塔里木河中游胡杨群落结构特征分析  

The Analysis of Community Structure Characteristics of Populus euphratica in the Middle Reaches of Tarim River

作　　者：吕瑞恒[1,2] 韩路[1,2] 周正立[1,2] 梁继业[1,2] 于军[1,2] 

机构地区：[1]新疆塔里木大学植物科学学院,新疆阿拉尔843300 [2]新疆生产建设兵团塔里木盆地生物资源保护利用重点实验室,新疆阿拉尔843300

出　　处：《中国农学通报》2013年第22期57-61,共5页Chinese Agricultural Science Bulletin

基　　金："973"计划前期研究专项"塔里木荒漠河岸林土壤水文过程与植被生态响应机理研究"(2011CB411909);"973"计划前期研究专项"塔里木河荒漠河岸植被变化及水文生态效益驱动机制研究"(2012CB723204);兵团博士点基金"塔西南荒漠河岸林演化机制与恢复技术体系研究"(2011BB021);国家自然基金"胡杨;灰杨种群结构与空间格局形成的生态过程和水盐生态阈值研究"(31060066)

摘　　要：为了解生长状况良好的胡杨群落,在塔里木河中游沿岸选择具有代表性胡杨群落,设立1hm2固定样地,调查分析胡杨林群落结构特征。结果表明:胡杨群落垂直层次优势种较为明显,形成以胡杨+柽柳+芦苇、假苇拂子茅为优势种的荒漠河岸林群落类型;胡杨种群属于稳定型种群,个体数量在不同径级之间分布合理;在不同尺度下,胡杨种群均处于集群分布;胡杨种群在不同发育阶段分布格局由聚集分布向随机分布转变。In order to understand the growth status of the Populus euphratica community under well-preserved conditions, the 1 hm2 permanent plot was established near the coast of the middle reaches of the Tarim River in the south of Xinjiang. The results showed that： the dominant species of community vertical layers were more obvious, and formed the desert riparian forests types as P. euphratica ＋ Tamarix chinensis ＋ Phragmites communis and Calamagrostis pseudophragmites; P. euphratica populations was stable populations, the number of individuals in the different diameters was reasonable; the spatial distributions of the P. euphratica populations conformed to clumped patterns in different scales; P. euphratica populations changed from clumped pattern to random pattern during their upgrowth.

关 键 词：胡杨 群落结构 径级 分布格局 

分 类 号：S718.54[农业科学—林学]