摘要
应用固定样地调查生物量的方法 ,在北京市顺义县潮白河林场进行了加杨 (Populus×canadensis)刺槐 (Robiniapseudoacacia)混交林细根动态变化的研究 .结果表明 ,混交林的细根生物量大于刺槐纯林而小于杨树纯林 ,两树种混栽后杨树能促进刺槐的细根生长 ,提高了刺槐细根生物量在混交林中的比例 ;混交林细根在各土层中分布得比纯林更均匀、更合理 ,种间关系协调 ;混交林的细根周转率介于两种纯林之间 ;混交林中刺槐能促进杨树细根的更新 。
The study on fine root dynamics in mixed plantation of poplar (Populus canadensis) and black locust ( Robinia pseudoacacia )was conducted in the Chaobaihe Farm of Beijing City. The results show that: fine root biomass in mixed plantation was higher than that in pure stands of black locust and less than that in pure stands of poplar. Poplar stimulated the growth of black locust fine root and improved its fine root biomass in mixed stands; fine root biomass distributed better in mixed stands than in pure stands; turnover rate of mixed plantation fine roots was in the middle between poplar pure stands and black locust pure stands. The fine root regeneration of poplar was stimulated and turnover rate of fine root was speeded up by black locust.
出处
《北京林业大学学报》
CAS
CSCD
北大核心
2002年第5期39-44,共6页
Journal of Beijing Forestry University
基金
国家自然科学基金资助项目 ( 39870 6 43)
教育部博士点基金资助项目 ( 970 0 2 2 0 9)
