Изменение параметров фотосинтетического аппарата берез при возобновлении на золоотвалах тепловых электростанций

Abstract

Leaf parameters of Betula pendula Roth and B. pubescens Ehrh. (leaf area, leaf shape coefficient, thickness and LMA) were studied in natural phytocoenosises at ashes of power stations, located in different forest zones. It was shown that in two birch species leaf thickness was largely determined by the edaphic conditions of growth and was higher at the ashes. Leaf area and leaf shape coefficient were species specific and did not vary under the influence of environmental factors. The LMA varying was influenced by the geographical location of the ashes. It was concluded that shifts in leaf thickness reflects the adaptive response of B. pendula and B. pubescens to the growth on the ash substrates.