摘要
通过2003年干旱对1～3年生杉木幼林生长影响的研究,结果表明,2003年的杉木造林成活率、1～3年生杉木地径和树高当年生长量显著低于降水量正常的年份(2000～2002年)。干旱期间1年生杉木林平均造林成活率为81 5%,下降11 5%,平均地径当年生长量为0 70cm,下降54 3%,平均树高当年生长量为0 53m,下降36 4%;2年生杉木林地径和树高当年生长量分别下降38 8%和34 2%,3年生杉木林地径和树高当年生长量分别下降36 0%和43 1%。
The effects of drought in 2003 on the growth of 1-to 3-year-old Chinese fir (Cunninghamia lanceolata) were investigated.The results showed that survival rate of 1-year-old Chinese fir plantation,current annual increment of ground diameter and tree height of 1-to 3-year-old Chinese fir plantations in 2003 were significantly lower than those in the year 2000-2002 with normal precipitation.During the drought,average survival rate of the 1-year-old Chinese fir plantations was 81.5%,decreased by 11.5%,current annual increment of ground diameter was 0.70 cm,decreased by 54.3%,and current annual increment of tree height was 0.53 m,decreased by 36.4%.Current annual increment of ground diameter and tree height of the 2-year-old Chinese fir plantations decreased by 38.8% and 34.2%,respectively,and by 36.0% and 43.1%,respectively,for the 3-year-old plantations.
出处
《福建林业科技》
2004年第3期31-34,49,共5页
Journal of Fujian Forestry Science and Technology
关键词
2003年
干旱
杉木
生长
幼林
Cunninghamia lanceolata
young plantation
drought
growth
