Wpływ zabiegów agrotechnicznych na niektóre właściwości gleb oraz stan upraw sosnowych na pożarzyskach wielkoobszarowych

Autorzy

• Ireneusz Olejarski Instytut Badawczy Leśnictwa, Zakład Siedliskoznawstwa, Sękocin-Las, 05-090 Raszyn
  e-mail: I.Olejarski@ibles.waw.pl

Abstrakt

Soil conditions (soil chemistry, physical properties, soil microbiological activity) and state of Scots pine regeneration (content of nutrients in the needles, height increment) in different variants of soil preparation were investigated after great forest fires. Fire caused the reduction of carbon and nutrients in the soil and decrease microbiologial activity. The biggest reduction of carbon and nutrients was observed in the method with ploughing, where the remnants of organic substance were removed from the surface. Methods where organic substance had been crushed and mixed with soil improved soil conditions. The improvement the soil conditions lead to increase of nutrients in the needles and to the significant height increment.

Słowa kluczowe

• agrotechnical treatments
• nutrient status
• height increment
• fertilization
• soil conditions
• Forest fire
• Scots pine