林木干形变化规律的研究王君山.pdf

22 3 Vol22 No3 2 0 0 7 9 HEBEI JOURNAL OF FORESTRY AND ORCHARD RESEARCH S e p. 2007 : 1007- 4961( 2007) 03-0247- 05 林木干形变化规律的研究 1 1 2 1 1 王君山, 张锁成, 黄 婕, 张景兰 , 陈东来 ( 1 , 071000; 2 , 068450) : 450 63 , , , , : ; ; : S 7581 : A Study on the variation patterns of stem- shape of standing trees 1 1 2 1 2 WANG Jun- shan , ZHANG Sou- cheng , HUANG Jie , ZHANG Jing- lan , CHEN Dong- lai ( 1 Agricultural University of H ebei , Baodiong 071000, China ; 2 Forestry Administrition of Mu-L an-Weichang , Weichang 068450, China) A stract: The stem- shape have been stud ed u s ng 150 sampl ng trees of Betula p latyp hyla Suk and 63 sampl ng trees of L arix n the paper and search for chang ng of stem- shape of trees. The results show ed the d fferent of all stem- shape- ndex w th d ameter class. The breast- he ght form f actor and the breast- he ght factor quot ent change small w th chang ng large of d ameter. Key words: stem shape nd x; lar x; Bet ula p latyp hylla Suk , , ( ) , , , , , , , 1 材料与方法 , 19 , , 11 [ 1] [ 2, 4] ( , 1961) , [ 1] [ 5] Sch ffel A 40 ; , 20 3~ 5 [ 1] , , , , , 150 63 , , , 12 , , ( 1) ,