Influence of Mid-Field Afforestation on the Changes of Organic Nitrogen Compounds in Ground Water and Soil
Szajdak L., Zyczynska-Baloniak I.
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Research Center for Agricultural and Forest Environment, Polish Academy of Sciences, Bukowska 19, 60-809 Poznan, Poland
Pol. J. Environ. Stud. 2002;11(1):91-95
Different forms of nitrogen (total, organic, amino acids in dry mass and in humic acids) as well as humus substances, dry mass, activity of urease in ground water and in soils under mild-field deciduous afforestation were measured. Experiments were carried out during an entire year. Afforestation decreased total organic substances in ground waters, as well as total nitrogen and free and bound amino acids to humic acids. In soil under afforestation the decrease of pH, activity of urease, and the content of amino acids in humic acids was observed.
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