ESTIMASI CADANGAN KARBON PADA TANAH BEKAS TAMBANG EMAS DI KABUPATEN DHARMASRAYA, SUMATERA BARAT

Climate change, deforestation, and substantial loss of agricultural land within gold mining concessions in Dharmasraya greatly affect soil carbon stocks (Cs). This study used a survey method with purposive random sampling based on variations ex-gold areas each region, at depths 0-20 20-40 cm three to five replicates total 54 samples. The estimation Cs was highest depth (5.89E2), compared (1.38E2), where bulk density (BD), organic (SOC), Hg were 1.46 1.39 g cm-3; 0.03 0.05%; 4.11 4.25 mg kg-1, respectively. is very significant by BD (r=-0.522** or Cs=-628.03(BD)+1055.1; R²=0.275) SOC (r=0.948** Cs=4896.8(SOC)-6.4673; R²=0.8996) (r=0.518** Cs=81.373(Hg)-196.43; R²=0.2688). However, cm, it (r=0.836** Cs=16666(SOC)-196.03; R²=0.699).