当前位置: 首页 > 文章 > 植冠种子库沙生适应性的研究简报 中南林业科技大学学报 2014,34 (2) 39-43
Position: Home > Articles > Research notes on arenaceous adaptability of canopy seed bank Journal of Central South University of Forestry & Technology 2014,34 (2) 39-43

植冠种子库沙生适应性的研究简报

作  者:
马君玲
单  位:
大连交通大学环境与化学工程学院
关键词:
植冠种子库;风沙干扰;生态适应性;研究简报
摘  要:
在沙区植被恢复研究中,植冠种子库作为沙生植物的主要特征之一逐渐体现出它独具特色的生态功能。为了探讨风沙干扰下的植冠种子库在种群繁衍过程中的作用及揭示沙生植物的适应机制,通过选择具有植冠种子库的典型沙生植物,采用实验室分析、模拟试验、野外调查等方法,系统研究植冠种子库在个体和景观尺度对种子库时空格局的影响、植冠种子库对种子萌发和幼苗出土的调节作用。结果表明,植冠种子库通过调节繁殖体传播、种子库时空格局、种子萌发和幼苗出土减缓季节性干旱、风蚀沙埋对种子供应和幼苗生成造成的威胁,提高沙生植物补员和定居的成功率。
译  名:
Research notes on arenaceous adaptability of canopy seed bank
作  者:
MA Jun-ling;College of Environmental and Chemical Engineering,Dalian Jiaotong University;
关键词:
canopy seed bank;;wind-sand disturbance;;ecological adaptability;;research notes
摘  要:
Canopy seed bank as one of the important characteristics of psammophyte gradually manifests its unique ecological functions in vegetation restoration research of sand dune areas. In order to explore the infl uences of canopy seed bank on breeding populations under wind-sand disturbance and reveal the adaptation mechanism of psammophyte, the typical psammophytes were selected to investigate the influences of canopy seed bank on seed bank pattern, germination and seedling emergence by means of laboratory analysis, manipulative experiments and fi eld investigations. The results indicate that canopy seed bank alleviated the impacts of seasonal drought, erosion and sand burial on seed availability and seedling recruitment through adjusting seed dispersal, spatio-temporal pattern of seed bank and timing of seed germination and seedling emergence, thus increasing the success ratio of settlement and proliferation of psammophytes.

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