摘要
为研究海拔对植物果期资源分配的影响,利用烘干称量法,检测分析了青藏高原东缘不同海拔14个居群的甘肃风毛菊(Saussurea kansuensis)果期资源分配对海拔的响应.结果表明,甘肃风毛菊个体大小,繁殖器官和营养器官的生物量、根系和茎叶质量以及种子的数量均随海拔的升高呈下降趋势;海拔与甘肃风毛菊繁殖和根系分配间存在正相关关系,与营养和茎叶分配间存在负相关关系.表明海拔对风毛菊果期个体大小及资源分配有重要影响;风毛菊通过对各结构资源分配的权衡,来适应恶劣的高山环境.
In order to study the effect of elevation on plant fruit resource allocation , drying and weighing method are used to detect and analyze the eastern margin of the Tibetan plateau at an elevation of 14 different populations of Saussurea kansuensis in response to resource allocation fruit to elevation . Results indicate ：the elevation and individual size , the biomass of the reproductive organs , the biomass of the vegetative organs , root system mass , stem leaf mass and seed numbers show a negative correlation relationship . Elevation and reproductive allocation , root system allocation are positively related , and is negatively related with vegetative allocation and stem leaf allocation . The results show that elevation has an important influence on individual size and resource allocation of Saussurea kansuensis . Saussurea kansuensis is trying to adapt to the severe environment by balancing structure allocation of different resource .
出处
《西北师范大学学报（自然科学版）》
CAS
北大核心
2017年第4期87-91,97,共6页
Journal of Northwest Normal University(Natural Science)
基金
国家自然科学基金(31460105)
关键词
海拔
甘肃风毛菊
繁殖分配
根系分配
权衡
elevation
Saussurea hansuensis
reproductive allocation
root system allocation
trade-off
