Silviculture and Cinegetics Review - Societatea Progresul Silvic

FORESTRY BELTS SILVICULTURE AND CINEGETICS REVIEW XVII/30/2012
- Level at the lower threshold of the optimum
magnesium interval (below PT: 2500 ppm): 1090
ppm;
- Average nitrogen pollution (as PT: 17000 ppm):
16240 ppm;
- High calcium pollution (PT: 8000 ppm): 11972 ppm.
Photo 7. Spruce (between houses -- str. Baciului nr. 8, Stupini
– Braşov) where needles were collected for foliar analysis
In March 2010, foliar analyzes conducted at the
spruce trees located near the northern ground wave
(Photo 7) (nearby Stupini belt - Brasov), indicates the
following levels of substances (Table 2):
- Sodium below the threshold of toxicity (PT 200
ppm): 136 ppm;
- Zinc below the threshold of toxicity (PT 60 ppm):
42.9 ppm;
Fig. 8 Lempes Hill saw of the ground wave (west slope)
- Copper (pollution) little above the toxicity threshold
(PT 10 ppm): 10.7 ppm;
- Iron below toxicity threshold (PT 300 ppm): 232.8
ppm;
- Magnesium at the lower limit of the optimum level
(optimum level: 1000-2500 ppm): 1034 ppm;
- Very large excess of calcium (8000 ppm PT): 14,470
ppm.
Tabelul 2. Foliar analysis of spruce from the neighborhood of Kronospan Braşov factory (March 2010)
Metal
Quantity
Optimum level /
Range of tolerance
Toxicity
threshold
MU Type of substance Level characterization
Sodium 136 50-200 200 ppm nutrient/pollutant
optimum / tolerance
interval
Zinc 42.91 15-60 60 ppm nutrient/pollutant
optimum / tolerance
interval
Iron 232.8 40-300 300 ppm nutrient/pollutant
optimum / tolerance
interval
Manganese 10.3 50-500 500 ppm nutrient/pollutant deficiency
Potassium
5037 ppm nutrient/pollutant
optimum / tolerance
interval
Cadmium 0 - 0,5 ppm pollutant absence
Lead 0 - 10 ppm pollutant absence
Magnesium 1034 1000-2500 2500 ppm nutrient/pollutant (deficiency) optimum
Calcium 14470 3500-8000 8000 ppm nutrient/pollutant excess
Copper 10.67 4-10 10 ppm nutrient/pollutant excess
6. Vegetation in the area
6.1. The reserve Castle Hill-Lempes (Photo 8)
The vegetation includes various xerophyte
associations, steppe (the southern slopes on limestone
bedrock), formed in postglaciar, and nemoral
associations - different species forests (sessile oak,
field maple, lime, hornbeam, field maple, beech, fir,
hornbeam, plantations of black pine, with
undergrowth of flowering ash, hawthorn, spindle-tree
, warty spindle-tree, red dogwood, cornel tree, privet,
walnut, ash, blackthorn, dwarf almond, etc.). Of the
shrub vegetation it is noted the rare dwarf almond
species (Mygdalus nana) and wild dwarf cherry
(ground cherry, Cerasus / Prunus fruticosa).
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