Soils/land Biochar amendment SOC change (%) DOC (%) Reference
Acidic acrisol 10% (wt/wt) +2775% (Smebye et al., 2016)
Arable soil 30%(wt/wt) +100%~+127% (Steinbeiss et al., 2009)
Paddy field 10 t/ha -40(t/ha) +10.8%~+55.6% (Zhang, A. et al., 2012)
Sugarcane field 0.68%-1.04% (wt/wt) +54% -11.8% (Yin et al., 2014)
Arable field 24-72(t/ha) +153% -9.75% (Prommer et al., 2014)
Rice field 1.78-29.6 (t/ha) +63%~+65% (Sui et al., 2016)
Soil without types 2%-5% (wt/wt) -1.31%~+31.1% (Zhao et al., 2015)
Coastal saline soil 0.5%-2.0%(wt/wt) +5.2%~+68% (Novak et al., 2009)
Agriculture field 15.75~47.25(t/ha) +27.08%~+92.61% -5.59%~-26.67% (Yang et al., 2018)
Rice field 1~10(t/ha) +43.8%~+169% (Munda et al., 2018)
Coastal saline soil 0.5%~2% -3.83%~+187% (Sun et al., 2016)
Costal saline soil 3.2~32(t/ha) +31%~+298% (Lin et al., 2015)
Saline soil 0.5%~10% (wt/wt) +1.16%~+12.8% +0%~+66.7% The present work