摘要
2010年,在浙江宁波育王山常绿阔叶落叶混交林中选择林中和林缘2个种群各3株成熟龄的糙叶树(Aphanthe aspera),通过种子框和地表取样,分析糙叶树种子雨和地表土壤种子库动态、种子存留及其命运。结果表明:糙叶树种子雨为9月2日—11月4日,持续时间64 d,高峰期出现在9月23日—10月21日;在整个种子雨期间,林中、林缘种群种子散落密度分别为151、300个·m^(-2),完好有活力的种子均占总数的98%;林缘种群的种子平均长度、宽度和质量显著优于林中种群;种子雨结束150 d后,林缘、林中种群地表种子库被动物捕食率分别为97.31%、97.25%,地表种子存活率仅为1.7%、2.05%。糙叶树种群的高种子产量、低种子存留等因素限制了种群的天然更新。
In order to understand the seed production and retention of Aphananthe aspera,we investigated seed rain and seed bank of mature Aphananthe aspera in two habitats(including inner forest and forest edge)in 2010,in the Yuwang hill of Ningbo,Zhejiang Province.By using seed trap and land surface sampling,we collected seeds quantity and analyzed seeds distribution.The results showed that:the seed rain lasted for 64 days from September 2th to November 4th,and its peak occurred from September 23th to October 21th.During the whole seed rain period,the seed scattering density of inner forest and forest edge were 151 and 300·m^(-2),respectively,and the intact seeds accounted for 98%totally.The average width,length and weight of seed in the forest edge was significant higher than inner forest.150 days after the end of seed rain,the predation proportion accounted for 97.31%and 97.25%of seed for inner forest and forest edge.Meanwhile,in two different habitats,survival rate of seed only was responsible for 1.7%and 2.05%,respectively.In conclusion,high seed yield and low seed retention limit the natural regeneration of the population of the Aphanthe aspera.
作者
赵绮
王良衍
周赵
ZHAO Qi;WANG Liangyan;ZHOU Zhao(Yinzhou station for popularizing agricultural technique,Ningbo 315100,Zhejiang,China;Tiantong National Forest Park,Ningbo 315114,Zhejiang,Chi na;Zhejiang University of water resources and electric power,Hangzhou 310018,Zhejiang,China)
出处
《福建林业科技》
2023年第2期13-16,23,共5页
Journal of Fujian Forestry Science and Technology
基金
宁波市鄞州区科技局项目(基于以草抑草立体园地生态栽培模式构建与示范,2019AS0009,鄞科[2019]87号)。
关键词
糙叶树
种子雨
种子库
育王山
Aphananthe aspera
seed rain
seed bank
Yuwang hill
作者简介
第一作者:赵绮(1978-),女,宁波市鄞州区农业技术推广站高级工程师,从事林业生产管理。E-mail:312625725@qq.com。
