After observed Chinese pine's height

trunk diameter

top shoot growth

crown diameter

survival percent when mixed with seabuckthorn by row

by strip

by wide row and wide row cut seabuckthorn and compared them with Chinese pine of only Chinese pine woods in loess hilly and gully region of northern Shaanxi

the results show:Chinese pine's growth of mixed woods has no distinctly difference after planted three years later.When mixed sea buchthorn coverage density achieves at 70%

Chinese pine's growth of mixed woods by row and by wide row become slowly

after being planted six to seven years

a flock of Chinese pine begin to perish

eight years later

all of Chinese pine has deceased. As cut sea buckthorn germinate

Chinese pine of mixed woods by wide row cut sea buckthorn grow faster than that of only Chinese pine woods

after cutting sea buckthorn three years

when germinated seabuckthorn coverage density achieves at 40%~45%

Chinese pine's growth of mixed woods by wide row cut sea buckthorn become distinctly faster than that of only Chinese pine woods.When sea buchthorn intruded the strip of Chinese pine

Chinese pine of mixed woods by strip grow faster than that of only Chinese pine woods

eight years later

when seabuckthorn coverage density achieves at 40%~45%

Chinese pine's growth of mixed wood by strip become distinctly faster than that of only Chinese pine.Annualprecipitation has big influence on Chinese pine growth

but the influence lags one year.