克隆植物中国沙棘种群稳定性维持途径的探讨  

A Discussion on the Population Stability Maintenance in Clonal Plant of Hippophae rhamnoides L.subsp.sinensis

作　　者：徐德兵[1] 李根前[1] 贺斌[1] 李甜江[1] 

机构地区：[1]西南林学院,昆明650224

出　　处：《国际沙棘研究与开发》2006年第4期44-48,共5页

基　　金：国家自然科学基金项目(30371193);云南省学术与技术带头人后备人才基金项目(2005PY01-20)

摘　　要：中国沙棘属于阳性树种,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,中国沙棘能够依靠克隆生长所赋予生理整合和觅养行为等特性提高环境资源的利用效率以及自身的繁殖和生存有效性,通过林窗更新和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 a heliophyte tree, 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 capability in elonal propagation and survival rate with physiological integration and foraging behavior as a result of clonal growth （stump and root sprout） . Therefore, the population could maintain its stability with edge dispersal, gap regeneration and trunk cutting.

关 键 词：中国沙棘逃避 克隆生长 林窗更新 林缘扩散 平茬更新 稳定性维持 

分 类 号：S793.6[农业科学—林木遗传育种]