华北地区胡桃楸林分布规律及群落构建机制分析
唐丽丽1,张梅1,赵香林1,康慕谊2,3,刘鸿雁4,高贤明5,杨彤1,郑璞帆1,石福臣1,*(
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Species distribution and community assembly rules of Juglans mandshurica in North China
TANG Li-Li1,ZHANG Mei1,ZHAO Xiang-Lin1,KANG Mu-Yi2,3,LIU Hong-Yan4,GAO Xian-Ming5,YANG Tong1,ZHENG Pu-Fan1,SHI Fu-Chen1,*()
)
图3. 华北地区胡桃楸分布与环境因子典范对应分析(CCA)的二维排序图。Ele, 海拔; Asp, 坡向; Slo, 坡度; Slp, 坡位; Dis, 人为干扰。´, 北京; °, 天津; ·, 河北; 
, 河南; +, 山西; -, 陕西。
Fig. 3. Two-dimensional ordination diagram of canonical correspondence analysis (CCA) between distribution of Juglans mandshurica and environmental factors in North China. Ele, elevation; Asp, aspect; Slo, slope; Slp, slop position; Dis, disturbance. ´, Beijing; °, Tianjin; ·, Hebei; 
, Henan; +, Shanxi; -, Shaanxi.
