沾益区古树名木资源分布特征研究

Study on Distribution Characteristics of Ancient and Famous Trees in Zhanyi District

为了落实国家和云南省生物多样性保护战略与行动计划,实现沾益区古树名木有效保护和可持续利用,基于当地古树名木资源普查资料与实地调研结果,结合GIS核密度分析,对曲靖市沾益区古树名木资源的分布特征及生长势现状进行了研究与分析。结果表明:曲靖市沾益区共有古树名木494株(含11个古树群),隶属于31科、48属、62种,以黄连木、滇朴和高山栎为优势树种;树龄为60~500 a,平均树龄(187.85±3.77 a);古树资源在空间结构上呈聚集形态,形成3个高密度核心区和7个次核心区,分布密度为7.36株/hm^(2);古树名木整体长势良好,生长状态正常的占88.25%,但仍有部分古树的立地环境差或遭受病虫害和人为破坏。

This study aims to implement the protective strategy and action plan of biological diversity at national and Yunnan levels,and to realize efficient protection and sustainable utilization of ancient and famous trees in Zhanyi District,Qujing City.Relying on the survey data of local ancient and fomous trees combined with on-the-spot investigation,the article has studied the distribution character and growth status of ancient and famous trees resources in Zhanyi District with the help of ArcGis spatial visualization method,using kernel density calculation.The results show that there are 494 ancient and famous trees(including 11 ancient tree groups)in Zhanyi District,Qujing City,belonging to 62 species,48 genera,and 31 families.Pistacia chinensis,Celtis tetrandra and Quercus semicarpifolia are the dominant species.The tree age in the study area ranges from 60 a to 500 a,with an average age of 187.85±3.77a.The ancient tree resources are clustered in spatial structure,forming three high-density core areas and seven sub-core areas with a distribution density of 7.36 trees/hm^(2).The growth of the ancient and famous trees are good overall,among which 88.25%has maintained a normal growth,but partial ancient trees are in poor site enviroments or are suffering from the damage from pests,diseases and vandalism.