东祁连山阴坡高寒灌丛物种多样性变化特征研究  

Study on Characteristics of Species Diversity Change of Alpine Shrub on Shady Slope of Eastern Qilian Mountains

作　　者：杨彪生 Yang Biaosheng(Lanzhou Bowen College of Science and Technology,Lanzhou 730101,China)

机构地区：[1]兰州博文科技学院,甘肃兰州730101

出　　处：《防护林科技》2023年第2期37-39,68,共4页Protection Forest Science and Technology

摘　　要：为探寻坡向对灌丛和草地生长的影响及植物在不同生长条件下的分布规律,以东祁连山阴坡高寒灌丛、高寒草地为研究对象,研究其在6—9月物种多样性变化特征及规律。结果表明:高寒灌丛植被多样性变化指数为7月(0.031)<8月(0.037)<6月(0.042)<9月(0.043),均匀度指数为7月(0.027)<8月(0.034)<6月(0.038)<9月(0.047),丰富度指数为9月(0.339)<7月(0.399)<8月(0.420)<6月(0.439),且在同一时间段3种植被多样性指数为头花杜鹃>千里香杜鹃>绣线菊;高寒草本植被多样性指数为9月(6.133)<7月(6.158)<8月(6.336)<6月(6.599),均匀度指数9月(5.582)<7月(5.605)<8月(5.767)<6月(9.520),丰富度指数6月(0.206)<8月(0.410)<7月(0.418)<9月(0.429)。In order to explore the influence of slope direction on shrub and grassland growth and the distribution rule of plants under different growth conditions, taking alpine shrub and alpine herb on the shady slope of the eastern Qilian Mountains as research objects, this paper studied the characteristics and rules of species diversity variation from June to September. The results showed as follows: alpine scrub vegetation diversity index was July(0.031) < August(0.037) < June(0.042) < September(0.043),evenness index was July(0.027) < August(0.034) < June(0.038) < September(0.047),richness index was September(0.339) < July(0.399) < August(0.420) < June(0.439),and at the same period, the diversity index of three plants was Rhododendron capitatum > Murraya paniculata > Spiraea salicifolia;the alpine herbage diversity index was September(6.133) < July(6.158) < August(6.336) < June(6.599),the evenness index was September(5.582) < July(5.605) < August(5.767) < June(9.520),and the richness index was June(0.206) < August(0.410) < July(0.418) < September(0.429).

关 键 词：东祁连山 物种多样性 高寒灌丛 高寒草地 阴坡 

分 类 号：S718.54[农业科学—林学]