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阜康北部梭梭荒漠早春物种多样性研究
Authors
寇思勇
朱宏
+3 more
李君
王丽娟
赵成义
Publication date
1 January 2009
Publisher
Abstract
通过对梭梭荒漠2种植物群落早春的物种组成、垂直结构及物种多样性的对比研究发现:梭梭(Haloxylon ammodendron)群落和白梭梭(Haloxylon persicum)群落具有结构简单、群落优势度高、均匀度和物种多样性较低、旱生性植物占绝对优势及短生植物成为群落重要组成部分等特征。同时,二者存在以下差异:①物种多样性差异, Shannon-Wiener多样性指数、均匀度指数及优势度指数梭梭群落(0.74,0.08和0.81)均高于白梭梭群落(0.61, 0.06和0.77);②主要伴生种不同,前者以草本植物为主要伴生种,后者以灌木为主要伴生种;③短生物种丰富度差异分别占前者的64.7%(11种)及后者的60%(15种)。2种梭梭群落的特点与差异可能与古尔班通古特沙漠南缘早春适宜的水热配置、群落生境的沙土含水量、沙面稳定程度及物种本身的生物学特性等因素有关
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Last time updated on 29/11/2016