西藏砂生槐种群分布格局分析  

Analysis on Distribution Pattern of Sophora moorcroftiana Population in Tibet

作　　者：罗怀斌[1] 

机构地区：[1]国家林业局中南林业调查规划设计院,长沙410014

出　　处：《中南林业调查规划》2012年第1期54-56,共3页Central South Forest Inventory and Planning

摘　　要：通过对雅鲁藏布江中游谢通门县卡嘎镇、乃东县多颇章和朗县朗镇三个区域砂生槐群落的调查与分析,结果表明:砂生槐天然种群分布在干旱荒漠地区,常形成单优群落,结构单一,砂生槐为群落中的优势种,在流动或半固定的风沙地上成均匀分布,种群密度大,结构相对稳定,退化程度小;在砾质沙地风沙坡地上成集群分布,种群密度小,种群稳定性较差,退化程度明显。Sophora moorcrofiiana community was investigated and analyzed in three regions, that is. , Kaga town of Xietongmen of the Yarlung county, Duopozhang town of Naidong county and Lang town of Lang county in the middle reaches Zangbo river, the results showed that ： the natural population of Sophora moorcrofiiana which dis- tributed over arid desert area usually forming the single-dominant community, and its structure was also single, and the Sophora moorcrofiiana was the dominant species of community ; Sophora moorcrofiiana which distributed evenly over floating or semi-fixed windy and sandy land, and its population density was large, and its structure was relatively stable, and its degradation degree was also small; Sophora moorcrofiiana which distributed over gravelly sandy land and windy ＆ sandy slope land was a cluster distribution, and its population density was small, and its population stability was relatively worse, as well as, its degeneration degree was apparent.

关 键 词：西藏 砂生槐 分布格局 

分 类 号：S718.54[农业科学—林学]