中度强度森林火灾对马尾松次生林土壤有机碳密度的影响

罗斯生, 罗碧珍, 魏书精, 胡海清, 李小川, 吴泽鹏, 王振师, 周宇飞, 钟映霞

Effects of moderate forest fires on soil organic carbon density in secondary forests of Pinus massoniana

LUO Si-Sheng, LUO Bi-Zhen, WEI Shu-Jing, HU Hai-Qing, LI Xiao-Chuan, WU Ze-Peng, WANG Zhen-Shi, ZHOU Yu-Fei, ZHONG Ying-Xia

表7 鹤山市马尾松次生林过火样地土壤理化性质与土壤有机碳密度的通径系数

Table 7 Path analysis between soil properties and soil organic carbon density in burned plots of secondary Pinus massoniana forests in Heshan

变量 Variable X1-Y2 X2-Y2 X3-Y2 X4-Y2 X5-Y2 X6-Y2 X7-Y2 X8-Y2 X9-Y2 X10-Y2 X1 0.118 0.658 0.092 -0.206 0.012 0.006 0.072 0.377 -0.141 0.004 X2 0.111 0.700 0.086 -0.171 0.012 0.005 0.043 0.358 -0.190 0.004 X3 0.104 0.580 0.103 -0.214 0.011 0.005 0.069 0.268 -0.061 0.003 X4 -0.095 -0.467 -0.086 0.256 -0.008 -0.006 -0.083 -0.268 0.032 -0.003 X5 0.104 0.644 0.082 -0.146 0.013 0.004 0.047 0.341 -0.170 0.004 X6 -0.098 -0.534 -0.078 0.237 -0.009 -0.007 -0.069 -0.312 0.099 -0.003 X7 0.080 0.286 0.068 -0.201 0.006 0.004 0.105 0.245 0.032 0.002 X8 0.109 0.617 0.068 -0.169 0.011 0.005 0.064 0.406 -0.184 0.004 X9 0.064 0.513 0.025 -0.032 0.009 0.003 -0.013 0.288 -0.259 0.003 X10 0.095 0.561 0.065 -0.149 0.012 0.005 0.055 0.352 -0.168 0.005