北京玉渊潭樱花健康等级评价

On health level evaluation of Cerasus in BeijingYuyuantan Park

【目的】科学评价北京玉渊潭公园樱花(Cerasus spp.)健康状况,为一线养护提供数据支撑。【方法】运用层次分析法从观赏价值、生态适应性、抗性3个方面制定出11个评价指标,对20种樱花进行综合评价。【结果】建立了玉渊潭樱花健康综合评价体系,并划分为Ⅰ级优良(4.00~5.00分)、Ⅱ级较好(3.50~3.99分)、Ⅲ级一般(3.00~3.49分)、Ⅳ级较差(2.00~2.99分)、Ⅴ级差(1.00~1.99分)5个健康等级,调查的樱花样树中Ⅰ级占31.9%,Ⅱ级占25.7%,Ⅲ级占26.6%,Ⅳ级占14.9%,Ⅴ级0.9%。【结论】樱花整体上表现为健康、生长良好,但仍需加强养护管理力度,较差、差的樱花需要进行后期复壮,甚至换树。

[Objective]To scientifically evaluate the health status of Cerasus applied in BeijingYuyuantan Park,and to provide data support for first-line conservation.[Methods]The analytic hierarchy process(AHP)was used to develop 11 evaluation indexes from three aspects of ornamental value,ecological adaptability and resistance,and comprehensively evaluate Cerasus of 20 species.[Results]A comprehensive evaluation system for the health status of Cerasus in Yuyuantan was established and divided into five health grades:excellent gradeⅠ(4.00-5.00 points),good gradeⅡ(3.50-3.99 points),fair gradeⅢ(3.00-3.49 points),poor gradeⅣ(2.00-2.99 points)and poor gradeⅤ(1.00-1.99 points).Survey of Cerasus like trees,gradeⅠaccounted for 31.9%,gradeⅡaccounted for 25.7%,gradeⅢaccounted for 26.6%,gradeⅣaccounted for 14.9%and gradeⅤaccounted for 0.9%.[Conclusion]The Cerasus are healthy and growing well on the whole,but the conservation and management should be strengthened.The poor and poor Cerasus need to be rejuvenated and replaced.