重庆市银杏古树资源调查与分析  

Inventory and Analysis of the Ancient Ginkgo Tree Recourses in Chongqing City

作　　者：任娟霞[1] 辛红[1] 邢世岩[1] 刘源[1] 刘莉娟[1] 付兆军[1] 

机构地区：[1]山东农业大学林学院,山东泰安271018

出　　处：《福建林业科技》2014年第1期183-188,共6页Journal of Fujian Forestry Science and Technology

基　　金：国家科技支撑计划课题(2012BAD21B04);国家自然科学基金项目(30671707;30872040)

摘　　要：在收集资料和实地调查的基础上,对重庆市银杏古树的株数、分布、生物学指标、群落以及特异种质资源进行了分析与研究。结果表明:银杏古树分布于重庆市19个县(区)、98个乡镇中,共计460株,其中1级古树62株、2级古树49株、3级古树315株,另有34株树龄目前尚不明确。单株树高最高50 m,最矮3 m;胸径最大4.60 m,最小0.23 m;树龄最大2500 a,最小100 a;冠幅最大35m×35 m;最小3 m×3 m。现存2个银杏古树群落,分别位于南川区德隆乡和三泉镇。特异种质资源中,复干银杏40株、垂乳银杏24株、糯白果银杏3株、雌花类型丰富银杏1株。On the foundation of data collection and field survey,this paper analyzed and studied the number,distribution,biological indexes,community,and specific germplasm recources of ancient Ginkgo trees in Chongqing City.The results showed that there were totally 460 ancient Ginkgo trees in the city,distributed in 19 counties （districts）,98 townships （towns）,of which 62 trees were at first class level,49 at second level,315 at third class level,and the other 34 not clear.The maximum tree height was 50 m,the mini-mum was 3 m;the maximum DBH was 4.60 m,the minimum was only 0.23 m;the maximum age was 2500 a,the minimum was 100 a;the maximum CW was 35 m ×35 m,and the minimum was only 3 m ×3 m.2 ancient Ginkgo tree communities were found in the city,one located in Delong Township,and the other in Sanquan Town,which all belonged to Nanchuan District.In the aspect of spe-cific germplasm recources,there were 40 multi-trunk Ginkgoes,24 chichi Ginkgo trees,3 waxy Ginkgo trees and 1 female gingko tree with rich flower.

关 键 词：银杏 古树 分布 生物学指标 群落 特异种质资源 重庆市 

分 类 号：S792.95[农业科学—林木遗传育种]