Open AccessAcidity and chemical characteristics of direct precipitation under forest cover in the winter-phenophase
Author(s) -
M. Van Miegroet,
V. K. Dua
Publication year - 1984
Publication title -
sylva gandavensis
Language(s) - English
Resource type - Journals
ISSN - 0587-1476
DOI - 10.21825/sg.v50i0.960
Subject(s) - scots pine , beech , canopy , environmental science , precipitation , tree canopy , forest cover , rainwater harvesting , atmospheric sciences , hydrology (agriculture) , forestry , ecology , pinus <genus> , botany , geography , biology , meteorology , geology , geotechnical engineering
From November 1983 to March 1984,samples of direct rainfall were collected at 5 locations and for a total of 12 different situations (urban zone, free field, under forest canopy ) in East-Flanders/Belgium. The overall mean pH values of rainwater collected under a forest canopy are lower than in the adjacent free field. The highest pH values are measured in urban zones. The lowest pH values are found under beech and Scots pine, whereas pH under ash, alder, oak and in the free field are greatly comparable. Important variations in time, following the same pattern in all cases, exist, proving the importance of external influences. The chemical analyses of the rainwater also indicates important variations and differences. The highest concentration of S04, Na, K, Ca and Mg, is found in water collected under forest canopy. Maximal values are typical for stands of Scots pine. More research is needed to explain this phenomenon.