title: Study on the variation in and selection of Fraxinus mandshurica provenances and families in northeast China
abstract: Abstract Fraxinus mandshurica Rupr. is one of the main afforestation species in northeast China, and there is great demand for improved F. mandshurica varieties. The results of an investigation into and analysis of the growth traits of F. mandshurica provenances and families showed that there were significant differences in different periods. However, variations in growth traits decreased year by year. There was a significant negative correlation between tree heights of the provenances and sunsh
journal: Journal of Forestry Research