云南镇沅金矿区煌斑岩矿物含量统计及其意义

利用镜下实测法和线性规划法统计了云南镇沅金矿区煌斑岩中矿物的实际含量。据此划分出该区煌斑岩岩石类型；总结出蚀变煌斑岩和矿化煌斑岩的过程中选岩矿物的变化规律；结合质量平衡计算，探讨了煌斑岩蚀交流体和矿化流体的性质。     

祁连—柴达木盆地北缘地区石炭系泥岩沉积地球化学特征

详细研究了祁连—柴达木盆地北缘地区石炭系泥岩的微量元素和稀土元素地球化学特征。各微量元素在各剖面及不同层位变化相当复杂 ,但仍有一定规律 ,这种变化与其物源供应和沉积成岩环境有关。各样品稀土总量变化较大 ,以甘肃永昌煤山子剖面总量最高 ;各泥岩样品轻稀土富集 ,Eu负异常 ,δEu介于 0 .4 4～0 .90之间。微量、稀土元素组合及比值的变化 ,显示物源区母岩为花岗岩和玄武岩的混合 ,稀土分布模式显示源岩为粘土岩、花岗岩和中性岩的混合 ,两者示物源一致。元素的丰度及其比值 ,反映当时水介质环境大部分为海相 ,亦有部分为陆相 ,与其它相标志所表征的结果是一致的。     

开远市生态——经济规划研究

开远市生态—经济规划研究总体设计分为三个研究层次，第一层次是总体发展战略研究，采用系统动力学方法进行总体模拟分析，具体研究发展战略、现行政策和未来发展的总体规划方案的趋势分析和比较，并用综合评价法模型优选总体规划方案。第二层次是环境与经济发展研究，采用投入———产出法研究经济发展的投入产出和排污水平、环境与经济调发展的宏观对策，制定实施污染物总量控制的环境综合治理规划。第三层次是研究优势资源的开发利用和生态环境的保护关系，谋求开远市经济与环境协调、稳定和持续发展、实现经济、社会和环境效益的统一。     

Heavy metal contamination of soils and crops from auto traffic,sewage sludge,pig manure and chemical fertilizer

The present paper describes heavy metal contamination of soils and crops resulting from auto traffic, sewage sludge, pig manure and chemical fertilizers, in three separate experiments.The first experiment revealed that although the ADDT (average annual daily traffic) value of the Agricultural Area was lower, higher concentrations of Cu, Cd, Zn, Pb and Mn were obtained in soil when compared with the Commercial-Residential Area. Contaminations of trace metals from various source, e.g., chemical fertilizer, animal manure, night soil and pesticides of the nearby agricultural land were suspected.The second experiment compared the effects of adding a commercial fertilizer and digested sludge which contain substantial amounts of various trace metals to a sandy loam for growing Chinese radish. The results indicated that repeated applications of the fertilizer elevated the contents of various trace metals in the roots of Chinese radish. The phenomenon was further aggravated when digested sludge was also incorporated.The third experiment compared the contents of trace metals in the root and leaf tissues of tree seedlings (Acacia confusa) added with a single dose of the trace metalenriched fertilizer, and different portions of pig manure compost. It was revealed that the fertilizer-treated tree seedlings had a higher content of trace metals in the tissues than those amended with manure compost. Although the metal contents of soil increased as more manure compost was added, the contents in plant tissues did not increase correspondingly.