The High Input of Soil Organic Matter from Dead Tree Fine Roots into the Forest Soil
Table 2
The distribution of live and dead amounts of tree fine roots (<1 mm in diameter), live/dead ratios, and dead (%) at different depths (H = humus; M = mineral soil) at the forest sites: Forsmark-1 (Coniferous, Calluna Empetrum type), Forsmark-2 (Coniferous fern type) and Forsmark-3 (Alnus swamp herb type) and Laxemar-1 (herb-rich oak forest), Laxemar-2 (Coniferous Vaccinium myrtillus type), and Laxemar-3 (Alnus shore forest type) forest sites. The live/dead ratio is calculated from the mean amounts of live and dead tree fine roots. Estimates are given as mean values ±SD (n = 31-32).