不同雪被处理对川西亚高山森林土壤腐殖质含量的影响

黄雯澜, 刘谣, 简毅, 张琳慧, 陈素, 黄路路, 俞丽云, 李晗, 王丽霞, 谭波, 张丽

Effects of different snow treatments on soil humus content in subalpine forest soils in western Sichuan, China

HUANG Wen-Lan, LIU Yao, JIAN Yi, ZHANG Lin-Hui, CHEN Su, HUANG Lu-Lu, YU Li-Yun, LI Han, WANG Li-Xia, TAN Bo, ZHANG Li

图4 川西亚高山森林土壤腐殖质在雪被融化期(A、B)、雪被形成前期(C、D)分别与理化性质的相关关系。圆形点的大小展示相关系数的大小, 颜色用来表示相关系数的正负, 正方形的色块用来表示相关性检验的p值。E4/E6, 光密度值; FA, 富里酸含量; FTC, 冻融循环次数; HA, 胡敏酸含量; HA/FA, 胡敏酸/富里酸; HS, 可提取腐殖质含量; PQ, 胡敏酸/可提取腐殖质; SOC, 土壤有机碳含量; SWC, 土壤含水率; Tm, 温度; TN, 全氮含量; TP, 全磷含量; Δlog K, 色调系数。

Fig. 4 Soil humus was correlated with physical and chemical properties during the snow melting period (A, B) and early snow formation period (C, D) in subalpine forests in western Sichuan. The size of the circular dot is used to show the strength of the correlation, color is used to represent the positive and negative correlation coefficients, and the color block of the square is used to represent the p-value of the correlation test. E4/E6, optical density value; FA, fulvic acid content; FTC, freeze-thaw cycle; HA, humic acid content; HA/FA, humic acid /fulvic acid; HS, extractable humic substance content; PQ, humic acid/extractable humic substance; SOC, soil organic carbon content; SWC, soil water content; Tm, temperature; TN, total nitrogen content; TP, total phosphorus content; Δlog K, hue coefficient.