梨树县石岭林场退耕还林效果调查与分析  

Survey and analysis of effects of converting croplands to forest in Shiling Forest Farm of Lishu County,Jilin Province

作　　者：经希天 

机构地区：[1]梨树县石岭林场,吉林四平136505

出　　处：《吉林林业科技》2010年第2期4-6,共3页Journal of Jilin Forestry Science and Technology

摘　　要：以刺槐、樟子松2个树种3种配置方式进行退耕还林造林试验,结果表明:造林树种配置方式对林木生长量有显著影响,刺槐在纯林配置时的生长量优于混交配置,前者的树高、胸径生长量分别是后者的140.2%和129.7%;樟子松混交配置时的生长量要优于纯林配置,前者的树高、胸径生长量分别是后者的119.0%和125.0%。土层厚度对林木生长量有显著影响,刺槐在厚土层立地条件下的树高和胸径生长量分别是薄土层的112.0%和104.0%;樟子松在厚土层立地条件下的树高和胸径生长量分别是薄土层的115.0%和113.0%,林地郁闭度亦提高了1成。A forestation experiment of three collocations on tree species, Robinia pseudoacacia and Pinus sylvestris var. mongolica mixed stand, pure R. pseudoacacia stand, and pure Pinus sylvestris var. mongolica stand, was conducted in the area of converting croplands to forest in Shiling Forest Farm. Result shows that the tree species composition had a significant effect on tree growth. The height and diameter growth of trees in pure R. pseudoacacia stand were 140.2% and 129.7% ,respectively, that of the mixed forest, while the height and diameter growth of trees of P. sylvestris var. mongolica in mixed stand were 119.0% and 125.0% ,respectively,that of trees in the pure stand. The thickness of soil also had significant effect on tree growth. The height and diameter growth of R. pseudoacacia in the site with thicker soil layer were 112.0% and 104.0%, respectively,that of those in the site with thinner soft layer. For P. sylvestris var. mongolica, the height and diameter growth of tree in the site with thicker soil layer were 115.0% and 113.0% that of the site with thinner soil layer.

关 键 词：退耕还林 造林设计 生长调查 

分 类 号：S752.7[农业科学—森林经理学]