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当前位置: 首页 > 文章 > 围封年限对荒漠草原植物群落组成和结构的影响 黑龙江畜牧兽医 2013 (3) 11-13
Position: Home > Articles > Effect of the year limit of fencing enclosure on composition and structure of plant community in the desert steppe Heilongjiang Animal Science and Veterinary Medicine 2013 (3) 11-13

围封年限对荒漠草原植物群落组成和结构的影响

作  者：
王蕾;许冬梅;张晶晶
单  位：
宁夏草原工作站;宁夏大学农学院
关键词：
围封;荒漠草原;植物群落
摘  要：
为了研究盐池县荒漠草原未围封和围封不同年限草地植物群落组成和结构的变化,试验采用了空间序列代替时间序列的方法进行了调查和研究。结果表明:退化草地实施围栏封育后,植被的群落组成和结构发生了变化;随着围封年限的增加,多年生草本植物的优势地位逐渐增加,一年生草本植物和半灌木的优势地位逐渐降低;草地的产草量和植株的平均高度逐年增加,植物群落的盖度和草群密度在围封5年时达到最高,但随着围封年限的继续延长又有所降低。
译  名：
Effect of the year limit of fencing enclosure on composition and structure of plant community in the desert steppe
作  者：
WANG Lei1,XU Dong-mei2,ZHANG Jing-jing2(1.Grassland Station of Ningxia,Yinchuan 750011,China;2.School of Agricultural,Ningxia University,Yinchuan 750021,China)
关键词：
fencing enclosure;desert steppe;plant community
摘  要：
To study the changes of composition and structure of grassland plant community with different year limts of fencing and unfencing enclosure in the desert steppe of Yanchi,the investigation and research were carried out by using the space-series method instead of the time-series method.The results showed that the composition and structure of plant community had varied after fencing enclosure in the degraded grassland.With the increasing year limits of fencing enclosure,the dominant position of annual herbs and semi-shrubs gradually gave place to perennial herbs.The grass yield and the average height of the plants had increased yearly in the grass land.The vegetation coverage and density in plant community reached a maximum at the 5th year,and then declined somewhat,with the extending year limits of fengcing enclosure.

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