不同海拔珠芽蓼抗氧化系统的研究

对生长在青藏高原不同海拔地区的多年生高山植物珠芽蓼(Polygonum viviparum L.)的抗氧化系统进行了测试，以探讨高山植物对于高寒环境的适应机理。结果表明：随着海拔的升高，叶绿素a(chla)、叶绿素b(chlb)含量明显下降，chla／chlb增大，珠芽蓼叶和根细胞的膜脂过氧化均加剧，丙二醛(MDA)含量明显增加。3种抗氧化酶的活性受到明显影响，其中叶片中过氧化物酶(POD)和超氧化物歧化酶(SOD)活性，随海拔升高而活性降低，而均与根中的变化趋势相反，过氧化氢酶(CAT)活性随海拔升高呈增强的趋势，且叶片中活性较根中变化明显，抗坏血酸(AsA)随海拔的升高，含量呈明显增加，膜脂过氧化与抗氧化物酶的变化具有不一致性，这可能表明两种抗氧化系统之间存在一定的协同作用，特别是高含量的抗坏血酸，可能在高山植物适应高寒环境的胁迫方面具有更加重要的作用。图5表1参22。     

有机碳源对一体化厌氧氨氧化反应器脱氮性能的影响

试验通过在进水中投加有机碳源(白糖),研究有机碳源对一体化厌氧氨氧化反应器脱氮性能的影响。试验结果表明:进水COD浓度对一体化厌氧氨氧化反应器脱氮性能产生明显的影响。当进水中COD浓度约为50mg/L时,即可导致系统总氮去除率大幅度下降,出水总氮去除率由不添加COD的87.8%降至76%,氨氮去除率由不添加COD的98.8%降至85%;当进水COD浓度上升至约100mg/L时,出水总氮的去除率由不添加COD的87.8%降至69%,氨氮去除率由不添加COD的98.8%降至77%;当进水COD浓度约为100mg/L时,并将调节槽曝气量由原来的0.4L/min增至0.6L/min,系统出水水质明显得到优化,总氮去除率恢复到未投加COD时的水平。有效地控制一体化厌氧氨氧化反应器内有机碳源的量,能明显地提高系统的脱氮效果。     

Discusgon on Application of Asbestos- containing Products

石棉在建筑、制动等行业应用的弊端早已得到重视,由此引起的国际性的环境及制品污染事故均以无法弥补的生命、健康损失和天价赔偿为最终代价.根据当前各国针对含石棉物质的限量要求、检测方法和法令,提出中国应采取的积极应对措施,重点在法令、标准的宣贯、新产品的开发以及检测方法的普及.     

The importance of Indigenous Peoples’ lands for the conservation of terrestrial mammals

Indigenous Peoples’ lands cover over one-quarter of Earth's surface, a significant proportion of which is still free from industrial-level human impacts. As a result, Indigenous Peoples and their lands are crucial for the long-term persistence of Earth's biodiversity and ecosystem services. Yet, information on species composition on these lands globally remains largely unknown. We conducted the first comprehensive analysis of terrestrial mammal composition across mapped Indigenous lands based on data on area of habitat (AOH) for 4460 mammal species assessed by the International Union for Conservation of Nature. We overlaid each species’ AOH on a current map of Indigenous lands and found that 2695 species (60% of assessed mammals) had ≥10% of their ranges on Indigenous Peoples’ lands and 1009 species (23%) had >50% of their ranges on these lands. For threatened species, 473 (47%) occurred on Indigenous lands with 26% having >50% of their habitat on these lands. We also found that 935 mammal species (131 categorized as threatened) had ≥ 10% of their range on Indigenous Peoples’ lands that had low human pressure. Our results show how important Indigenous Peoples’ lands are to the successful implementation of conservation and sustainable development agendas worldwide.     

含石棉制品(ACM)应限制使用

石棉在建筑、制动等行业应用的弊端早已得到重视,由此引起的国际性的环境及制品污染事故均以无法弥补的生命、健康损失和天价赔偿为最终代价。根据当前各国针对含石棉物质的限量要求、检测方法和法令,提出中国应采取的积极应对措施,重点在法令、标准的宣贯、新产品的开发以及检测方法的普及。     

不同催化剂在等离子体空气净化器中的应用

实验证明利用等离子体技术去除室内空气中的挥发性有机物,在合适的流量和较高的放电电压下,可以达到90%以上的去除效果。但是如果对其产生的臭氧、CO等气体不加以处理,会对室内空气造成二次污染。本研究以等离子体技术净化室内空气后产生的尾气为研究对象,考察利用催化转化技术去除这类尾气的效果,并探讨合适的后置催化剂和催化温度。     

江苏北部城镇绿化策略研究

在对江苏北部气候,植物区系,森林植被研究的基础上,从生态学角度提出该地区城镇绿化策略,包括：立足于落叶阔叶树种,积极引种耐寒发阔叶树种,根据生境特点合理布局树种。     

Remotely-Sensed Active Fire Data for Protected Area Management: Eight-Year Patterns in the Manas National Park, India

The Terai-Duar savanna and grasslands, which once extended along most of the Himalayan foothills, now only remain in a number of protected areas. Within these localities, grassland burning is a major issue, but data on frequency and distribution of fires are limited. Here, we analysed the incidence of active fires, which only occur during the dry season (Nov.–Mar.), within a significant area of Terai grasslands: the Manas National Park (MNP), India. We obtained locations of 781 fires during the 2000–2008 dry seasons, from the Fire Information for Resource Management System (FIRMS) that delivers global MODIS hotspot/fire locations using remote sensing and GIS technologies. Annual number of fires rose significantly from around 20 at the start of the study period to over 90 after 2002, with most (85%) detected between December and January. Over half of the fires occurred in tall grasslands, but fire density was highest in wetland and riverine vegetation, dry at the time. Most burning took place near rivers, roads and the park boundary, suggesting anthropogenic origins. A kernel density map of all recorded fires indicated three heavily burnt areas in the MNP, all within the tall grasslands. Our study demonstrates, despite some technical caveats linked to fire detection technology, which is improving, that remote fire data can be a practical tool in understanding fire concentration and burning temporal patterns in highly vulnerable habitats, useful in guiding management.