Abstract:
The land fires caused changes in the structure and composition of the soil is like nutrient that
effected growth of the plant around it. To know how far the effect of land fire with different
frequency, the research about the content of macronutrients such as Sodium (Na), heavy metal
cadmium (Cd) and maturity level of peat in area Pakning Asal, Bengkalis Regency needs to be
done. The content of cadmium and sodium were determined by using Atomic Absorption
Spectrophotometer and Flame Photometer, and analysis of maturity level of peat was determined
by Sieve method. The results showed that the Na content was available and total in the unburnt and
once burned soil increased and decreased on the soil several times burned from 26,716; 34,116;
25,162 mg/Kg for available and 49,384; 78,578; 29.763 mg/Kg for total. Cd content was available
and total on unburnt and once burned soil decreases and increases in soil several times burns was
9,454; 8,666; 9,403 mg/Kg to be available and 9,625; 9,602; 9,962 mg/Kg for total. The maturity
level of peat it has a fiber count of >75%.
