首页|THE INFLUENCEN OF STAND STATE ON THE OCCURRENCE OF DENDROLIMUS SUPERANS (BUTLER) IN DAXING'AN MOUNTAINS
THE INFLUENCEN OF STAND STATE ON THE OCCURRENCE OF DENDROLIMUS SUPERANS (BUTLER) IN DAXING'AN MOUNTAINS
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
Dendrolimus superuns (Butler) occurred in the vast areas of Daxing'an Mountains forest, in Heilongjiang Province, in 1990. Stands damaged by D. superans seriously, intermediately and lightly show patch shape distribution within damaged area. By ordination analysis and correlation analysis between ordination factors and coordinate axis. It was found that occurrence of D. Superans in different extent is owing to the effect of forest age. composition and exposure. The tended young pure forests grown onthe sunward slopes are most seriously damaged and non-tended middle-age mixing stands grown on the sunless slopes are most lightly damaged. Therefore, in order to prevent D. superans from seriously damaging larch forests, relatively large crown density (P>0. 7) should be kept. and broad leaf trees should be also property preserved.
NETL
NSTL
