Comparison of the annual cycle of sulphur content in spruce needles from heavily polluted and less polluted areas
1995
Simoncic, P. | Kalan, P. (Forestry Inst. of Slovenia, Ljubljana (Slovenia))
Needles of 20 years old spruces from Prednji vrh, in the area affected by the Sostanj power station, and from Pokljuka (Alps region, with a relatively unpolluted environment), were analysed for total sulphur content (St). Measurements were taken in a period between April and August twice monthly and in the period from August to April every four weeks (May 1993 - June 1994). Sulphur content in one and two years old spruce needles from Prednji vrh were much higher (one year old needles 2.06-2.50 mg/g needle dry weight, 1993) than in needle samples from Pokljuka (one year old needles 1.05-1.25 mg/g needle dry weight, 1993).
Показать больше [+] Меньше [-]