摘要 : Home gardens (HGs) in North-East India are the oldest form of land use practice next to shifting cultivation. Every garden is a unique entity in terms of component arrangement, organization and management, and it reflects the pers... 展开 Home gardens (HGs) in North-East India are the oldest form of land use practice next to shifting cultivation. Every garden is a unique entity in terms of component arrangement, organization and management, and it reflects the personal preferences of the owner, keeping in mind the suitability and site quality of the area. This study was initiated to determine the species diversity of home gardens in North-East India and also to assess the association of tree species with different site quality parameters (elevation, slope, aspect, rainfall, temperature, home garden type and age). A total of 300 home gardens were selected randomly from 11 districts of North-East India. Hill numbers were used to analyse sample completeness, size-based diversity and coverage-based diversity. Canonical correspondence analysis, Pearson's correlation, stepwise multiple linear regression, Poisson log-linear model and linear mixed effect model were performed to study the interactions between species diversity and site quality. In total, 137 species belonging to 102 genera and 46 families were recorded from the 300 home gardens. Fabaceae was the dominant family, and Parkia timoriana (DC.) Merr. (IVI = 20.12) was the dominant species. Abundance of Artocarpus heterophyllus Lam. and Mangifera indica L had no bearing with the environmental variables and therefore are considered potential species for restoration of degraded HGs. Number of species in the HGs was best reflected by the interaction of HG type and temperature, while the model best fitted for stem density and basal area was with HG type and HG age, respectively. 收起