徐淮平原杨树农田防护林的成熟龄与更新龄  

Mature Age and Renewal Age of Poplar Farmland Shelter Belt of Xuhuai Plain

作　　者：邱治军[1] 胡海波[2] 

机构地区：[1]中国林业科学研究院热带林业研究所,广东广州510520 [2]南京林业大学森林资源与环境学院,江苏南京210037

出　　处：《南京林业大学学报（自然科学版）》2005年第1期46-50,共5页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：江苏省科技基础应用项目(BJ99029)

摘　　要：调查了江苏省铜山县大庙镇和新沂市邵店镇的23个杨树农田防护林标准地,分别研究了不同生长类型农田防护林的防护成熟龄、数量成熟龄以及经济成熟龄,确定了不同生长类型的更新龄。结果表明:生长类型 I的数量成熟龄、经济成熟龄和更新龄分别是14.0,18.0和19.0 a;生长类型 II的数量成熟龄、经济成熟龄和更新龄分别是15.5,21.0和22.0 a;生长类型III的数量成熟龄和经济成熟龄分别为17.5和24.0 a,更新龄为25.0 a;生长类型 IV的数量成熟龄≥20.0 a,经济成熟龄为24.0 a,更新龄为26.0 a。Based on the investigation of 23 poplar farmland shelter belts and their site condition in Damiao town of Tongshan county and Shaodian town of Xinyi county,Jiangsu province,the protection mature age(PMA),quantitive mature age(QMA) and economic mature age(EMA) of poplar farmland shelter belt are analyzed by the classification of poplar′s growth type.And finally,the renewal age(RA) of different growth types is confirmed.The results are as follows:QMA,EMA and RA of growth type I are 14.0 years,18.0 years and 19.0 years respectively;QMA,EMA and RA of growth type II are 15.5 years,21.0 years and 22.0 years respectively;QMA,EMA and RA of growth type III are 17.5 years,24.0 years and 25.0 years respectively;As for growth type IV,its QMA is more than 20.0 years,EMA and RA are 24.0 years and 26.0 years respectively.

关 键 词：杨树 农田防护林 成熟龄 更新龄 

分 类 号：S727.24[农业科学—林木遗传育种]