摘要
中国沙棘属于阳性树种,也是典型的克隆植物,因此有些学者将其视为群落演替过程中的先锋种群,而有些学者的研究表明它在自然状态下更新良好。近年来的研究进一步证明,中国沙棘能够通过克隆生长所赋予的生理整合作用、觅养行为以及死亡风险分摊等特性实现资源的共享,缓解资源在时空异质性上对种群稳定性造成的压力,从而提高环境资源的利用效率以及自身的繁殖和生存有效性,能够通过平茬更新、林窗更新以及林缘扩散等途径维持种群的稳定性和持久性。
Hippophae rhamnoides L.subsp. sinensis is not only a heliophyte but also a typical clonal plant, so that some scholars consider it as a pioneer population, but others regard that the tree regenerate weLl in natural conditions. The studies carried out recently years also showed that the tree has a high utilization ratio in natural resources and a high availability in clonal propagation and survival rate with physiological integration, foraging behavior and risk-spreading of death as a result of clonal growth. Therefore, to relief the pressure of population stability maintenance in heterogeneity environment can share the resources in heterogeneity environment. Meanwhile, the population can maintain its stability with edge dispersal, gap regeneration and sprouts by cutting.
出处
《福建林业科技》
北大核心
2008年第2期148-152,170,共6页
Journal of Fujian Forestry Science and Technology
基金
国家自然科学基金项目(30371193)
云南省学术与技术带头人专项计划项目(2005PY01-20)
西南地区生物多样性保育国家林业局重点实验室基金项目
关键词
中国沙棘
稳定性
生理整合
觅养行为
克隆内分工
风险分摊
Hippophae rhamnoides L. subsp, sinensis
stability
physiological integration
foraging behavior
reciproeal patchiness of resources
risk-spreading
