| 梨树县石岭林场退耕还林效果调查与分析 |
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| 引用本文： | 经希天.梨树县石岭林场退耕还林效果调查与分析[J].吉林林业科技,2010,39(2):4-6. |
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| 作者姓名： | 经希天 |
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| 作者单位： | 梨树县石岭林场,吉林四平,136505 |
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| 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。
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| 关 键 词： | 退耕还林 造林设计 生长调查 |
Survey and analysis of effects of converting croplands to forest in Shiling Forest Farm of Lishu County,Jilin Province |
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| JING Xi-tian.Survey and analysis of effects of converting croplands to forest in Shiling Forest Farm of Lishu County,Jilin Province[J].Jilin Forestry Scicnce and Technology,2010,39(2):4-6. |
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| Authors: | JING Xi-tian |
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| Institution: | Shiling Forest Farm of Lishu County;Siping 136505;China |
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| Abstract: | 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... |
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| Keywords: | converting croplands to forest aforestatin design growth investigation |
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