双向调控管理模式在县域生态建设中的应用

双向调控管理模式是我国在长期城市环境治理与生态建设实践中积累的成功模式之一。县域生态系统的特点以及县域系统中的各种生态问题起因人们对系统的不适应调控的现实说明：该模式的实质同样适用于县域生态建设。     

Economic valuation of health impacts of air pollution in Mumbai

Air pollution leads to serious negative impacts on health. Thephysical evidence is compelling. An attempt has been made inthis paper to establish dose-response relationship of AmbientAir Quality Index and human health, based on time spent by anindividual in different microenvironments during one day.Economic valuation of morbidity and mortality has been attemptedthrough lost salary approach. The results show that theavoidance cost is 29% of the total health damage cost.     

区域大气污染物日均浓度不同计算方法的比较

在计算区域典型日大气中ＳＯ２日均浓度时,对点源采用高斯烟流模式和烟团模式;对面源分别采用后退点源模式和面源积分模式,计算结果均与实际的监测值比较接近,但用面源积分模式得到的计算结果较后退点源模式更准确。     

人工湿地资源价值整体调整系数研究

构造人工湿地整体指标评价体系,采用三标度层次分析法计算权重初值,并结合Delphi专家咨询法和神经网络BP算法计算权重调整值,利用整体调整系数对人工湿地资源价值进行调整计算。以沈阳市马官桥人工湿地为例,计算出整体调整系数为1.2945,表明调整前的资源价值计算结果偏低;调整后资源价值为20453.98万元,比调整前增加4664.3万元,经济效益更加显著。     

环境政策综合调控机制及理论

环境政策综合调控系统由环境问题、不良环境行为等成分构成，各成分的相互作用及环境政策调控主体与政策对象的博弈影响环境政策效率。使用环境政策综合调控模型，准确调控位置、调控对象、利用综合调控工具能为环境政策调控创造条件和环境。     

城市环境问题与生态调控

应用复合生态系统理论系统分析了城市生态系统的组成、结构和功能特点，介绍了城市生态调控的主要方法及生态规划、生态工程、生态管理的研究内容。生态学原理及城市复合生态系统理论指导下的城市生态调控，是解决我国城市发展与环境保护问题，最终实现人与自然和谐统一、人与环境共同进化的重要途径。     

Impacts of meteorology and precursor emission change on O3 variation in Tianjin, China from 2015 to 2021

Deterioration of surface ozone (O₃) pollution in Northern China over the past few years received much attention. For many cities, it is still under debate whether the trend of surface O₃ variation is driven by meteorology or the change in precursors emissions. In this work, a time series decomposition method (Seasonal-Trend decomposition procedure based on Loess (STL)) and random forest (RF) algorithm were utilized to quantify the meteorological impacts on the recorded O₃ trend and identify the key meteorological factors affecting O₃ pollution in Tianjin, the biggest coastal port city in Northern China. After “removing” the meteorological fluctuations from the observed O₃ time series, we found that variation of O₃ in Tianjin was largely driven by the changes in precursors emissions. The meteorology was unfavorable for O₃ pollution in period of 2015-2016, and turned out to be favorable during 2017-2021. Specifically, meteorology contributed 9.3 µg/m³ O₃ (13%) in 2019, together with the increase in precursors emissions, making 2019 to be the worst year of O₃ pollution since 2015. Since then, the favorable effects of meteorology on O₃ pollution tended to be weaker. Temperature was the most important factor affecting O₃ level, followed by air humidity in O₃ pollution season. In the midday of summer days, O₃ pollution frequently exceeded the standard level (>160 µg/m³) at a combined condition with relative humidity in 40%-50% and temperature > 31°C. Both the temperature and the dryness of the atmosphere need to be subtly considered for summer O₃ forecasting.     

湖北省造纸行业污染防治和结构调整的调研

在对湖北省造纸行业的现状进行调查、摸底的基础上 ,通过对企业利润与治污成本的分析 ,并结合国家的有关产业技术政策 ,提出了湖北省造纸行业污染防治和结构调整的意见与建议。     

4200快速气体分析仪在环境应急监测中的应用

根据应急监测的要求以及4200快速气体分析仪的特点，重点研究了仪器在应急监测使用中应注意的问题。     

绿色贸易壁垒与农业生态环境保护

概述了世界贸易组织有关绿色贸易壁垒的原则和规则。阐述了欧盟的有关农产品质量标准和农产品标准的管理法规。分析了绿色贸易壁垒对我国农业结构战略性调整带来的影响以及对农业生态环境建设所提出的要求。最后，提出了我国克服绿色贸易壁垒的措施和手段。