Publications

Scientific publications

Карпечко Ю.В., Лозовик П.А., Федорец Н.Г.
Баланс химических элементов в сосняке и ельнике Карелии
// Лесоведение. № 2. 2018. C. 107-118
Karpechko Yu.V., Lozovik P.A., Fedorets N.G. Balance of Сhemical Elements in Pine and Spruce Forests of Karelia // Russian Forest Sciences. No 2. 2018. Pp. 107-118
Keywords: balance of chemical elements, precipitation, evaporation, lysimeter, blueberry pine forests, blueberry spruce forests
We propose the chemical balance equation for assessment of changes in chemical elements concentrations in soil under the growing tree. Sources of elements for forest soils included measured concentrations in atmospheric precipitation and estimated inputs of litter. Sinks of elements was assessed from lysimetric monitoring data and estimated accumulation by growing phytomass. Because studies are sparse on the effect of transpiration on migration of elements, we made both assumptions, considering it negligible and estimating losses from biogenic evaporation. Growth increment and dieback mass were estimated differentially for ground cover and the stand. We documented the specie-averaged unit concentrations of certain chemical elements, accumulated by growing phytomass and returning with dieback in pine and spruce stands and their ground covers. Flux of elements to ground cover grows in the gradient of precipitation falling through forest canopy. Calcium and potassium concentrations had the highest rise. Their contribution is highest in precipitation flux of all the elements under study. However, precipitation of potassium was comparable to its uptake to phytomass. Dieback was the dominant source of silicon, nitrogen and total phosphorus for soils. The balance model showed that mature and old-growth stands support accumulation of nutritional elements in soils. Losses of silicon could be compensated with its soil storage.
Indexed at Scopus, RSCI, RSCI (WS)
Last modified: April 17, 2018