武威市北部典型荒漠植物群落物种组成及多样性特征分析  

Analysis of Species Composition and Diversity Characteristics of Typical Desert Plant Communities in the Northern Region of Wuwei City

作　　者：戴建昊 裴紫璇 DAI Jian-hao;PEI Zi-xuan(Wuwei Forestry Integrated Service Center,Wuwei,Gansu 733000;Gulang County Afforestation Work Guidance Station,Gulang,Gansu 733100)

机构地区：[1]武威市林业综合服务中心,甘肃武威733000 [2]古浪县绿化工作指导站,甘肃古浪733100

出　　处：《陕西林业科技》2024年第4期12-15,共4页Shaanxi Forest Science and Technology

基　　金：基于土壤水分平衡原理的大规模防沙治沙技术模式研究(WW2201RPZ027);武威市科学技术局项目(WW2101064)。

摘　　要：为了揭示武威市北部沙区典型荒漠植物群落多样性特征,本研究采用Simpson指数、Pielou均匀度指数和Patrick物种丰富度指数法,测定武威市北部典型荒漠植被群落物种组成、结构及生长指标,分析了武威市典型植物群落结构及物种多样性特征。结果表明:(1)武威市北部典型荒漠植物群落结构单一,物种组成稀少,充分体现了荒漠植被群特征。(2)武威市北部典型荒漠植物群落有灌木半灌木层和草本层组成,其中出现灌木种,多年生草本种。(3)典型荒漠植物群落物种多样性程度低。(4)生境条件决定了群落物种组成及生物多样性特征,以盐爪爪群落和沙蒿为主的群落生境条件较差,物种组成少,多样性指数高,而砾质戈壁上以红砂为代表的群落物种组成丰富,多样性指数高。因此,生境条件决定了群落物种组成及数量特征。This study analyzed the structure and species diversity characteristics of typical plant communities in the northern region of Wuwei City by measuring the species composition,structure,and growth indicators of the typical desert vegetation communities.The results showed that:(1)The typical desert plant communities in the northern region of Wuwei exhibited a simple structure with scarce species composition,fully reflecting the characteristics of desert vegetation communities.(2)The typical desert plant communities in the northern region of Wuwei consisted of shrub/semi-shrub layers and herbaceous layers,with shrub species and perennial herbaceous species present.(3)The species diversity level in the typical desert plant communities was low.(4)Habitat conditions determined the species composition and biodiversity characteristics of the communities.Communities dominated by saltbush(Kalidium foliatum)and wormwood(Artemisia desertorum)had poor habitat conditions,resulting in fewer species and higher diversity indices.In contrast,communities represented by red sand-verbena(Reaumuria soongorica)on gravel gobi had richer species composition and higher diversity indices.Therefore,habitat conditions play a decisive role in determining the species composition and quantitative characteristics of plant communities.

关 键 词：武威市北部 典型荒漠植物 群落结构 物种多样性 

分 类 号：Q948.2[生物学—植物学]