摘要
通过对甘肃引黄灌区典型天然植被群落调查,研究了主要种群的分布特征。结果表明:(1)甘肃引黄灌区主要天然群落内典型的种群有猫头刺、白刺和油蒿;(2)3个不同种群立地条件和土壤特征差异显著,油蒿种群为固定沙丘,猫头刺种群为固定、半固定沙丘,白刺种群为半固定沙丘,其pH值和全盐量从高至低依次为:白刺、猫头刺、油蒿;(3)研究区共有植物种29种,隶属10个科26个属,其中灌木或小灌木5种,占植物种数的17.24%;(4)研究区植被整体表现出了结构简单,灌木层物种相对单一且数量较少,草本层物种相对丰富且数量较大的特征。
Through investigation on typical natural vegetation communities in Yellow River Irrigation Area in Gansu Province,the distribution characteristics of the main population were studied. Result shows that： （1） the typical population of main natural populations in Yellow River Irrigation Area are Oxytropis aciphylla, Nitraria tangutorum ＆ Artemisia ordosica;（2） site conditions ＆ soil characteristics of three different populations are significantly different,Artemisia ordosica being fixed dunes, Oxytropis aciphylla being fixed ＆ semi-fixed sand dunes, popula- tion of Nitraria tangutorum being semi-fixed sand dunes;its pH value ＆ total salt from high to low is as follows： Nitraria tangutorum ,Oxytropis aciphylla ,Artemisia ordosica ＆ （3） there are 29 plant species in the study area, belonging to 10 families and 26 genera,of which five kinds of shrubs or small shrubs,accounting for 17.24% of plant species ; （4） the vegetation in study area shows characteristics of simple structure, single ＆ fewer species in shrub layer,larger number of species ＆ relative abundance in herbaceous layer.
出处
《防护林科技》
2013年第10期1-2,12,共3页
Protection Forest Science and Technology
基金
甘肃省技术开发专项(1004TCYA011)
甘肃省农业科技成果转化资金项目(1105NCNA100)
关键词
甘肃引黄灌区
天然群落
优势种群
重要值
the Yellow River Irrigation Area in Gansu Province
natural communities
dominant species
important value
