| 北京城区银杏行道树生长现状与健康状况研究 |
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| 引用本文： | 郄光发,彭镇华,王成.北京城区银杏行道树生长现状与健康状况研究[J].林业科学研究,2013,26(4):511-515. |
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| 作者姓名： | 郄光发 彭镇华 王成 |
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| 作者单位： | 中国林业科学研究院林业研究所,国家林业局城市林业研究中心,北京100091 |
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| 基金项目： | 国家科技支撑计划项目(2011BAD38B03) |
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| 摘 要： |
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| 关 键 词： | 北京城区 银杏 行道树 生长现状 健康状况 |
| 收稿时间： | 2012/5/11 0:00:00 |
Growth and Health Status of Ginkgo biloba in Beijing Urban Street Area |
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| QIE Guang-f,PENG Zhen-hua and WANG Cheng.Growth and Health Status of Ginkgo biloba in Beijing Urban Street Area[J].Forest Research,2013,26(4):511-515. |
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| Authors: | QIE Guang-f PENG Zhen-hua and WANG Cheng |
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| Institution: | Research Institute of Forestry, Chinese Academy of Forestry, Research Center of Urban Forestry of State Forestry Administration, Beijing 100091, China;Research Institute of Forestry, Chinese Academy of Forestry, Research Center of Urban Forestry of State Forestry Administration, Beijing 100091, China;Research Institute of Forestry, Chinese Academy of Forestry, Research Center of Urban Forestry of State Forestry Administration, Beijing 100091, China |
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| Abstract: | The planting site, size, and health condition of street tree Ginkgo biloba in Beijing urban area were investigated and the influence factors were analyzed based on filed survey. The results showed that G. biloba were mainly planted in tree pit within strip planting median. The average height, diameter at breast height and canopy diameter were 8.11 m, 13.22 cm and 4.07 m, respectively, 82.9% trees were less than 10 m in height, and most G. biloba trees were still in the initial stage of height and diameter increment. The tree health status was described with three classes: class I (healthy), class II (fair) and class III (unhealthy). The percentage of class I, II and III for G. biloba trees in Beijing urban area accounted for 16.0%, 37.2% and 42.9% respectively. The results of analysis showed that the health status of G. biloba was associated with the site condition, tree size and management practices. The trees planted in urban forest patch grew better than the trees planted in green belts and tree pits; meanwhile, the bigger trees were healthier than the smaller ones. In addition, the effects of urban heterogeneous environment and human activities on the health of Ginkgo biloba were analyzed and the suggestions on management were launched. |
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| Keywords: | Beijing urban area Ginkgo biloba street tree urban tree growth health condition |
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