摘要
在大量调查研究的基础上,采用数量化理论I的方法 ,对影响朝阳半干旱地区人工采伐带内油松天然更新的因子进行了分析。结果表明,影响采伐带内油松天然更新幼树数量的主导因子顺序为 :采伐带宽度>坡向>坡位>采伐带中的部位 ,影响采伐带内油松更新幼树生长的因子顺序因树龄的不同而有所差别。对影响采伐带内油松的天然更新的主导因子进行了分析 ,结果表明 ,采用等带间隔采伐是一种利于天然更新的方法 ,人工采伐带的宽度以10m左右为宜 ,在立地条件好的地区可以适当加宽 ,但最好在20m以内。
The factor which affect natural regeneration of Chinese pine in Chaoyang semiarid region were discussed by employing the method of quantification depending on mass investigations and studies. The results showed the follows.(1)The sequence of the dominant factors which affecting the number of cutting belt was, width of cutting belt>direction of slope>slope site >position in cutting belt.(2)The sequence of dominant factors affecting the growth of sapling was different according to the age of the sapling. And analysis the dominant factors which affecting natural regeneration of Chinese pine in cutting belt in detail. The result indicated that intermediet cutting for equal space was an effective measure to promote natural regeneration of Chinese pine. 10 m was the best width of cutting width. The width could be increased if the condition of the soil was better. But it would be under 20m.
出处
《沈阳农业大学学报》
CAS
CSCD
2003年第1期35-39,共5页
Journal of Shenyang Agricultural University
