soc Microbial community 6800 600 蓬400 是200 315.96 R2=0.9255 650 0100200300400 600 土壤动物个体数(条/m2) 500 ◆y=334.03Ln(x)-641.92 R2=0.9745 300 20 soc(g/kg)SOC & Microbial community y = 315.96e0.0021x R 2 = 0.9255 0 200 400 600 800 0 100 200 300 400 土壤动物个体数（条/m2) 微生物量碳（mg/g) y = 334.03Ln(x) - 641.92 R 2 = 0.9745 300 350 400 450 500 550 600 650 1 0 2 0 3 0 4 0 5 0 SOC(g/kg) Microbial C(mg/kg)