| dc.description.abstract | This study aims to determine the effect of draining and rewetting peatlands
at two sampling depths on changes in the physical and chemical properties of post fire peat. This research was conducted in Dusun XIII, Perbangunan Village, Sei
Kepayang District, Asahan, and the Research and Technology Laboratory of the
Faculty of Agriculture, University of North Sumatra. This research was conducted
using a survey method based on the concept of ex-post facto using a Nonfactorial
Randomized Group Design with 4 replications. The treatment factor was the drying
and rewetting of post-burn peatland at two depths consisting of 6 treatments,
namely: unburnt peat in wet condition at a depth of 0-30 cm (G-nb1), unburnt peat
in wet condition at a depth of 30-60 cm (G-nb2), post-burnt peat in dry condition at
a depth of 0-30 cm (G-bk1), post-burnt peat in dry condition at a depth of 30-60 cm
(G-bk2), post-burnt peat in wet condition at a depth of 0-30 cm (G-bb1), and post burnt peat in wet condition at a depth of 30-60 cm (G-bb2). The results showed that
post-fire peat underwent changes in the bulk density and color of the peat. However,
there were no changes in moisture content and degree of decomposition when
compared to unburned peat. In terms of chemical properties, there were changes in
peat pH, peat water pH, peat CEC and Kex. However, no changes were found in ash
content, C-organic, Naex, Caex, Mgex, and base saturation when compared to
unburned peat with unburned peat. | en_US |
