Effect of forest liming in the Western Krušné hory Mts.

Abstract

ABSTRACT:In May 31, 2000, the Government of the Czech Republic, has adopted the Decision No. 532, assigning the minister of agriculture to realize liming and fertilizing in the Krušné hory Mts. and Orlické hory Mts. Based on the decision, in 2000-2003, liming of forest stands was done, at the area of 34,000 ha. Changes of soil and leaf chemistry two years after liming were studied in the Western Krušné hory Mts., Forest administration Horní Blatná. Slight pH increase layer was stated both in the humus layer, and in upper horizons of mineral soil. Increased contents of calcium and magnesium, same as nitrogen and potassium were also recorded. Content of basic cations, mainly of magnesium and calcium, in the sorption complex was increased, aluminium content was decreased. C/N ratio in the humus layer did not change, ratio of basic cations and aluminium in the humus layer was increased significantly. Analyses of the assimilation organs of spruce have proved increase of magnesium and calcium content. The increase was higher in the stands of originally lower values of these elements. While before liming, in about a half of the samples of second needle year class, magnesium was under the deficiency level, two years after liming no deficient values were recorded.

Changes in the air pollution load in the Jizera Mts.: effects on the health status and mineral nutrition of the young Norway spruce stands

“…than in any other northern mountains, e.g. in the Ore Mts., where the concentrations of phosphorus in needles have been increasing due to liming (Lomský 2006;Š rámek et al 2006). The available phosphorus concentration in the upper humus layer and the mineral soil ranged from 5-68 to 5-63 mg kg -1 , respectively.…”

Initial Fertilization Impact on Norway Spruce Nutrition and Growth in the Krušné Hory Mts.

“…At higher altitudes, there was also applied fertilization to remove a Norway spruce yellowing, a specific type of damage, commonly referred to as "new type of forest decline". Its effectiveness had been confirmed by many experiments carried out in recent decades in the entire Central Europe such as in Austria (Jandl et al, 2001;Katzensteiner et al, 1992), in the Czech Republic (Lomský et al, 2006;Šrámek et al, 2006) or in France (Huber et al, 2006;Schaaf and Huttl, 2006).…”

The health and nutritional status of Norway spruce stands in the Krušné hory Mts. 15 years subsequent to the extreme winter of 1995/96

“…In 1996, on 7 of the plots, magnesium concentrations were below the deficiency limit (700 mg·kg cy -current year needles, 1y -one-year-old needles, ns -not significant, *significant at α < 0.1, **significant at α < 0.05, ***significant at α < 0.01,  indicates increase,  indicates decrease The highest concentrations were found in the central area of the mountains. The increase in magnesium content is most probably connected with the liming that was carried out in the eastern part of the Krušné hory Mrs., starting in 2000 (Podrázský et al 2003;Šrámek et al 2006, 2008b.…”

“…The yellowing of the stands in all age categories was connected with a base cation deficiencyprimarily of magnesium and of calcium -in the forest soil and in the needles. This type of damage affected about 8,000 ha of forest stands Lomský, Šrámek 2004 Podrázský 2006;Šrámek et al 2006). The ameliorative methods including biological and chemical amelioration and reduced air pollution pressure have contributed to stand regeneration and enabled the transformation of existing transitory stands into stands composed of the target tree species (Slodičák et al 2008;Šrámek et al 2008b).…”