摘要
本文通过对西藏雅鲁藏布江中游下段沿江沙地主要建群植物砂生槐在沙地上繁殖特征、沙埋对其新枝生长的影响及在沙地植被演替中的地位的分析指出：砂生槐是通过种子的迁移侵入、定居于沙地，通过根蘖在沙地上繁殖，最后退化于种间竞争。一定程度的沙埋有利于砂生槐新枝生长。砂生槐在本区的最适生境是受风沙活动影响较大的覆沙阶地、半固定沙地和初期固定沙地。
The reproductive characteristics and the arenaceous adaptability of Sophora moorcroftiana as well as its roles in sandy land vegetation succession in middle and lower reaches of Yaluzangbu River in Tibet were analyzed.The results show that Sophora moorcroftiana was one of the dominant constructive species in the area,and its optimal habitats were terrace covered with sand,semistable dunes and initial stage of fixed sand dunes.Sand burial was favorable to production of new branches.Throughout the duration of succession beginning with mobile dune,Sophora moorcroftiana invaded and developed in mobile dune by seed reproduction firstly,then became rampant by root turion and finally declined owing to interspecific competition.
出处
《植物生态学报》
CAS
CSCD
北大核心
1998年第4期379-384,共6页
Chinese Journal of Plant Ecology
关键词
砂生槐
繁殖特征
沙生适应性
演替地位
Sophora moorcroftiana,Reproductive characteristics,Arenaceous adaptability
