中国南北过渡带土壤碳氮空间特征及暖温带与亚热带界限

张俊华, 朱连奇, 李国栋, 赵芳, 秦静婷

Spatial patterns of SOC/TN content and their significance for identifying the boundary between warm temperate and subtropical zones in China's north-south transitional zone

ZHANG Junhua, ZHU Lianqi, LI Guodong, ZHAO Fang, QIN Jingting

表1 土壤性质基本统计特征

Tab. 1 Statistical characteristics of soil properties in the study area

指标 最小值 最大值 平均值 标准差 偏度 峰度 有机碳(g/kg) 0.64 71.40 21.49 18.31 1.00 -0.39 全氮(mg/kg) 110. 00 7710.00 1918.95 1408.34 0.80 -0.78 pH 4.60 8.80 6.30 1.25 0.27 -0.99 土壤颗粒 0.2~2mm 0.00 95.49 18.00 18.26 1.77 4.25 0.02~0.2mm 0.00 74.26 34.13 15.09 -0.44 0.55 0.002~0.02mm 1.20 66.10 30.63 12.42 0.59 0.01 <0.002mm 3.10 52.22 18.70 6.68 0.48 0.67