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961.
962.
963.
Determinants of the Willingness-to-Participate in an Environmental Intervention in a Beirut Neighborhood 总被引:1,自引:1,他引:0
Participatory environmental management can empower communities and enhance the sustainability of environmental interventions.
However, existing power structures and inequalities along class, gender, or ethnic lines could prevent part of the community
from accessing the full benefits of the intervention. An analysis of determinants of the willingness-to-participate in an
environmental intervention in a Beirut neighborhood is conducted. Socioeconomic, health-risk distribution, and perception
of community efficacy are used as predictors. A randomly selected sample of residents was surveyed. Respondents were asked
to specify the frequency with which they were willing to be involved in an intervention to address priority environmental
problems in the neighborhood. Bivariate and multivariate ordinal regression analyses were conducted. Tests of significance
were based on the 95% confidence intervals (CI) of the odds ratio (OR). Males versus females (OR = 4.89, P < 0.001), respiratory patients versus nonsufferers (OR = 5.65, P < 0.001), tenants versus house owners (OR = 2.98, P < 0.01), and the less educated versus the more educated (OR = 2.42, P < 0.05) were significantly more likely to be willing to participate. The reluctance of female community members to participate
might be a major hindrance to community-based environmental protection and special strategies must be devised to overcome
it. On the other hand, respondents suffering from an illness perceived to be related to environmental toxins are likely to
be strong participants in environmental conservation efforts. Finally, the study yielded no evidence that belief or lack of
it in the efficacy of community action is a good predictor of the willingness-to-participate in such action. 相似文献
964.
Assessment of New Vehicles Emissions Certification Standards in the Metropolitan Area of Mexico City 总被引:1,自引:0,他引:1
Light duty gasoline vehicles account for most of CO hydrocarbons and NOx emissions
at the Metropolitan Area of Mexico City (MAMC). In order to ameliorate air pollution from the beginning of 2001, Tier 1 emission standards became mandatory for all new model year sold in the country. Car manufacturers in Mexico do not guarantee the performance of their exhaust emissions systems for a given mileage. The purpose of this study was to assess whether the Tier 1 vehicles will stand the certification values for at least 162000 km with the regular fuel available at the MAMC. Mileage accumulation and deterioration show that certified carbon monoxide emissions will stand for the useful life of the vehicles but in the case of non-methane hydrocarbons will be shorter by 40%, and nitrogen oxides emissions above the standard will be reached at one third of the accumulated kilometers. The effect of gasoline sulfur content, on the current in use Tier 1 vehicles of the MAMC and the impact on the emissions inventory in year 2010 showed that 31000 extra tons of NOx could be added to the inventory caused by the failure of the vehicles to control this pollutant at the useful life of vehicles. 相似文献
965.
966.
排污总量管理的首要任务是确定区域污染物排放总量。针对我国的水污染监测管理系统的现状,本文提出了一种“系统特征值核定排污总量方法”。该法以城市或城市某排污区的排污干管(或河道)输出的污染物总量实测值为基本依据,对各种排污总量的申报统计值进行正误的识别、校核与调整,汇总综合评价结果,核定排污总量及各个分量。该方法既使核定的排污总量增加科学性和准确性,又减少了核定的工作量;即使缺乏排污申报数据,也能迅速可靠地掌握城市的排污总量。该方法的有效性已在济南市应用中得到证实 相似文献
967.
大气环境质量预测模型研究 总被引:9,自引:0,他引:9
为适应青岛和贵阳地区地形和大气流场复杂的特点,吸收高斯烟云模式和烟团模式的优点,建立高斯轨迹烟云模式,模式同时考虑静风条件下的扩散。应用青岛和贵阳的实测数据对模式的性能进行检验,结果证明,该模式可适用于地形和流场复杂的地区。该模式是环境决策支持系统的一部分。 相似文献
968.
969.
针对我国大气环境管理的发展及实际情况,运用系统分析及目标规划的方法,设计了大气环境标准体系。大气标准体系包括基础标准、大气环境质量标准、排放标准、方法标准、样品标准、燃料使用标准、产品设备大气环保标准、环保行业大气环境保护标准。同时,在大气标准体系中将总量控制思想引入大气污染物排放标准的规定,提出按大气污染物的特征,分3种类型制定大气污染物排放标准等。 相似文献
970.