Path Analysis between Diame ter at Breast Height, Hegi ht an d Crown Width of Cunnin ghamia lanceolata in Dif-ferent Age
We studied growth law of crown in different ages, and impact degree between diameter at breast height ( DBH) , tree height and crown by path analysis.Crown width grew mainly from immature to near-mature, and the figure was in 0.3-1.8 m.Crown ratio distributed in 0.3-0.9, and average crown ratio was 0.5.DBH had a significant positive effect to crown with the development of forest stand, and the positive effect was gradually enhanced.Tree height played a positive influence at young forest and over-matures forest.There was a remarkable negative effect between DBH, tree height and crown shape ratio, and the main factor is tree height.The negative effect was minimum in near-mature forest and maximum in mature forest.
Cunninghamia lanceolataDiameter at breast heightTree heightCrown widthPath analysis
NETL
NSTL
万方数据
维普
