A Adaptability Analysis on Far Distance Species Source Introduction of Pinus sylvestris Var mongolica to Arid Desert Climate and Salinization Soil

Seedlings of Pinus sylvestris Var mongolica were introduced to Minqin arid desert from remote semi-arid area, the growth condition matching with local climate and soil ions is researched by grey correlation analysis. It shows that the growth has close relationship with local sunshine hours, average air pressure, evaporation, soil temperature, air humidity and precipitation, are the main factors affecting its growth wind velocity is the second one. Another analysis on seedlings' survival ratio with soil ions shows that soil pH value and HCO 3 - have a big influence on seedlings' survival, and SO 4 2- ?Mg 2+ ?Ca 2+ ?K ++Na + in the soil also have close relation to the seedling life. However, Cl - and total salty content are second factors.