战略环境评价的系统分析

介绍了战略环境评价系统的组成要素,即评价者、评价对象、评价目的、评价标准和评价方法,分析了其相互关系及各要素与战略环境评价系统的关系,通过对战略环境评价的战略结构分析,提出了战略环境评价的工作程序.     

环境价值评估方法综述

对目前国内外的环境价值评估方法进行了综述，并提出了一套适合我国国情的价值评估方法，该方法分为１４类２９个指标，作为完善我国环境价值评估体系的一种建议提出。     

Stipulation of the criteria for the construction of eco agricultural county in China

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酸性矿山废水的处理研究

简要分析了酸性矿山废水的主要污染物及危害,叙述了几种主要的处理技术:中和法、硫化沉淀浮选法、微生物法和人工湿地,并介绍了它们的机理、特点及实验研究和工业应用情况,由此对我国的酸性矿山废水的治理技术进行了前景展望。     

环境税法律问题研究

在市场经济条件下，环境保护有必要更好地运用经济手段。环境税是一项重要的经济激励制度，但在我国仍是个新概念。探讨了环境税的概念特征、理论依据、税种和税制设计。     

二十一世纪大型炼油厂给排水系统节水设计

分析了我国炼油厂环境污染存在的问题，提出了21世纪炼油厂给排水系统节水的具体措施。     

Efficient degradation of organic pollutants by S-NaTaO3/biochar under visible light and the photocatalytic performance of a permonosulfate-based dual-effect catalytic system

Removing large concentrations of organic pollutants from water efficiently and quickly under visible light is essential to developing photocatalytic technology and improving solar energy efficiency. This study used a simple hydrothermal method to prepare a non-metallic, S-doped NaTaO₃ (S-NTO) photocatalyst, which was then loaded onto biochar (BC) to form a S-NTO/BC composite photocatalyst. After uniform loading onto BC, the S-NTO particles transformed from cubic to spherical. The photogenerated electron-hole pair recombination probability of the composite photocatalyst was significantly lower than those of the NTO particles. The light absorption range of the catalyst was effectively widened from 310 nm UV region to visible region. In addition, a dual-effect catalytic system was constructed by introducing peroxymonosulfate (PMS) into the environment of the pollution to be degraded. The Rhodamine B, Methyl Orange, Acid Orange 7, tetracycline, and ciprofloxacin degradation efficiency at 40 mg/L reached 99.6%, 99.2%, 84.5%, 67.1%, and 70.7%, respectively, after irradiation by a 40 W lamps for 90 min. The high-efficiency visible-light catalytic activity of the dual-effect catalytic system was attributed to doping with non-metallic sulfur and loading of catalysts onto BC. The development of this dual-effect catalytic system provides new ideas for quickly and efficiently solving the problem of high-concentration organic pollution in aqueous environments, rationally and fully utilizing solar energy, and expanding the application of photocatalytic technology to practice.     

Amniotic fluid fibrinolytic system in fetal neural tube defects

Second trimester amniotic fluid fibrinolytic system was examined in normal pregnancies and those complicated by anencephaly, spina bifida and fetal chromosome abnormalities. No significant difference was demonstrated between the fibrinolytic systems from normal pregnancies and those complicated by fetal chromosome abnormalities. In pregnancies complicated with anencephaly and spina bifida no significant difference was demonstrated for alpha-1-antitrypsin, alpha-1-antichymotrypsin and urokinase. Plasminogen was significantly lower (p < 0.02) and plasmin significantly higher (p < 0.001) than levels from normal amniotic fluid. Alpha-2-macroglobulin, fibrinogen, FDP-D and FDP-E were detected only in pregnancies complicated with anencephaly and spina bifida.     

南方涝渍地区退田还渔的一个实例分析

以江汉平原四湖涝渍地区的一个经围湖造田形成的典型农业微域为研究对象,在对其土壤和作物生长状况进行调查的基础上,探讨了退田还渔的必要性与具体方案。结果表明,对小型湖泊通过围湖造田所形成的农业微域,在人工排水和土地平整不充分的情况下,其地貌和土壤还残留有原有湖泊的影响,处于原湖泊低处的土壤表现出明显的沼泽化和严重潜育化的特征。在该地区种植水稻产量比正常地区减产达16%～26.8%。利用数量化理论Ⅰ确定了该地区适宜退田还渔的具体位置和面积。按照这一方案实施的结果,该地区从1997～2001年的5年中精养鱼塘面积增加9倍,养鱼的效益比种植水稻高5～10倍,还减轻了该地区夏季和冬季的排水压力。     

用VB语言编制水环境管理决策支持系统

在分析国内外环境管理决策支持系统（ＥＤＳＳ）开发现状的基础上，提出了采用Ｍｉｃｒｏｓｏｆｔ Ｖｉｓｕａｌ Ｂａｓｉｃ来开发水环境管理决策支持系统（ＷＥＭＤＳＳ）的方法，并利用程序语言编制了广东省潭江的ＷＥＭＤＳＳ。实例研究表明，充分利用ＶＢ编程语言的特点，可以快速方便地完成ＷＥＭＤＳＳ的结构设计和实现系统的各项功能。