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根据2019年7月国务院印发和出台的《国务院关于实施健康中国行动的意见》(国发〔2019〕13号)和《健康中国行动(2019—2030年)》提出的相应考核指标,在基本理念、基本知识和基本技能3个生态环境与健康素养一级分类指标中,当调查对象得分之和大于或等于卷面分数的70%,则认为其具备该分类生态环境与健康素养.居民整体... 相似文献
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中国南中国海海岸湿地退化现状和保护对策 总被引:4,自引:0,他引:4
南中国海湿地包括广东省、香港特别行政区、澳门特别行政区、广西壮族自治区和海南省等五个行政区,总面积为15 393.75 km2。由于受人口增加和经济发展的巨大压力,中国南中国海湿地破坏严重,退化趋势明显。本文在对中国南中国海地区海岸湿地的现状、类型及湿地退化的主要原因进行分析的基础上,提出中国南中国海地区海岸湿地资源保护与管理的建议,以便切实保护中国南中国海沿海多样化的湿地类型,持续发挥其生态服务功能。 相似文献
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An intensive investigation was conducted to study the distribution of polycyclic aromatic hydrocarbons (PAHs), to show firstly the level of pollution in the agricultural areas and analyses specifically the status of soil polluted by these persistent pollutants in some locations of Xiamen region. Soil samples collected from Jiulong agricultural catchment have been analysed for 16 PAH compounds, using gas chromatography flame ionization detection in order to determine the level of selected PAH components and to identify the factors that may control their distribution and persistence in the area. The main PAHs found in soil samples were the low molecular weight. The total PAHs detected in soil samples ranged from 0.50 to 0.95 μg/g soil. The highest values of PAHs were significantly detected in the orange tree leaves, which range from 236.1 to 249.3 μg/g soil showing recent atmospheric inputs of these volatile pollutants. The distribution of PAHs in vegetable were monitored and indicating that the concentration were high and ranged from 8.24 to 58.87 μg/g. Other sediment samples were also collected and analysed from urban sewage (5.26 μg/g dw), aquacultural (0.52 μg/g dw) and industrial areas (from 0.62 to 2.09 μg/g dw), during this investigation. The contamination of Jiulong river estuary and Xiamen Western Sea by PAHs has been then widely justified by wastcwatcr discharges and soil runoffs from these areas. The results, therefore, provide important information on the current contamination status caused by the atmospheric transport and point to the need for urgent actions to stop the release of these hydrocarbons to the environment. The necessity of implementing systematic monitoring of PAHs is also emphasized. 相似文献
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为研究高瓦斯易自燃煤层不同供风量、高抽巷抽采流量、低抽巷抽采流量3因素对采空区自燃“三带”分布影响规律,选取阳煤五矿8406工作面为研究对象,在数值模拟研究基础上,采用Design Expert软件进行Box Behnken试验设计,构建采空区氧化升温带宽度在3因素、3水平条件下的二次回归响应曲面模型,并对不同条件下采空区氧化升温带宽度进行预测与分析。结果表明:二次回归方程P值为0.001 6,预测模型显著,模型的失拟项为0.606 3,不显著,回归方程具有统计学意义;当供风量为1 500~2 000 m3/min,低抽流量为450~650 m3/min,高抽流量为100~200 m3/min时,对氧化升温带宽度一次项重要度排序为C(高抽巷抽采流量)>A(供风量)>B(低抽巷抽采流量),二次项重要度排序为AC(供风量和高抽巷抽采流量)>AB(供风量和低抽巷抽采流量)>BC(低抽巷抽采流量和高抽巷抽采流量),且AB,AC,BC之间均无交互作用。 相似文献
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Sunlu U 《Environmental monitoring and assessment》2006,114(1-3):273-286
Bio-monitoring of some heavy metal levels (Cd, Pb, Zn, Cu) in whole edible soft parts of Mytilus galloprovincialis (L. 1758) was conducted in Turkish Aegean Sea coast during the period of September 2002–August 2003 seasonally. Moreover, some physico-chemical environmental parameters, also have been analysed in the same region. The values of some physico-chemical environmental parameters in coastal waters of Turkish Aegean Sea were changed between; 9.0–27.0 ∘C for temperature, 31.93–40.45 psu for salinity, 7.35–8.48 for pH and 4.05–9.50 mg/l for dissolved oxygen. The levels of trace elements in whole edible soft parts including interstitial fluids of Mediterranean mussels M. galloprovincialis (L. 1758), sampled from 6 different regions of Turkish Aegean Sea coast have ranged between; 0.04–0.52 μg Cd/g wet weight, 0.49–1.72 μg Pb/g w.w., 0.95–1.85 Cu/g w.w., 16.11–37.15 μg Zn/g w.w. The highest values for all trace metals (Cd, Pb, Zn, Cu) were measured in inner part of Izmir Bay (station 3) and lowest in Sigacik and Gulluk Bay (station 5, 6). Generally heavy metal levels are lower than the results in soft mussel tissues reported from Mediterranean regions. 相似文献
78.
Karley Campbell Ilkka Matero Christopher Bellas Thomas Turpin-Jelfs Philipp Anhaus Martin Graeve Francois Fripiat Martyn Tranter Jack Christopher Landy Patricia Sanchez-Baracaldo Eva Leu Christian Katlein C. J Mundy Sren Rysgaard Letizia Tedesco Christian Haas Marcel Nicolaus 《Ambio》2022,51(2):318
Sea ice continues to decline across many regions of the Arctic, with remaining ice becoming increasingly younger and more dynamic. These changes alter the habitats of microbial life that live within the sea ice, which support healthy functioning of the marine ecosystem and provision of resources for human-consumption, in addition to influencing biogeochemical cycles (e.g. air–sea CO2 exchange). With the susceptibility of sea ice ecosystems to climate change, there is a pressing need to fill knowledge gaps surrounding sea ice habitats and their microbial communities. Of fundamental importance to this goal is the development of new methodologies that permit effective study of them. Based on outcomes from the DiatomARCTIC project, this paper integrates existing knowledge with case studies to provide insight on how to best document sea ice microbial communities, which contributes to the sustainable use and protection of Arctic marine and coastal ecosystems in a time of environmental change.Supplementary InformationThe online version contains supplementary material available at 10.1007/s13280-021-01658-z. 相似文献
79.
黄河河口区域有机污染物的特征分析 总被引:13,自引:5,他引:8
对2004年采集于黄河河口区域的水样进行了检测分析共鉴定出有机污染物8类192种,包括VOCs33种、SVOCs159种;其中属美国列出的129种优先控制污染物的有62种,属我国列出的58种优先控制污染物的有33种,属GB3838-2002控制的有31种.定量出的VOCs有19种,主要包括卤代烃类和单环芳香族类,其质量浓度平均值分别为0.683和0.609 μg/L;定量出的SVOCs有69种,主要包括多环芳烃类、酯类、单环芳香族类、卤代烃类、酚类和农药类,其质量浓度平均值分别为0.458,1.011,0.367,0.121,0 220和0.045 μg/L,其中多环芳烃类、酯类和单环芳香族类的污染程度相对较高,分别超标2.857,0.288和0.001~1.543倍. 相似文献
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