【摘要】 分析了甘肃临夏、永靖、皋兰，青海西宁，宁夏西吉，陕西吴旗、榆林，山西河曲等８个种源河北杨人工林的林分结构和生长效果的差异。以现实林分蓄积量为基础，结合试验区技术经济指标，用动态分析方法进行了经济效果评价。结果表明：在甘肃河西中部地区引种陕西吴旗等８个种源是可行的；在相同立地条件下，８个种源林分生产力差异显著，其中青海种源生产力最高，河曲种源最低；优（青海）劣（河曲）种源间、树高、胸径、蓄积量分别相差８．８％、２８．０％、７６．１％，经济效益、净现值、内部收益率等均有明显差异更多还原

【Abstract】 The differences in stand structures and growth effects of the artificial forests of Populus hepeiensis were analysed comparatively from eight provenances,i.e.,Linxia,Yongjing and Gaolan,Gansu Province;Xining Qinghai Province;Xiji, Ningxia Hui Autonomous Region;Wuqi,Yulin,Shaanxi Province;Hequ,Shanxi Province.Based on the present stand growing stock volume,combining the technical and economic targets in the areas studied,the economic effects were evaluated by a dynamic analysis method.The results have shown that the introduction of the species from eight provenances into Hexi region,Gansu Province is feasible.The stand productivities of the species are quite different under same site conditions,e.g., the species from Xining provenance is the highest one,and from Hequ,the lowest. The differences between the highest and the lowest in height,DBH and growing stock volume are 8.8%,28.0% and 76.1% respectively,in economic benefits and net present value are quite different.更多还原