Abstract
The article presents results of microbiological monitoring of artificial soils. These soils were formed in the process of reclaiming technical lignin in special drives of the Baikal Pulp and Paper Mill (Irkutsk region). The test drives are in Solzanskom landfill, which is located between the vil. Solzan and the r. Bol'shaja Osinovka south of Irkutsk Ulan-Ude highway. Investigations were carried out in drives № 1, № 4, № 5, № 6. Soil samples were homogenized in a selected point on three levels. Evaluation of sludge lignin was conducted in accordance with generally accepted sanitary and microbiological methods of investigation of soils, using the integral index of general contamination of the soil. The research shows the role of aerobic and anaerobic microorganisms, bacteria and fungi in microbiocenosis. The degree of contamination of the soil is strong. The ratio of prokaryotic to eukaryotic microorganisms is 3:1 on the average. This suggests a significant role of bacterial forms in lignin biodegradation. The prevalence of the aerobic microorganisms over anaerobic ones shows that in the lower layers of sludge lignin biodegradation process is slow. The materials demonstrate that the methods of microbiological monitoring are proximate and provide a comprehensive assessment of the ecological status of the soil.
Highlights
In the given paper one assumes the upper boundary of the Pliocene to be the upper boundary of the Gelasian Stage
each of which is characterized by landscape and climate change
Landscape transformations took place against a background of progressive climate cooling with an increase in the contrast
Summary
Доктор биологических наук, профессор кафедры микробиологии, вирусологии и иммунологии Иркутский государственный медицинский университет, Иркутск (Россия). В статье приводятся результаты микробиологического мониторинга искусственных почв, которые сформировались в процессе рекультивации шлам-лигнина в картах-накопителях Байкальского целлюлознобумажного комбината (Иркутская область). Оценка шлам-лигнина проведена согласно общепринятым санитарномикробиологическим методам исследования почв, с применением интегрального показателя – ОМЧ/г почвы. Полученные данные показывают, что методы микробиологического мониторинга относятся к экспрессным методам анализа и дают комплексную оценку экологического состояния почвы. Исследования проводились в картах-накопителях шлам-лигнина (No 1, No 4, No 5, No 6) Байкальского целлюлозно-бумажного комбината (Иркутская область). Изучение состояния грунта было произведено согласно общепринятой методике микробиологического исследования почв [17, 18], в том числе с определением микробной обсемененности (ОМЧ/г почвы). В задачи исследования входила характеристика состояния шлам-лигнина в картах накопителях. Оценивая качество грунта в шламонакопителе No 1, по показателю ОМЧ следует охарактеризовать его как сильно загрязненный [9]
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