【摘要】 本文总结了北京市西山试验林场三十年来的造林经验。普遍调查了二十多个造林树种在各种立地条件下的生长情况,在此基础上,运用数理统计方法分折了各树种的生长与各立地因子之间的相互关系。以此为依据修改了西山林场的立地条件类型表,提出了新的方案,并为各立地类型组提出了适用造林树种的建议。更多还原

【Abstract】 A summary of 30-year’s experimence of afforestation in Xishan Ex-perimental Forest, Beijing. Data of growth of more than 20 tree species,planted under various site condtions in this region were collected and analysed.From these data correlation between tree growth and various site factors werecalculated with mathematical-statistical methods.Based on these results,the oldtable of site types having been adopted by members of this Forest was modifiedand a new one was made which recommends more suitable species with eachgroup of site types in local planting.更多还原