algae zone
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The paper fristly compared the fertile soil with the incinerated sterile soil on the number of micro-algae , soil pH value , soil organic matter soil available phosphorus and soil nitrogen.And then, the author put fertile soil, which included micro-algae, proportionally into sterile samples and cultivated them respectively under illumination condition (micro-algae can live and reproduce)and dark condition(micro-algae will die in some time).The above indices were measured in 0, 30, 60 and 90days respectively, The analyse of the interrelation between the change of micro-algae"s number and the changes of soil pH value, soil organic matter, soil available phosphorus and soil nitrogen indicated:Soil micro-algae which were native to fertile soil conld adapt to the changed circumstance and light acted as a decisive role to the distribution of soil micro-algae.Under dark condition,the micro-algae"s number declined gradually and went to zero in the end,while under illumination condition ,on the 90th day, the micro-algaes number of per gramme was 6-7 times more than that of the beginning.
本文首先对肥沃土壤与经高温焚烧后的贫瘠土壤中的微藻数量、土壤pH值、有机质含量、有效磷含量和全氮量进行比较研究,然后将包含微藻的绿化苗圃地肥土按不同比例接种进入贫瘠土样中,分别在光照条件和黑暗条件下进行培养,在0天、30天、60天和90天分别检测以上指标,比较有光条件和无光条件下,即有藻条件和无藻条件下贫瘠土样所发生的变化,并分别对微藻数量的变化与土壤pH值、有机质含量、有效磷含量和全氮量的变化之间做相关性分析,以评估肥沃土壤中的微藻接种进入贫瘠土壤后的生长情况以及对贫瘠土壤的改良作用。
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The low-pressure andalusite sequence metamorphic belt includes biotite zone, garnet zone, staurolite zone, staurolite-andalusite zone, sillimanite zone and cordierite-sillimanite zone. It is calculated that the P-T conditions are 445~550℃, 0.2~0.6GPa for biotite zone, 480~566℃, 0.54± 0.22GPa for the garnet zone, 601±20℃, 0.8±0.25GPa for the staurolite zone, 540±20℃, 0.32± 0.05GPa for the staurolite-andalusite zone, 640℃, 0.43GPa for sillimanite zone, 740~800℃, 0.4~0.7GPa for the cordierite-sillimanite zone.
黑云母带的变质条件估计在445~550℃、压力在0.2~0.6GPa范围变化;石榴石带温度在480~566℃、压力在0.54±0.22GPa的范围;十字石带范围为601±20℃、0.8±0.25GPa;十字石-红柱石带为540±20℃、0.32±0.05GPa,而利632.4℃、0.785GPa,这个值不是红柱石的稳定范围,这可能是其早期中压变质条件;矽线石带的条件640℃、0.43GPa左右,由于其石榴石中有蓝晶石包体,因此其早期也可能有中压条件的变质;堇青石-夕线石带范围大致为740~800℃、0.4~0.7GPa之间。
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The main reasons were that the algae and organism in the water decreased the ability of removing pollutants by coagulations, the algae which grown again in the open sedimentation tank weakened the removal effect of algae by coagulation; because of the accumulation of algae and algae toxin in the filtration tank, the concentration of algae toxin in the effluent increased; by the function of fluid chlorine, the algae and organisms after the filtration will release microalgae toxin and produce a lot of byproduct such as microalgae toxin, sobomyl and so on, meanwhile, the chlorination produce considerable halide and halo-acetic acid and other disinfection byproduct.
主要表现在藻类和溶解性有机物的存在降低了混凝去除污染物的能力;藻类在露天平流沉淀池中再生长,抵消了混凝除藻效果;藻类和藻毒素在滤池中积累,导致滤后藻毒素升高;穿透滤池的藻类和有机物在液氯作用下,释放微囊藻毒素、土臭素和二甲基异冰片等胞内物质,同时生成数量可观的卤代烃和卤乙酸等消毒副产物。
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algae layer;aglae zone:(地衣中的)藻层
"(高层泾原苔层下的)藻类层","algae layer" | "(地衣中的)藻层","algae layer;aglae zone" | "灭藻剂;除藻剂","algicide"