Влияние биогенных элементов на фитоэкстракцию кадмия из загрязненной почвы

The influence of substances containing biogenic elements (potassium chloride, sodium phosphate, ammonium nitrate, potassium and urea nitrate) on phytoextraction degree of cadmium from soil by cultivated oat (Avena sativa L.), cutting lettuce (Lactuca sativa L.) and charlock (Sinapis arvensis L.) has been investigated. As the results of experiment the factors used for estimation of relationship between the environment and a physiological role of a chemical element, and also for revealing of its share in biotic turnover and of a role of organisms-indicators and organisms-concentrators have been calculated: phytotoxic effect and factor of biological absorbing of cadmium by plants. It is shown that potassium nitrate promote the extraction of cadmium from soil in a greater degree in comparison with other substances containing biogenic elements.Исследовано влияние веществ , содержащих биогенные элементы ( хлорида калия , фосфата натрия , нитрата аммония , нитрата калия и мочевины ) на степень фитоэкстракции кадмия из почвы овсом посевным (Avena sativa L.), салатом листовым (Lactuca sativa L.) и горчицей полевой (Sinapis arvensis L.). По результатам эксперимента рассчитаны показатели, использующиеся для оценки связи среды и физиологической роли химического элемента, а также для выявления его участия в биотическом круговороте, роли организмов-индикаторов и организмов-концентраторов: фитотоксический эффект и коэффициент биологического поглощения кадмия растениями. Показано, что нитрат калия в большей степени, по сравнению с другими веществами, содержащими биогенные элементы, способствует извлечению кадмия из почвы

Уровень антропогенного воздействия на экосистемы как функция свойств растительных сообществ.

The approach of estimation of a level of anthropogenic impact on ecosystems as a function of properties of plant associations has been proposed. In the course of investigation it was established that it is possible to estimate the growth degree of anthropogenic impact on ecosystem by: the increase part of a ruderal vegetation in common composition of plant associations; the increase amount of a ruderal vegetation growing on one square meter of soil surface (thickness of sowing); the increase of lead and cadmium content in above ground part of the plants. The sufficiently high ability of lead extraction from soil by such plants-accumulators as great nettle and meadow fescue has been establishedПреложен подход к оценке уровня антропогенного воздействия на экосистемы в качестве функции свойств растительных сообществ. В ходе исследования установлено, что об увеличении степени антропогенного воздействия на экосистему можно судить по: увеличению доли рудеральных видов растений в общем составе растительного сообщества; увеличению количества рудеральных растений, произрастаю-щих на одном квадратном метре поверхности (густота стояния); увеличению содержания свинца и кадмия в наземной части растений. Установлена достаточно высокая способность извлечения свинца из почвы такими растениями-аккумуляторами, как крапива двудомная и овсяница луговая

Influence of biogenic elements on cadmium phytoextraction from polluted soil

The influence of substances containing biogenic elements (potassium chloride, sodium phosphate, ammonium nitrate, potassium and urea nitrate) on phytoextraction degree of cadmium from soil by cultivated oat (Avena sativa L.), cutting lettuce (Lactuca sativa L.) and charlock (Sinapis arvensis L.) has been investigated. As the results of experiment the factors used for estimation of relationship between the environment and a physiological role of a chemical element, and also for revealing of its share in biotic turnover and of a role of organisms-indicators and organisms-concentrators have been calculated: phytotoxic effect and factor of biological absorbing of cadmium by plants. It is shown that potassium nitrate promote the extraction of cadmium from soil in a greater degree in comparison with other substances containing biogenic elements

The Level Of Anthropogenic Impact On Ecosystems As A Function Of Properties Of Plant Associations

The approach of estimation of a level of anthropogenic impact on ecosystems as a function of properties of plant associations has been proposed. In the course of investigation it was established that it is possible to estimate the growth degree of anthropogenic impact on ecosystem by: the increase part of a ruderal vegetation in common composition of plant associations; the increase amount of a ruderal vegetation growing on one square meter of soil surface (thickness of sowing); the increase of lead and cadmium content in above ground part of the plants. The sufficiently high ability of lead extraction from soil by such plants-accumulators as great nettle and meadow fescue has been establishe