森林生态系统细根周转规律及影响因素

赵佳宁,梁韵,柳莹,王玉珏,杨倩茹,肖春旺

Patterns and Influence Factors of Fine Root Turnover in Forest Ecosystems

Jianing Zhao,Yun Liang,Ying Liu,Yujue Wang,Qianru Yang,Chunwang Xiao

表3 纬度、年平均温度、年平均降水量、土壤有机碳含量、土壤pH值、土壤容重、土壤阳离子交换量、沙土含量、壤土含量、黏土含量与细根周转率的Pearson相关关系

Table 3 Pearson correlations among latitude, mean annual temperature, mean annual precipitation, soil organic carbon content, soil pH, soil bulk density, CEC, sand fraction, silt fraction, clay fraction, and fine root turnover rate

MAT MAP Soil organic carbon Soil pH Soil bulk density CEC Sand fraction Clay fraction Silt fraction lg (fine root turnover rate) Latitude -0.867** -0.609** -0.164 0.168 0.348** 0.157 0.124 0.097 0.105 -0.367** MAT 0.576** -0.029 -0.009 -0.332** -0.03 -0.211 -0.011 0.361** 0.233* MAP -0.101 -0.094 -0.254* -0.048 -0.167 0.052 0.221 0.240* Soil organic carbon -0.449** 0.14 0.11 0.126 -0.171 0.029 0.254* Soil pH 0.026 0.235 -0.041 0.231 -0.165 -0.297* Soil bulk density -0.464** 0.900** -0.599** -0.852** -0.098 CEC -0.545** 0.376* 0.491** -0.071 Sand fraction -0.823** -0.772** 0.038 Clay fraction 0.284* -0.146 Silt fraction 0.104