鄂尔多斯康巴什新区园林绿化树种适宜性评价

Garden Trees Suitability Evaluation of Kangbashi New Zone in Ordos

为正确选择绿化树种,以指导城市绿化,通过对鄂尔多斯康巴什新区不同立地条件下园林绿化树种的长势、树高、冠幅、胸径、新生枝条长度等指标进行详细调查,主要从苗木种源、不同土壤条件出发对康巴什新区园林绿化树种的生长适宜性进行了评价。结果表明:鄂尔多斯康巴什新区绿化的主要树种是油松、樟子松、云杉、国槐、水蜡、金叶莸和金叶榆,常绿乔木中樟子松在不同的立地类型下生长较油松和云杉优越;落叶乔木中国槐在本地区的生长较适合,在各种立地类型下长势均较好;绿化灌木中金叶榆、金叶莸及重瓣榆叶梅的生长状况较好。由于红瑞木耐寒性较差,在越冬时经常遭受冻害。水蜡喜干燥环境,不能频繁浇水,否则会大面积死亡;樟子松、水蜡、国槐、云杉、金叶莸在风沙土条件生长较好,而金叶榆和油松在栗钙土条件下生长较好。

For the sake of selecting garden tree correctly and guiding city greening,though detailed surveying growth index of garden trees on different site condition of Kangbashi new zone, such as growth vigor, tree height, crown width, DBH, new branch length and so on, the growing suitability of garden trees in Kangbashi new zone was evaluated based on tree source and soil conditions. The result showed that Pinus tabulaeformis C., Pinus sylvestnis vat. mongolica L., Picea aspoerata, Sophora japonica, Ligustrum sinense L., Caryopteris clandonensis ,Ulmus pumila cv. jinye,were the main garden trees of Kangbashi new zone in Ordos;in the evergreen arbors, the growing vigor of Pinus sylvestnis vat. mongolica L. was better than that of P inus tabulae f ormis C. and P icea as poerata ;in the deciduous arbors , So phora japonica was more suitable to local site condition than others; in the shrubs, the growing vigor of Ulmus pumila cv. jinye ,Caryopteris clandonensis and Prunus triloba Lindl. vat. plena Dipp were better than others. Because of poor cold tolerance,Cornus alba was subjected to freezing injury in the overwintering period. Ligustrum sinense L. liked dry environment and could not irrigate frequently,or would appear large scale death. Pinus sylvestnis var. mongolica L. , Ligustrum sinense L. , Sophora japonica, Caryopteris clandonensis and Picea asperata Mast grew well in aeolian sandy soil;Ulmus pumila cv. jinye and Pinus tabulaeformis C. grew well in chestnut soil.