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机构地区:[1]华南农业大学林学院,广东广州510642 [2]佛山科学技术学院生命科学学院,广东佛山528000 [3]佛山市石湾园林建筑工程公司,广东佛山528031
出 处:《西北林学院学报》2009年第1期177-181,共5页Journal of Northwest Forestry University
基 金:广东省林业局项目(4400-F03067);广东省科技攻关项目(2007B020703002)
摘 要:准确、及时地评估园林树木的健康状况,可让管理者了解树木的生长状况,及早发现园林树木潜在的危险,制定和调整与之相适应的养护措施,使园林树木发挥最佳的生态、社会及景观效益。本研究在绿地调查的基础上,结合专家意见,从整体状况、树冠、树干、根部等4方面着手,选择14个直观综合性指标构建园林树木健康评价体系;通过层次分析法(analytic hierarchy process,AHP法)确定各指标的相对权重。从评价模型的权重结果来看,权重值较高的3个指标分别是树势(0.202)、顶梢枯死(0.140)、干基腐朽(0.143),而权重值较低的指标则是倾斜(0.025)、寄生(0.017)、根部损伤(0.025)和通气透水性(0.017)。Accurate and timely assessment of landscape tree health can help landscape managers to identify potential hazards from landscaping trees, thus to establish and adjust relative tending and maintenance measures to acquire the best ecological, societal and landscape benefits. This study, based on open space survey and expert views, established a model for assessing tree health by using 14 integrated visual indicators in terms of the general conditions of tree, crown, trunk and root. Relative weight of the indicators was determined using Analytic Hierarchy Process (AHP). Results from the assessment model indicated that tree vigor(0. 202), crown dieback(0. 140), and butt rot(0. 143) were the most important indicators with maximum weights, whereas tree lean(0. 025), parasitism(0. 017), root hazard(0. 025), and root permeability(0. 025) were less important with minimum weights.
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