广州市14种常用园林树木健康评价

Tree Health Assessment of Fourteen Landscape Tree Species in Guangzhou

园林树木是城市园林绿地的重要组成部分,及时调查与正确评估园林树木健康状况,不仅有助于园林植物景观的可持续发展,更可确保树木不会对居民、设施与财产安全构成威胁。研究采用随机样方法,调查了3类城市园林绿地中园林树木的健康状况,并对应用最多的14种园林树木的健康状况进行了分析。结果表明,大部分植株生长基本健康,秋枫(Bischofia javanica)、木棉(Bombax malabaricum)、垂叶榕(Ficus benjamina)、小叶榕(F.microcarpa)、大花紫薇(Lager-stroemia speciosa)、芒果(Mangifera indica)、人心果(Manilkara zapota)、白千层(Melaleuca leu-cadendron)和乌墨(Syzygium cumini)等9种树木抗性与适应性强,生长基本健康;黄槐(Cassiasurattensis)、黄葛榕(Ficus virens var.sublanceolata)和白兰(Michelia alba)在应用于某类绿地时容易出现健康问题;红花羊蹄甲(Bauhinia blakeana)和阴香(Cinnamomum burmannii)等2种树木存在一定的健康问题,管养应具有针对性;据此提出了园林树木应用及相应的管养建议。

Landscape trees are the important components in urban green lands. Timely investigation and accurate assessment of landscape tree health are helpful not only for the ecological functioning of landscape trees, as well as the sustainable development of ornamental plant landscape in urban green lands, but also useful to ensure that landscape trees will not be a threat to residents, facility and property. Health situations of landscape trees in parks, university campuses and road sides were investigated by using random sampling method. Fourteen commonly used greening tree species were selected to be assessed. The results showed tha most of them were in good growth conditions. Nine species exhibited good resistance and a- daptability and grew well, such as Bischo fia javanica , Bomba：c ceiba , Ficus benjamina , F. microcarpa, Lagerstroemia speciosa , Mangi fera indica , Manilkara zapota , Melaleuca quinquenervia and Syzygium cuminii. Cassia surattensis , Ficus virens var. sublanceolata and Michelia alba were susceptible when they were applied in certain types of green lands. There were some health problems in Bauhinia blakeana and Cinnamomum burmannii, so management and maintenance for them should be carried out by more pertinency. According to tree health analyses, the 14 species were divided into 3 categories and the corresponding preservation suggestions were provided.