Stepwise distinguishing and analysis of major meteorological elements that influenced natural regeneration of Pinus sylvestris var. mongolica on sandy lands

Stepwise distinguishing and analysis were conducted on selected meteorological elements that might influence the natural regeneration through investigation of the status of natural Pinus sylvestris var. mongolica stands on original places and sandy lands of introduced areas. The results indicated that: the dominant meteorological elements that influenced the natural regeneration of Pinus sylvestris var. mongolica on sandy lands were X1(annual average temperature), X6(monthly average rainfall), X13(frost free period). Accordingly, in-depth analysis of dominant elements that hindered the natural regeneration of Pinus sylvestris var. mongolica was carried out, two measures that promoted artificially natural regeneration of Pinus sylvestris var. mongolica on sandy land were put forward.