannot be assumed to be eco-efficient and there are a number of rebound effects which need to be carefully analysed. 相似文献
6.
大伙房水库上游地区生态系统服务功能价值评估 总被引:1,自引:0,他引:1
运用市场价值法、机会成本法、影子价格法、费用分析法、影子工程法、旅行费用法和替代花费法对大伙房水库上游地区生态系统服务功能价值进行评估,计算得到研究区生态系统服务功能总价值为127亿元/a,其中物质生产价值22.502亿元/a,大气调节价值38.93亿元/a,水分调节价值19.923亿元/a,环境净化价值24.373亿元/a,土壤保护价值8.624亿元/a,生物多样性维持价值12.647亿元/a。结果显示,研究区生态系统具有健全的生态服务功能,有效地达到了调节大气、涵养水源、防洪蓄洪、保持土壤等生态效益,有着极其重要的生态保护价值。 相似文献
7.
The free distribution of seeds and tools is the standard approach to agricultural recovery. The predominance of this approach is partly attributable to the: (1) perception that farmer seed quality is poor, (2) insistence on seed certification, (3) promotion of researcher varieties, (4) misdiagnosis of unavailability, (5) difficulty accessing farmer seed, and (6) support for the commercial seed sector. This paper presents a Seed Security Assessment Framework to distinguish among the causes of seed insecurity and focuses on three principal concepts: seed availability; access to seed; and factors associated with seed utilisation. Using this diagnostic framework, Catholic Relief Services (CRS) has developed a better approach to promoting seed system-based agricultural recovery. It involves a combination of seed voucher distribution and the organization of seed fairs, which bring together a range of sellers from whom the holders of vouchers may purchase seed. This approach is advantageous because it: strengthens farmer seed procurement systems; is cost efficient; in economic terms, has a multiplier effect in the community; is straightforward to plan and implement; allows commercial sector participation; provides an opportunity to promote improved varieties for farmer evaluation; brings together different communities. 相似文献
8.
Different ranking methods: potentialities and pitfalls for the case of European opinion poll 总被引:1,自引:0,他引:1
Paola Annoni 《Environmental and Ecological Statistics》2007,14(4):453-471
Prioritization and ranking of objects are primary needs in various substantive fields. It might be said that ranking and comparison
are the first step in every risk assessment procedure, whatever the ‘risk’ is intended as: social, environmental, political
or economic. Often objects to be ranked are valued by a multi-dimensional attribute which is usually transformed into a composite
numerical score. In spite of conventional solutions, the author agrees with recent recommendations of performing multiple
ranking, keeping indicators separated. Different innovative methods are analyzed and compared: Hasse diagrams method, POSAC
and Nonlinear PCA. The first one stems directly from partial order theory, the second one may be seen as an approximation
of Hasse representation in a two dimensional space, whilst the third one belongs to the wide set of non-linear multivariate
techniques and it is particularly suitable in handling data of categorical type. Among them, the first two methods compare
objects on the basis only on order property of data, whilst the last one simultaneously performs an optimal scale of qualitative
attributes and a ranking of objects. The case study is based on the Eurobarometer survey carried out in 2002, at the request
of the European Commission, which collects Europeans opinion about various political and social issues. The analysis is focused
on users’ level of satisfaction about access easiness, cost, quality, information received and contracts of various services
of general interest, such as telephone services, power (gas and electricity) providers, water and postal utilities, urban
and rail transports. Separate indicators are set up for each facet of each service within different European regions. Eventually,
the ranking of European regions is performed on the basis of the overall performance of services of general interest, as perceived
by users. Selected methods lead to almost alike results, still with some differentiations due to different approaches used.
As it frequently occurs, each method has its own advantages and pitfalls which are here explored and compared. 相似文献
9.
跨区域监管在国外已积累了丰富的成功经验,国内现行的跨区域监管机构尚处于起步探索阶段,存在分工不明、职责不清晰,信息流通不畅顺,协调不力等问题。在研究我国流域管理机构职能的基础上,提出在我国的跨区域、流域环境管理机构中引入第三方服务,可为流域管理提供监测、民意调查和投资等服务功能,有利于打破行政区域的分割,减少跨区域环境质量数据的差异性,真实有效地反映流域的环境状况,减少不同行政部门之间在流域管理上的矛盾,有利于完善流域环境机构,建立事故发生通报机制、监测结果互通机制、共同监测机制和协调处置机制。 相似文献
10.
Annet Forkink 《Journal of Environmental Planning and Management》2017,60(11):2071-2084
This research investigates the use of an Assessment of Ecosystem Services (AES) approach as a planning tool in Florida through the use of an online survey. Target respondents were professionals who had been involved in AES projects. The majority of the respondents perceive an AES approach as a comprehensive and holistic approach that results in better land-use planning decisions. However, AES does not appear to be widely used to guide planning decisions. Despite some challenges, respondents across multiple agencies and institutions in Florida are supportive of using AES in combination with traditional land-use planning tools. More rigorous testing and validation and clarification of guidelines for best practice could improve political and economic support and thereby facilitate the use of AES to guide land-use planning efforts. 相似文献