JYZ-1型烟气浊度在线监测仪介绍

介绍了JYZ-1型烟气浊度在线监测仪的测量原理、特点及其在环境监测中的应用。     

自然生态小区建设指导原则及其建设内容探讨--以筠连县大雪山自然生态小区为例

自然生态小区是构建优美生态环境区域的生态“细胞工程”。它根据当地的自然状况和社会经济状况,以较小的经济和社会代价实现一定区域生态环境优美、生态文明有序、生态系统良性循环的社会经济生态综合体。由于自然生态小区的建设是新兴事物,其建设途径还有很多问题值得探讨。在自然生态小区建设投资方面,应当明确生态环境建设投资和生产赢利建设投资,对于前者应当以政府和政策性投资为主,而后者应当是在政策法规规范下的企业投资为主;在发展模式方面,应当促进环境友好的规模化高效益产业,包括有机绿色产业、地方特色产业、民族文化产业等;在效益分配方面,必须要充分考虑整个社区居民资源共享和利益合理分配,实现整个社区生态文明建设和经济发展目标的一致。     

大气环境影响评价工作分级要求要点

根据大气环境影响评价工作的分级要求,提出了针对性的工作要点,以满足大气环境评价工作的需要.     

沉水植物对富营养化水体的净化效果研究

通过建立小型围隔区,研究了沉水植物对富营养化水体中氮、磷等污染物的净化效果,以及对底泥中磷含量的影响.结果表明:(1)在放养沉水植物的围隔水体中各种营养盐浓度明显低于对照围隔;(2)沉水植物对磷的吸收能够有效地保持底泥中磷的含量,而在对照围隔中的底泥中磷元素含量却不断增加;(3)经50天后,水体中TN、NH4 -N、TP、PO43--P和CODMn平均去除率分别为36.3%、70.5%、54.6%、65.4%和43.1%.     

企业逆向物流与循环经济立法之联系

逆向物流给企业带来效益的同时,也带来了生态物流的理念.逆向物流涉及了经济与生态环境两大系统,显现出了自身的特点与积极因素.逆向物流充分体现了循环经济发展之宗旨.加速循环经济的立法,并以相应立法来推动企业尽快实施物流活动是至关重要的.     

Relationship Between Tourism Development and Vegetated Landscapes in Luya Mountain Nature Reserve, Shanxi, China

The relationship between tourism development and vegetated landscapes is analyzed for the Luya Mountain Nature Reserve (LMNR), Shanxi, China, in this study. Indices such as Sensitive Level (SL), Landscape Importance Value (LIV), information index of biodiversity (H’), Shade-tolerant Species Proportion (SSP), and Tourism Influencing Index (TII) are used to characterize vegetated landscapes, the impact of tourism, and their relationship. Their relationship is studied by Two-Way Indicator Species Analysis (TWINSPAN) and Detrended Correspondence Analysis (DCA). TWINSPAN gives correct and rapid partition to the classification, and DCA ordination shows the changing tendency of all vegetation types based on tourism development. These results reflect the ecological relationship between tourism development and vegetated landscapes. In Luya Mountain Nature Reserve, most plant communities are in good or medium condition, which shows that these vegetated landscapes can support more tourism. However, the occurrence of the bad condition shows that there is a severe contradiction between tourism development and vegetated landscapes.     

Difference of performance in response to disease admissions between daily time air quality indices and those derived from average and entropy functions

Environmental Science and Pollution Research - Daily time air quality indices, which can reflect air quality in 1 day, are suitable for identifying daily exposure during conditions of poor...     

一种导电混凝土的制备及其电阻率测量

本文综述了导电混凝土的发展以及应用情况，提出了用导电混凝土作为接地材料的设想，并选择氧化铁粉作为骨料，添加适量碳粉配制了一种导电混凝土来验证。通过改变不同的配比制作导电混凝土模型，用四电极法测量其电阻率，得出碳粉比例对其电阻率的影响。     

Experimental and simulated evaluations of airborne contaminant exposure in a room with a modified localized laminar airflow system

Environmental Science and Pollution Research - The traditional mixing ventilation is not an energy effective approach to remove indoor air pollutants, maintain breath zone air quality, and control...     

Occurrence of dioxin-like POPs in soils from urban green space in a metropolis,North China: implication to human exposure

Environmental Science and Pollution Research - Urban green space is a special space for urban life and natural contact and has an important impact on human health. However, little information is...