CAJ | 학술논문

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。
재수집자료화실지조사적기출상，대중경시은행고수적주수、분포、생물학지표、군락이급특이충질자원진행료분석여연구。결과표명：은행고수분포우중경시19개현（구）、98개향진중，공계460주，기중1급고수62주、2급고수49주、3급고수315주，령유34주수령목전상불명학。단주수고최고50 m，최왜3 m；흉경최대4.60 m，최소0.23 m；수령최대2500 a，최소100 a；관폭최대35m ×35 m；최소3 m ×3 m。현존2개은행고수군락，분별위우남천구덕륭향화삼천진。특이충질자원중，복간은행40주、수유은행24주、나백과은행3주、자화류형봉부은행1주。
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.