汉中市古树资源特征与现状分析

Resource Characteristics Analysis of Ancient Trees in Hanzhong City

在汉中市古树普查数据的基础上,对汉中市挂牌保护单株古树的种类组成、结构特征以及生长状况等进行了分析。结果表明:汉中市挂牌保护单株古树共有1291株,隶属于38科77属108种,主要以银杏科(Ginkgoaceae)、柏科(Cupressaceae)、漆树科(Anacardiaceae)、豆科(Leguminosae)等10个优势科为主。古树平均树龄为358年,集中在100~600年之间;平均树高为20.35 m,集中在10~30 m之间;平均胸径为97.1 cm,集中在40~150 cm之间;平均冠幅为13.77 m,集中在5~25 m之间。相关性分析结果表明,汉中市古树的胸径与树高、胸径与冠幅、树高与冠幅均呈现极显著正相关关系。根据调查的结果,针对汉中市古树资源保护提出了建议,旨在为未来汉中市古树的保护、发展、利用提供理论依据。

Based on collection data,analyzed species composition、structure characteristics and growth status of single ancient tree resources in Hanzhong City.The results show that there are 1291 single ancient tree belonging to 108 species in 77 genera of 38 families in Hanzhong City.In which,the dominant families including Ginkgoaceae、Cupressaceae、Anacardiaceae and Leguminosae.From structure of ancient tree resources in Hanzhong City,tree age is concentrated on 100-600 a with average tree age of 358 a,height is concentrated on 10~30 m with average height of 20.35 m,DBH is concentrated on 40~150 cm with average DBH of 97.1 cm,crown width is concentrated on 5~25 m with average crown width of 13.77m.The result of correlation analysis shows that there are extremely significantly positive correlations between DBH and height,DBH and crown width,height and crown width.Based on results,put forward purposeful suggestions for protection of ancient tree resources in Hanzhong City.