疏勒河中游高盐生境长穗柽柳群落格局研究  

A study on population and community structure of Tamarix elongata growing in heavy saline soils in the Middle Reaches of the Shule River

作　　者：方敏彦[1] 章明[1] 丁品[1] 张德罡[1] 

机构地区：[1]甘肃农业大学草业学院,甘肃兰州730070

出　　处：《草业学报》2009年第3期20-27,共8页Acta Prataculturae Sinica

基　　金：国家科技部西部专项(2001BA901A33)资助

摘　　要：对生长于疏勒河中游重盐碱地和盐质沙丘2种高盐生境长穗柽柳群落进行调查,就该地区长穗柽柳群落格局进行了研究。结果发现,1)柽柳科植物相对其他科植物更适应这2种生境,长穗柽柳种群是该地区重盐碱地和盐质沙丘群落的优势种。2)重盐碱地分布长穗柽柳符合泊松分布;盐质沙丘分布长穗柽柳符合二项分布。3)重盐碱地群落优势种重要值依次为:长穗柽柳0.323、骆驼刺0.215、芦苇0.037、芨芨草0.029、西北天门冬0.018 4、大花罗布麻0.014;盐质沙丘群落优势种重要值依次为:长穗柽柳0.902、骆驼刺0.193、黑果枸杞0.081 4、芦苇0.020、花花柴0.006、红砂0.001。4)重盐碱地长穗柽柳与骆驼刺具有一定程度的生态负联结,而在盐质沙丘长穗柽柳与骆驼刺生态联结性不明显。The aboveground parts of Tamarix elongata and other plants, tog community structure composition of heavy saline soil and salt dunes in the are described. 1） Tamariaceae are more suitable for two of the habitats than ether with population structure and Middle Reaches of the Shule River other species and T. elongata was the dominant species in these two habitats. 2） The spacial pattern of T. elongata was a binomial distribution in heavy saline soil, but a Poisson distribution in sand dunes. 3） The importance values of the dominant species in heavy saline soil are T. elongata 0. 323, Alhagi sparsi folia 0. 215, Phragmites australis 0. 037, Agriophyllure splendens 0. 029, Asparagus persicus 0. 018 4, Poacynum hendersonii 0. 014 and in salt dunes is T. elongata O. 902, A. sparsi folia 0. 193, L. ruthenicum 0. 081 4, P. australis 0. 020, Karelinia caspica 0. 006, and Reaumuria soongorica 0. 001. 4） There are dominant negative inter-specific ecological associations between T. elongata and A. sparsifolia in heavy saline soil but no obvious direct specific ecological association in salt dunes.

关 键 词：长穗柽柳群落 高盐生境 格局 疏勒河中游 

分 类 号：Q949.758.8[生物学—植物学] Q948.158