%0 Journal Article %A Li-Li TANG %A Mei ZHANG %A Xiang-Lin ZHAO %A Mu-Yi KANG %A Hong-Yan LIU %A Xian-Ming GAO %A Tong YANG %A Pu-Fan ZHENG %A Fu-Chen SHI %T Species distribution and community assembly rules of Juglans mandshurica in North China %D 2019 %R 10.17521/cjpe.2018.0161 %J Chinese Journal of Plant Ecology %P 753-761 %V 43 %N 9 %X

Aims Explore the distribution pattern and the processes controlling the assembly of the Juglans mandshurica dominated forests in North China.
Methods We investigated 84 plots, each with an area of 20 m × 30 m, for the J. mandshurica forests in the North China. We analyzed demography of the J. mandshurica based on its diameters, and applied canonical correspondence analysis (CCA) to explore the relationship between environment and species composition of different formations of the J. mandshurica forests. We then calculated phylogenetic index, i.e., net relatedness index (NRI) and nearest taxonomic index (NTI) and Gaussian Kernel Density Estimation (Gaussian KDE), for each plot to explore the rules controlling community assembly of these forests.
Important findings
The population of J. mandshurica is relatively young in the Northern China, with a mean diameters at breast height (DBH) of 5.36 cm. Distribution of J. mandshurica in North China varied significantly with altitude, slope, slope position and human disturbance. Most of the J. mandshurica located at the low part of the massif with lower altitude and less human disturbance. In North China, niche related processes regulated species coexistence of Form. J. mandshurica, with competition controlled the community assembly in Hebei, Shaanxi and Tianjin, while environment filtering dominated in Beijing and Shanxi.

%U https://www.plant-ecology.com/EN/10.17521/cjpe.2018.0161