滇池的富营养化现状分析及其防治对策

分析了滇池的富营养化发展状况及其产生的危害，针对滇池污染的原因和造成富营养化的因素，提出了防治对策。     

太行山前平原农牧结构模式评价与配套技术体系

农牧结构生产模式是太行山前平原农业生产的重要模式。苜蓿具有明显的经济效益、水分效益和土壤培肥作用。种植-畜牧模式农田亚系统可节约灌溉35%、具有显著的经济效益和能效,苜蓿氮、磷产出投入率远高于小麦-玉米两熟制和棉花;畜牧亚系统氮素327%、磷素259%可归还农田亚系统,实行一定程度的养分循环。农牧结构优化模式的配套技术体系体现在制定合理的农牧比例、农田亚系统高效管理、调整畜牧结构、秸秆饲用处理、饲料作物和牧草种植技术以及农牧物质循环技术,其中制定合理的农牧比例、调整畜牧结构是关键。综合协调应用这些技术,最终能够实现提高农牧结构优化模式农业资源综合利用效率20%～30%的目标。     

An empirical analysis of green switching intentions in the airline industry

The purpose of this research is to gain an empirical understanding of airline passengers’ green switching intentions. A conceptual research model is used as a framework to examine the relationships among the experiential quality dimensions, green perceived value, green corporate image, green experiential satisfaction, green corporate reputation, green experiential loyalty and green switching intentions for the airline industry. The data used in this paper were based on a sample of 615 passengers who experienced the eco-friendly services of China Airlines, indicating that the proposed model fitted the data. The study's result will assist airline management to develop and implement market-orientated service strategies to increase the experiential quality dimensions, green perceived value, green corporate image, green experiential satisfaction, green corporate reputation and green experiential loyalty in order to decrease passengers’ green switching intentions.     

用四-(对氨基苯基)-卟啉柱前衍生的高效液相色谱法测定重金属

研究了用固相萃取富集、快速分离柱高效液相色谱法测定环境水样中镍、锡、铅、镉、汞5种重金属的方法。环境水样中的镍、锡、铅、镉、汞用四-(对氨基苯基)-卟啉(T4APP)柱前衍生,然后用ZORBAX RP18固相萃取小柱萃取富集镍、锡、铅、镉、汞的T4APP络合物,经富集后的络合物用甲醇-丙酮(体积比95∶5)为流动相,ZORBAX Stab le Bound(4.6 mm×50 mm,1.8μm)快速分离柱为固定相分离,用二极管矩阵检测器检测。镍、锡、铅、镉、汞的检测限分别为4,5,4,3,3 ng/L,分离5种重金属元素络合物的时间只需2.0 m in,相对标准偏差为2.2%~4.1%,加标回收率为88%~104%。用该法测定环境水样中的痕量镍、锡、铅、镉、汞,结果令人满意。     

Physiological effects of tetracycline antibiotic pollutants on non-target aquatic Microcystis aeruginosa

This study aimed to evaluate the aquatic toxicity of three typical tetracycline antibiotics, including tetracycline, oxytetracycline, and chlortetracycline, on the cyanobacterium Microcystis aeruginosa. The cell density, chlorophyll a content, protein content, and enzymatic antioxidant activities were determined. The results showed that the cell growth was significantly inhibited by the three compounds at a low concentration. The chlorophyll a and protein content decreased significantly after exposure to 0.05 mg L^?1 of each compound for 9 d. When exposed to 0.2–1 mg L^?1 of tetracycline, the superoxide dismutase (SOD) activity increased, but peroxidase (POD) and catalase (CAT) activities decreased. In contrast, when exposed to oxytetracycline and chlortetracycline at different concentrations ranging from 0.2 to 1 mg L^?1 and from 0.01 to 0.05 mg L^?1, the SOD activity decreased, but the POD and CAT activities increased. These findings indicate that tetracycline antibiotics influence cell growth and protein synthesis, and they also induce oxidative stress in M. aeruginosa at environmentally similar concentrations. Thus, this study may provide further insights into the toxic effects of tetracycline antibiotics and the controlled use of antibiotics.     

基于CaO2的污泥处理应用技术研究进展

随着污水处理厂排泥量的剧增,污泥的处理处置成为当今急需解决的环境问题之一。基于目前污泥处理中CaO₂相关技术的研究现状,综述了CaO₂技术对于污泥减量化、无害化、资源化处理的促进作用,包括改善污泥脱水性能、实现污泥增溶减量、去除污泥中的有机污染物及重金属、促进污泥厌氧消化产酸产氢产甲烷等,展望了CaO₂相关技术的发展前景,以期为CaO₂相关污泥处理技术的研究与应用提供参考。     

CO2 emissions from tropical drained peat in Sumatra,Indonesia

With the increasing use of tropical peatland for agricultural development, documentation of the rate of carbon dioxide (CO₂) emissions is becoming important for national greenhouse gas inventories. The objective of this study was to evaluate soil-surface CO₂ fluxes from drained peat under different land-use systems in Riau and Jambi Provinces, Sumatra, Indonesia. Increase of CO₂ concentration was tracked in measurement chambers using an Infrared Gas Analyzer (IRGA, LI-COR 820 model). The results showed that CO₂ flux under oil palm (Elaeis guineensis) plantations ranged from 34?±?16 and 45?±?25 Mg CO₂ ha^–1 year^–1 in two locations in Jambi province to 66?±?25 Mg CO₂ ha^–1 year^–1 for a site in Riau. For adjacent plots within 3.2 km in the Kampar Peninsula, Riau, CO₂ fluxes from an oil palm plantation, an Acacia plantation, a secondary forest and a rubber plantation were 66?±?25, 59?±?19, 61?±?25, 52?±?17 Mg ha^–1 year^–1, respectively, while on bare land sites it was between 56?±?30 and 67?±?24 Mg CO₂ ha^–1 year^–1, indicating no significant differences among the different land-use systems in the same landscape. Unexplained site variation seems to dominate over land use in influencing CO₂ flux. CO₂ fluxes varied with time of day (p?<?0.001) with the noon flux as the highest, suggesting an overestimate of the mean flux values with the absence of night-time measurements. In general, CO₂ flux increased with the depth of water table, suggesting the importance of keeping the peat as wet as possible.     

室内化学污染及治理

不论是工作还是起居亦或健身运动,现代都市人越来越依赖室内.这时室内环境的质量就尤其重要.本文就室内环境污染介绍了它对我们生活的影响,一些主要化学污染物的性质来源及中毒症状,在最后讲述了一些预防治理措施.     

浅议啤酒项目环境影响评价中的公众参与

对啤酒项目环境影响评价中公众参与的法律依据、公众参与的方式、公众参与实际执行过程中应注意和存在的问题进行了较为详细的探讨。