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143.
The interaction between pollution sources change and implementation of air pollution control measures was the main driving factor that caused the variation in air quality. 相似文献
144.
Ju Zhang Zhiyun Ouyang Hong Miao Xiaoke Wang State Key Laboratory of Urban Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing China. 《环境科学学报(英文版)》2011,(12)
The rapid development in Beijing, the capital of China, has resulted in serious air pollution problems. Meanwhile great efforts have been made to improve the air quality, especially since 1998. The variation in air quality under the interaction of pollution and control in this mega city has attracted much attention. We analyzed the changes in ambient air quality in Beijing since the 1980’s using the Daniel trend test based on data from long-term monitoring stations. The results showed that different polluta... 相似文献
145.
Robert K. Dixon Xi Wang Michael Q. Wang Ju Wang Zhihong Zhang 《Mitigation and Adaptation Strategies for Global Change》2011,16(7):775-789
The demand for urban transportation in China, including cars, motorbikes, buses, and trains, is growing substantially. China’s
transportation fleet is projected to expand from 16 to 94 million vehicles between 2000 and 2020, with liquid and electricity
transport fuel demand growing from about 5 Quadrillion British Thermal Units (Quads) to over 20 Quads in 2035. In response
to energy security, economic growth and environmental protection needs, Chinese government agencies, academia and the private
sector have organized their programs and investments to advance development and demonstration of sustainable alternative transportation
systems. This analysis surveys historic development of fuel cell vehicle (FCV) including fuel cell buses (FCB) technology
in China, summarizes recent efforts to scale-up FCV development and associated infrastructure in major Chinese cities, and
briefly addresses future directions in Chinese fuel cell and hydrogen energy technology development. Since the late 1990’s,
Chinese universities, government institutions and the private sector have implemented research, development, demonstration
and deployment programs for electric (EV), fuel cell (FCV), and hybrid electric vehicles (HEV). These efforts have advanced
the feasibility of FCVs to be a part of sustainable urban transportation system, including technical performance, infrastructure,
and customer acceptance. Three generations of FCVs, START I, START II and START III have been developed, demonstrated and
deployed. Similarly, several generations of FCBs have been developed and demonstrated. Collectively, these efforts have demonstrated
and deployed over 1,000 FCBs and FCVs in several Chinese cities. Large-scale, intensive-use FCV and FCB demonstration trials,
including those during the 2008 Beijing Olympics and the 2010 Shanghai World Exposition (EXPO), have been successfully built
and operated. Infrastructure, such as hydrogen production facilities, fuelling stations, and maintenance stations have been
constructed and operated to support the fleets of FCBs and FCVs. Experiences learned from these FCV research, development,
and demonstration activities are the foundation for scaling up infrastructure and fleet trials in a growing number of cities
in eastern and western China. An aggressive research and development vision and 2020 technology performance targets provide
a foundation for the next generation of EVs, FCVs and HEVs, and, options for China’s efforts to develop a portfolio of sustainable
transportation systems. 相似文献
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通过对噪声在人们日常生活中的影响与干扰,分析了目前建筑业在开发房地产时忽略噪声这一问题的主要原因,明确指出房地产开发商应将噪声控制在人们对居住环境达到满意或者基本满意,给居民一个优雅、安静的生存环境。 相似文献
149.
As a special ecosystem, an urban forest park, which is different from a regular “forest park”, is one of the key elements involved in improving the urban ecological environment and promoting the sustainable development of a city. The “urban forest park” can also significantly improve living conditions by acting as a greenbelt. The Chengdu Longquan Mountain Urban Forest Park is a rare mountain urban forest park located in the center of the city. This “urban forest park” not only provides more ecological products and maintains ecological security but also meets the growing needs of people for food, environmental quality, and spirituality. To comprehensively assess the ecological value of the Chengdu Longquan Mountain Urban Forest Park, this study used the literature analogy and questionnaire survey methods to establish a targeted ecosystem service assessment system in this study area. In addition, combined with the hierarchical analysis method, the indicator system was tested, and the specific evaluation index was determined. In the Longquan Mountain Urban Forest Park Ecosystem Service Value Index System, three first-level indicators, such as ecological material products (with a weight of 0.412 6), ecological regulation (0.327 5), and dwelling culture (0.259 9); eight secondary indicators, such as product production (0.206 3), resource supply (0.206 3), and biodiversity (0.194 4); and twenty-three tertiary indicators, such as air negative oxygen ion (0.154 7), habitat quality (0.095 9), and ecological health benefit (0.075 5), were identified. From the weights of the first and second indicators, it was clear that the supply of ecological material products is the main service function in the Longquan Mountain Urban Forest Park ecosystem. Moreover, from the weights of the third indicator, the public’s cognition and concept of the ecosystem service value of the “urban forest park” gradually shifted from the supply service of products and resources to cultural services. In summary, the ecosystem service value assessment system designed for the Longquan Mountain Urban Forest Park in this study has certain feasibility and extensibility that lays a theoretical foundation for the scientific assessment of ecological value and ecological value realization mechanism for other “forest parks” worldwide. © 2022 Authors. All rights reserved. 相似文献
150.
Li Changlian Ju Liangliang Yang Mei Zhang Qi Sun Shu Cao Jiyu Ding Rui 《Environmental science and pollution research international》2022,29(4):5144-5152
Environmental Science and Pollution Research - Effects of prenatal ambient air pollution exposure could increase the risk of adverse pregnancy outcomes, which have been well documented by various... 相似文献