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61.
Integrated conservation approaches (ICAs) are employed by governments, communities, and nongovernmental organizations worldwide seeking to achieve outcomes with dual benefits for biodiversity conservation and poverty alleviation. Although ICAs are frequently implemented concurrently, interactions among ICAs and the synergies or trade-offs that result are rarely considered during program design, implementation, and evaluation. In support of more deliberate and effective use of ICAs, we examined interactions among four well-known strategies: biosphere reserves (BRs), voluntary protected areas (VPAs), payments for ecosystem services (PES), and community forest management (CFM). Through a comparative case study, we analyzed interactions among spatially or temporally clustered ICAs implemented on communally held and managed lands in three ecologically and socioeconomically distinct regions of Mexico. Our research methods combined policy analysis with data gathered through participant observation and semistructured interviews (n = 78) and focus groups (n = 5) with government officials, implementers, and participants involved in ICAs in 28 communities. Despite the significant differences among the regions in which they were implemented, we found that key actors at each level of involvement generally perceived interactions among ICAs as synergistic. The PES programs were perceived to strengthen protected areas by reducing forest cover loss in and around BRs, fostering proconservation attitudes, and incentivizing the establishment of VPAs. Communities that invested PES income in CFM were motivated to conserve forests beyond the duration of PES programs, and CFM in buffer zones was perceived to strengthen BRs by maintaining forest cover and generating income for communities. We also identified key social and environmental factors that can influence these interaction effects among ICAs. Based on these findings, we recommend further study of ICA interactions and intentionally complementary policy design to maximize positive environmental and social outcomes.  相似文献   
62.
我国环境问题的新特点加大了"单纯环境政策"的难度,同时高额的环境治理费用使政府"力不能胜".因为经济手段在解决环境外部性问题上会产生更大的利益激励和效率弹性,并将环境成本内化为经济主体的生产成本,促使企业基于利益最大化的考虑,做出最有利于环境的经济决策.因此,在环境政策的执行中加大经济手段的力度是大势所趋.  相似文献   
63.
Lately, requests have been made to include the contexts of enterprises in models to prevent accidents at work. This paper presents different contextual theories in order to analyze whether this type of theory could be a way to elaborate our understanding of context. A differentiation is made between (a) theories of understanding relations between enterprises and regulatory agencies and (b) theories to perceive the relation between enterprise and the broader context. The last group of theories has its point of departure in an organizational understanding diverging from the classical, rational understanding of organizations and organizational processes. The conclusion is that contextual theories open for an elaborated understanding of the role of contextual relations in accident prevention, but also that an investigation of the potentials for making the theories action-orientated is needed.  相似文献   
64.
安全文化是高风险组织安全控制理论研究的热点问题,特指高风险组织成员共享的价值观与行为规范系统,尤其强调安全的重要性。为探讨该类组织成员的行为规范,笔者采用参与观察方法对某石油化工厂进行研究。持续观察103天,记录现场发生的行为及其背景,然后把观察记录制成行为卡片,通过3名专家对现场观察行为进行分类发现,组织成员主要遵循包括:安全承诺、对规则的看法、对人性的看法、关系取向和权力影响等5类行为规范。其中:安全承诺,尤其是管理对安全的承诺是高风险组织安全文化的关键因素;中国的传统文化,如情境取向、关系取向对员工的不安全行为具有重要影响。  相似文献   
65.
The Sphere Project (consisting of both the Humanitarian Charter and Minimum Standards for Disaster Response) has made prominent contributions to the debates, thinking and work on the quality of assistance and accountability of aid agencies. However, since its inception in 1997, several agencies expressed concerns regarding Sphere's approach, many of which were confirmed by the Sphere evaluation (2002/3). The present article restates these concerns, and addresses more fundamental issues regarding Sphere's cornerstone. It questions the validity of Sphere's rights-based approach, which consists of a tenuous link between the rights of affected populations and standards for technical interventions. Sphere is founded on "the right to assistance", although this right does not exist in international law. Its elaboration would entail solving several complex legal and political issues, which Sphere fails to address. This article also questions the validity and usefulness of universal standards for technical performance in helping relief agencies provide adapted assistance to disaster-affected populations, in line with their mandates and principles. It suggests that Sphere's approach and content largely reflect the concerns, priorities and values of technical professionals in Northern agencies, leaving limited space to genuine "participation" by affected populations and partners from the South.  相似文献   
66.
在环境政策领域中,市场方法正迅速得到一些政府(尤其是美国)环境部门的重视和采纳.本文首先分析了该方法与传统管制手段的关系,然后介绍了各种市场方法的应用情况,最后对市场手段设计的技术原则进行了探讨.随着我国市场取向的经济体制改革的深入,市场方法将为我国的环境管理制度变革提供一项新的备选手段.   相似文献   
67.
During the last decade, forest certification has gained momentum as a market-based conservation strategy in tropical forest countries. Certification has been promoted to enhance forest management in countries where governance capacities are insufficient to adequately manage natural resources and enforce pertinent regulations, given that certification relies largely on non-governmental organisations and private businesses. However, at present there are few tropical countries with large areas of certified forests. In this study, we conducted semi-structured stakeholder interviews in Ecuador and Bolivia to identify key framework conditions that influence the costs and benefits for companies to switch from conventional to certified forestry operations. Bolivia has a much greater relative area under certified forest management than Ecuador and also significantly more certified producers. The difference in the success of certification between both countries is particularly notable because Bolivia is a poorer country with more widespread corruption, and is landlocked with less access to export routes. Despite these factors, several characteristics of the Bolivian forest industry contribute to lower additional costs of certified forest management compared to Ecuador. Bolivia has stronger government enforcement of forestry regulations a fact that increases the cost of illegal logging, management units are larger, and vertical integration in the process chain from timber extraction to markets is higher. Moreover, forestry laws in Bolivia are highly compatible with certification requirements, and the government provides significant tax benefits to certified producers. Results from this study suggest that certification can be successful in countries where governments have limited governance capacity. However, the economic incentives for certification do not only arise from favourable market conditions. Certification is likely to be more successful where governments enforce forestry laws, provide financial incentives for certified forestry, and provide land tenure security, and where large-scale and vertically integrated forestry operations are commercially feasible. For this reason, at present, there are few developing countries where forest certification is likely to achieve widespread success.  相似文献   
68.
Export of nitrogen from catchments: a worldwide analysis   总被引:2,自引:0,他引:2  
This study reviews nitrogen export rates from 946 rivers of the world to determine the influence of quantitative (runoff, rainfall, inhabitant density, catchment area, percentage of land use cover, airborne deposition, fertilizer input) and qualitative (dominant type of forest, occurrence of stagnant waterbodies, dominant land use, occurrence of point sources, runoff type) environmental factors on nitrogen fluxes. All fractions (total, nitrate, ammonia, dissolved organic and particulate organic) of nitrogen export showed a left-skewed distribution, which suggests a relatively pristine condition for most systems. Total nitrogen export showed the highest variability whereas total organic nitrogen export comprised the dominant fraction of export. Nitrogen export rates were only weakly explained by our qualitative and quantitative environmental variables. Our study suggests that the consideration of spatial and temporal scales is important for predicting nitrogen export rates using simple and easy-to-get environmental variables. Regionally based modelling approaches prove more useful than global-scale analyses.  相似文献   
69.
Planners and water managers seek to be adaptive to handle uncertainty through the use of planning approaches. In this paper, we study what type of adaptiveness is proposed and how this may be operationalized in planning approaches to adequately handle different uncertainties. We took a comparative case study approach to study two planning approaches: the water diplomacy framework (WDF) and adaptive delta management (ADM). We found that the approaches differ in their conceptualization of uncertainty and show that different types of adaptiveness are used in the approaches. While WDF builds on collaborative adaptive management as a set of ongoing adjustments and continuous learning to handle uncertainty, ADM deliberately attempts to anticipate future adaptations through a set of tools which allows for seizing opportunities and avoiding lock-in and lock-out mechanisms. We conclude that neither of the approaches is fully able to account for different uncertainties. Both approaches may benefit from specific insights in what uncertainty and adaptiveness entail for the development of water management plans.  相似文献   
70.
There is large usage of polybrominated diphenyl ethers (PBDEs) especially for decabromodiphenyl ether (BDE-209, Deca-BDE) in controlling the risks of fire. The toxicological effects of PBDEs are worth being concerned about. Female SD rats were daily gavaged with BDE-209 ether at the dose of 100 mg/kg for 20 days. Histological observation was performed for the screening of the target organs for BDE-209 exposure. The distribution and metabolism of PBDEs in the exposed main organs were evidenced by HRGC-HRMS. Alterations of the endogenous metabolite concentrations in urine were investigated using metabonomic approaches based on IH NMR spectrum. Histopathological changes including serious edema in kidney, hepatocellular spotty necrosis and perivasculitis in liver indicated that BDE-209 caused potential influences on endogenous metabolism in the exposed liver and the kidney. BDE-209 was found to be highly accumulated in lipid, ovary, kidney and liver after 20 days' exposure. Occurrence of other lower brominated PBDEs in the rats demonstrated that reductive debromination process happened in vivo. Hydroxylated and methoxylated-BDEs, as metabolism products, were also detected in the rat tissues. A total of 12 different endogenous metabolites showed obvious alterations in urine from the exposed rats, indicating the disturbance of the corresponding internal biochemical processes induced by BDE-209 exposure. These findings in vivo suggested the potential health risk might be of concern due to the toxicological effects of BDE-209 as a ubiquitous compound in the environment.  相似文献   
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