华北地区胡桃楸林分布规律及群落构建机制分析

唐丽丽,张梅,赵香林,康慕谊,刘鸿雁,高贤明,杨彤,郑璞帆,石福臣

Species distribution and community assembly rules of Juglans mandshurica in North China

TANG Li-Li,ZHANG Mei,ZHAO Xiang-Lin,KANG Mu-Yi,LIU Hong-Yan,GAO Xian-Ming,YANG Tong,ZHENG Pu-Fan,SHI Fu-Chen

表3 5个省市净亲缘关系指数(NRI)、最近亲缘关系指数(NTI)在正负范围内的面积

Table 3 Positive and negative area under curve of the net relatedness index (NRI) and net nearest taxa index (NTI) in five provinces

北京 Beijing 河北 Hebei 山西 Shanxi 陕西 Shaanxi 天津 Tianjin NRI <0 0.72 0.08 - 0.00 0.26 >0 0.28 0.92 - 1.00 0.74 NTI <0 0.86 0.08 - 0.00 0.20 >0 0.13 0.92 - 1.00 0.80