Estimation of the content of nitrogen and phosphorus in the Scots pine needles, growing under various edaphic conditions of the coal dump

The paper presents research data on the nitrogen and phosphorus content in the Scots pine needles, which grows under various edaphic conditions of the dump of the Kedrovsky coal pit, located 25 km north of Kemerovo. The objects of the study were Scots pine trees 10-15 and 20-25 years old. The observation sites were laid on the planned dump with the application of a potentially fertile layer - PFL, in the inter-dump cavity and on the planned dump without applying the PFL. The studies were conducted according to generally accepted methods. The aim of the study was to evaluate the accumulation of nitrogen and phosphorus in the Scots pine needles, which grows under various edaphic conditions of the dump of Kedrovsky coal pit. It was established that pine needles of the II class of age accumulate nitrogen and phosphorus to a greater extent. Studies have shown that, despite the application of PFL, in the pine needles ordinary nitrogen and phosphorus are more in the area of reclamation, in which this procedure was not carried out. The scientific significance of our research lies in the fact that during the reclamation of coal dumps, using Scots pine for landscaping, the expensive procedure for applying PFL can be excluded.