CAJ | 학술논문

于洞庭湖区的岳阳市君山区、沅江市、临澧县、常德市鼎城区，选择2008年春造林的杨树人工林，按平原、滩地、丘陵平地与丘陵坡地4种立地类型设立标准样地，对洞庭湖区不同立地杨树的生长规律进行研究。结果表明：在平原、滩地、丘陵平地、丘陵坡地等4种立地，6年生杨树林的年均树高生长量分别为2.8 m、2.3 m、2.6 m、1.5 m，年均胸径生长量分别为2.6 cm、2.6 cm、2.3 cm、1.9 cm，年均单株材积生长量分别为0.0240 m3、0.0180 m3、0.0180 m3、0.0063 m3，年均单位面积蓄积生长量分别为20.0 m3/hm2、15.5 m3/hm2、15.5 m3/hm2、7.8 m3/hm2；4种立地以平原地的杨树生长最好，并且立地条件越好，杨树进入快速生长期也越早；在平原，6年生杨树的胸径生长已经因林分过密而放缓，但树高、单株材积、单位面积蓄积生长量都还处于快速生长期。
우동정호구적악양시군산구、원강시、림례현、상덕시정성구，선택2008년춘조림적양수인공림，안평원、탄지、구릉평지여구릉파지4충입지류형설립표준양지，대동정호구불동입지양수적생장규률진행연구。결과표명：재평원、탄지、구릉평지、구릉파지등4충입지，6년생양수림적년균수고생장량분별위2.8 m、2.3 m、2.6 m、1.5 m，년균흉경생장량분별위2.6 cm、2.6 cm、2.3 cm、1.9 cm，년균단주재적생장량분별위0.0240 m3、0.0180 m3、0.0180 m3、0.0063 m3，년균단위면적축적생장량분별위20.0 m3/hm2、15.5 m3/hm2、15.5 m3/hm2、7.8 m3/hm2；4충입지이평원지적양수생장최호，병차입지조건월호，양수진입쾌속생장기야월조；재평원，6년생양수적흉경생장이경인림분과밀이방완，단수고、단주재적、단위면적축적생장량도환처우쾌속생장기。
Setting up the sample plots according to the four site types of plain,beach,hilly-flatland and slope land,the growth regularity of poplar in different sites of Dongting Lake areas is researched.The results show that,the annual aver-age height growth of the 6-year-old poplar growing in the plains,beaches,hilly-flatland and slope land are 2.8 m,2.3 m,2.6 m and 1.5 m respectively,the annual average DBH growth are 2.6 cm,2.6 cm,2.3 cm and 1.9 cm respective-ly,the annual average individual volume growth are 0.024 0 m3 ,0.018 0 m3 ,0.018 0 m3 and 0.006 3 m3 respectively, and the annual average volume growth per unit area are 20.0 m3/hm2 ,15.5 m3/hm2 ,15.5 m3/hm2 and 7.8 m3/hm2 respectively.The poplar grow best in the plains of the four kinds of site conditions,and it is the earlier with the better site conditions that poplar enter into a fast-growing period,the DBH growth of the 6-year-old poplar growing in the plains has been slowed by high density,but the growth of tree height,individual volume and volume per unit area are in rapid growth period.