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6 鹤山市马尾松次生林对照样地土壤理化性质与土壤有机碳密度的通径系数
Table 6 Path analysis between soil properties and soil organic carbon density in control plots of secondary Pinus massoniana forests in Heshan
变量 Variable X1-Y1 X2-Y1 X3-Y1 X4-Y1 X5-Y1 X6-Y1 X7-Y1 X8-Y1 X9-Y1 X10-Y1
X1 0.148 0.666 0.053 -0.310 0.016 0.027 0.292 0.120 -0.038 0.015
X2 0.139 0.706 0.055 -0.287 0.016 0.025 0.214 0.112 -0.042 0.015
X3 0.099 0.500 0.078 -0.227 0.011 0.018 0.157 0.044 -0.008 0.008
X4 -0.131 -0.579 -0.051 0.349 -0.012 -0.030 -0.288 -0.107 0.031 -0.013
X5 0.137 0.667 0.049 -0.256 0.017 0.023 0.226 0.112 -0.041 0.015
X6 -0.128 -0.568 -0.046 0.336 -0.013 -0.031 -0.281 -0.108 0.033 -0.014
X7 0.120 0.420 0.034 -0.280 0.011 0.024 0.359 0.104 -0.022 0.013
X8 0.135 0.600 0.026 -0.284 0.014 0.025 0.283 0.132 -0.047 0.016
X9 0.106 0.558 0.011 -0.206 0.013 0.019 0.150 0.116 -0.054 0.014
X10 0.136 0.631 0.037 -0.279 0.016 0.025 0.273 0.124 0.045 0.016