惠州市惠城区生态景观林带树种早期生长表现与评价

Early Growth Performance and Assessment of Trees of Eco-landscape Forest Belt in Huicheng District,Huizhou City

以广东省惠州市惠城区内3号和10号生态景观林带为研究对象,通过小班调查5个样点内不同树种配置模式的树木早期生长表现,结果表明,惠城区生态景观林带5个样点的树木成活率均值为87.8%,树高与胸径均值分别为2.6 m和7.5 cm,早期生长情况总体较好;综合评价结果表明,5个样点的树木早期生长综合表现排名顺序为:龙丰>水口>汝湖>小金口>白鹭湖;不同树种配置模式保存的树木生长表现综合评价结果表明,3号生态景观林带综合排名前3的树种配置模式分别是3-14、3-18、3-2,其中模式3-14保存的造林树种为凤凰木、黄槐、鸡冠刺桐、樟,模式3-18保存的树种有凤凰木、樟,模式3-2保存的树种有大叶紫薇、凤凰木、黄槐、樟;10号生态景观林带树木生长表现综合排名前3的分别是10-10、10-14和10-2配置模式,其中模式10-10保存的树种为大叶紫薇、簕杜鹃,模式10-14保存的树种为凤凰木、黄槐、美丽异木棉,模式10-2保存的树种为大叶紫薇、凤凰木、红花羊蹄甲、美丽异木棉。

Five sample spots of No.3 and No.10 eco-landscape forest belt in Huicheng District,Huizhou city were investigated through sub-compartment survey.The results showed that trees planted in 5 sample spots had a good growth performance,the survival rate was 87.8％,and the average height and diameter at breast height were 2.6 m and 7.5 cm,respectively.The results of comprehensive assessment showed that the order of trees early growth among 5 sample spots was Longfeng ＞ Shuikou ＞ Ruhu ＞ Xiaojinkou ＞ Bailuhu.The ranking of trees early growth of different configuration modes in 5 sample spots indicated that,in No.3 eco-landscape forest belt,top three were 3-14,3-18 and 3-2,the survival tree species were Delonic regia ＋ Cassia surattensis ＋ Euthrina crista-galli ＋ Cinnamomum camphora in 3-14,D.regia ＋ Cinnamomum camphora in 3-18 and Lagerstroemia speciosa ＋ D.regia ＋ Cassia surattensis ＋ Cinnamomum camphora in 3-2,respectively.The top three configuration modes in No.10 eco-landscape forest belt were 10-10,10-14 and 10-2,the survival tree species were L.speciosa ＋ Bougainvillea spectabilis in 10-10 D.regia ＋ Cassia surattensis ＋ Chorisia speciosa in 10-14 and L.speciosa ＋ D.regia ＋Bauhinia blakeana ＋ Chorisia speciosa in 10-2,respectively.