摘要
为给营造针阔混交林和提高林地生产力提供理论依据,探索了林窗和林下环境不同埋藏深度对栲树和小叶栲种子萌发率和幼苗存活率的影响。结果表明,随着埋藏深度的增加,栲树和小叶栲种子萌发率和幼苗存活率降低,林窗种子萌发率和幼苗存活率高于林下,种子死亡率低于林下,埋藏过深对栲树和小叶栲种子萌发、幼苗存活及森林更新会产生不利影响。结论:埋藏深度为0.5cm有利于栲树和小叶栲种子萌发,林窗比林下更有利于栲树和小叶栲种子萌发和森林更新。
The effects of different burial depth on the germination of C.fargesii and C.carlesii were explored in gap and understory environment to provide a theoretical reference for building theropencedrymion and enhancing forest land productivity.The results showed that the seed germination rate and seedling survival rate of C.fargesii and C.carlesii decreased with the increase of burial depth.The seed germination rate and seedling survival rate in gap environment was higher than that in understory environment.But the seed death rate was lower than understory.Too deep in the ground had negative effects on seed germination,seedling survival and forest regeneration of C.fargesii and C.carlesii.Conclusion： The burial depth of 0.5 cm is beneficial for seed germination of C.fargesii and C.carlesii.And the gap environment is more suitable for seed germination and forest regeneration of C.fargesi and C.carlesii than understory environment.
出处
《贵州农业科学》
CAS
北大核心
2012年第11期185-188,共4页
Guizhou Agricultural Sciences
基金
三峡库区常绿阔叶林重要建群种--栲树
小叶栲近自然经营关键技术及在库区生态屏障建设的示范研究(CSTC
2010AB1110)
三峡库区流域生态修复关键技术与示范研究(201004039)
提升林地生产力复合经营技术研究(CSTC
2009AB1115)
三峡库区森林生态保护与恢复重庆市市级重点实验室(CSTC
2007CA1001)
关键词
栲树
小叶栲
埋藏深度
种子萌发
Castanopsis fargesii
Castanopsis carlesii
burial depth
seed germination
