摘要
从自然原因和人为原因2方面详细阐述格木出现天然更新障碍的原因。格木生境要求苛刻,如温暖、光照强和水分好等;格木更新依赖种子,其种子不透水性和抑制物质导致难以萌发,且幼苗易遭病菌和虫蛀,这些均为格木天然更新能力弱的原因。人们过度砍伐也成为格木种群更新障碍的原因之一。针对格木濒危现状和原因,提出加强对格木原地保护,做好迁地保护工作,开展培育技术方面的研究等5方面格木种群资源科学保护对策。提出今后格木重点研究方向为格木天然更新障碍机制研究和格木大径材近自然高效培育技术研究。
The natural regeneration barriers of Erythrophleum fordii were illustrated from natural and man-made causes. Erythrophleum fordii was strict on habitat,such as warmth,light and moisture and its natural regeneration depended on seeds,but the seeds were impervious to water and inhibits,which showed in the difficulties in germination and low germination rate. The seeds were vulnerable to germs and moths because of the weak natural regeneration ability. The excessive deforestation was also one of the causes of natural regeneration barriers. This paper put forward 5 countermeasures for species resources conservation,including strengthening in situ conservation,implementing ex-situ conservation and developing cultivating research. The future research of Erythrophleum fordii should focus on the mechanism of natural regeneration barriers and the close-to-nature management of large timber.
作者
韦菊玲
刘福妹
雷丽群
邓硕坤
农友
刘士玲
WEI Juling;LIU Fumei;LEI Liqun;DENG Shuokun;NONG You;LIU Shiling(Experimental Center of Tropical Forestry,Chinaese Academy of Forestry,Pingxiang,Guangxi 532600,China)
出处
《林业调查规划》
2018年第4期42-45,108,共5页
Forest Inventory and Planning
基金
"十三五"国家重点研发计划:南方主要珍贵用材树种高效培育技术研究(2016YFD0600601)
中国林业科学院热带林业实验中心主任基因项目(RL-2017-05)
关键词
格木
珍稀濒危树种
天然更新
更新障碍
种质资源保护
近自然森林经营
Erythrophleum fordii
rare and endangered tree species
natural regeneration
regenerationbarriers
species resources conservation
close-to-nature management
