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FOREST RESOURCES WANAGEMENT ›› 2012, Vol. 0 ›› Issue (6): 71-75.

• Science and Technology • Previous Articles     Next Articles

Ancient Trees' Health Evaluation in Beijing

XIE Yuanyuan1,2, WU Hailong3, HUANG Haofeng4, LIU Jinglan1, WANG Nali5, CAO Jun5, ZHANG Zhenming1   

  1. 1. College of Nature Conservation,Beijing Forestry University,Beijing 100083,China;
    2. Xi'an Railway Vocational &Technical Institute,Xi'an 710014,China;
    3. College of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China;
    4. Beijing Gold Wuhuan Landscape Engineering Limited Liability Company,Beijing 100022, China;
    5. Landscape and Forestry Bureau of Miyun Country,Beijing 101501,China
  • Received:2012-04-11 Revised:2012-09-03 Online:2012-12-28 Published:2020-11-27

Abstract: In the principle of scientificalness,representativeness,operability and systematicness,11 indexes such as gradient of stem,injury degree from stem,branches,leaves,roots,plant diseases or insect pests and growing environments were chosen for evaluating 358 ancient trees distributed in Xiangshan,Qingwangfen,Mingyongling,around the second ring road and Ditan in this study.The result indicated that the trees were mainly subhealthy with a percentage of 60.89,the healthy trees were 33.80,5.31 percent trees were unhealthy and no trees were dying.According to the different places,healthy trees were the main part in Ditan and Qingwangfen with a percentage of 100 and 77.36 respectively;and sub-healthy trees were the main part in Xiangshan,around the second ring road and Mingyongling with a percentage of 87.5,81.25 and 71.96 respectively.

Key words: Beijing, ancient trees, health evaluation

CLC Number: