强度干扰红松阔叶林种子库特性及其动态初步研究  

Study on Characteristics Dynamics of Seed Bank of the Intensive Disturbed Korean Pine and Broad-leaf Mixed Forest

作　　者：尚红喜[1] 何学凯 黄光强 李景文[1] 

机构地区：[1]北京林业大学资源与环境学院,北京100083 [2]黑龙江省东折陵河自然保护区,伊春153000 [3]湖北长阳土家族自治县林业局,长阳443500

出　　处：《科学技术与工程》2006年第3期256-260,共5页Science Technology and Engineering

基　　金："九五"国家重点科技攻关项目(96-004-02-05);国家自然科学基金(30270261)资助

摘　　要：探讨了对针阔混交林过伐林种子更新的动态,通过对样地乔木树种的种子库、枯枝落叶层的种子库以及土壤种子库与当年生幼苗的关系得出:在自然条件下,各树种的种子库中种子转化为幼苗的比率极低,一般在0.0055%—0.5000%之间。同时,分析并强调了枯枝落叶层在种子库动态中以及在森林更新中的生态学意义。并且,结合植被动态演替和现有林的经营提出了“潜接层”概念。The seed regeneration dynanlics of secondary theropencedrynlion are discussed. The results indicated that the invert percentage of seeds to seedlings was 0. 0055-0.5% by studying the relationship of the total, litter layer, soil seed bank and annual seedlings, and the result was much lower than artificial sowing. Meanwhile ,The importance of the litter layer in the dynamics of seed bank and forest regeneration are analyzed and emphasized. Moreover, a concept is invented of ＂Potential connection layer＂ for the vegetation succession and forest dynamic management.

关 键 词：红松阔叶林 干扰 种子库 苗库 

分 类 号：S722.11[农业科学—林木遗传育种]