黄河三角洲柽柳种群空间分布格局研究  

Spatial Distribution Pattern of Tamarix chinensis in Yellow River Delta

作　　者：刘富强[1] 王延平[1] 杨阳[1] 许景伟 王华田[1] 

机构地区：[1]山东农业大学林学院,山东泰安201718 [2]山东林业科学研究院,山东济南251000

出　　处：《西北林学院学报》2009年第3期7-11,16,共6页Journal of Northwest Forestry University

基　　金：国家“十一五”科技支撑项目“胶东地区城市濒海地绿化植物选择研究”(2006BAD03A1404)

摘　　要：设置21个20 m×20 m样地,调查了黄河三角洲柽柳种群分布特点,采用离散分布理论拟合和聚集强度测定方法,对柽柳种群在不同生境内的空间分布格局进行了比较分析。结果表明:柽柳种群空间分布格局属于聚集分布,在32 m2面积上聚集强度较大。由沿海滩涂湿地向内陆过渡,柽柳种群的聚集强度逐渐降低;在沿海滩涂地、滨海地和盐碱地内,柽柳种群聚集较强的尺度分别为64、24、64 m2。柽柳种群分布格局主要受环境条件的影响,是对环境长期适应和自然选择的结果。Tamarix chinensis population in Yellow River Delta area was investigated, a comparative study on the spatial distribution pattern of T. chinensis population was carried out, and its dynamics were made by the tests of discrete distribution pattern and aggregation intensity. The results showed that at different sampling areas, all the T. chinensis populations performed a pattern of clustering distribution. As the sampling area increased, the congregating intensity of T. chinensis population appeared a pattern of high→ low→high, and the highest congregation occurred in the area of 32 m^2. The clustering intensity went down as the distance to the coast increased, and the area with the highest clustering intensity occurred was 64 m^2 in mudflat, 24 m^2 in sea front, 64 m^2 in saline-alkali soils, respectively. The distribution pattern of T. chinensis was affected by the environmental factors, and this is the result of long-term adaptation to the environment and of nature selection.

关 键 词：柽柳种群 空间分布 生境 

分 类 号：S793.502[农业科学—林木遗传育种]