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5 鹤山市马尾松次生林对照样地与过火样地土壤有机碳密度与土壤理化性质、生物量的相关关系

Table 5 Correlation coefficients of soil organic carbon density with soil properties and fine root biomass in controls and burned plots of secondary Pinus massoniana forests in Heshan

样地类型 Plot type 土壤有机碳含量 SOC 土壤全氮 含量 TN 土壤全磷 含量 TP 土壤容重 BD 土壤含水率 Moisture pH C:N C:P N:P 细根生物量 Fine root biomass CK 0.988** 0.953** 0.682** -0.831** 0.949** -0.820** 0.782** 0.899** 0.728** 0.937** Postfire forest 0.989** 0.957** 0.868** -0.726** 0.924** -0.774** 0.628** 0.931** 0.601** 0.832**