干旱区研究2017，Vol.34Issue(5)：1077-1082,6.DOI:10.13866/j.azr.2017.05.16
围栏封育对新疆山地退化草原植物群落特征的影响
Effects of Enclosure on Plant Community Characters of Degenerated Steppe in Xinjiang
摘要
Abstract
As an effective management measure of degenerated steppe,enclosure is widely used in regenerating the degenerated steppes in recent years.The community composition and dynamic change of aboveground biomass under enclosure and uncontrolled-grazing conditions were studied during a 4-year vegetation investigation in a temperate desert steppe in Barkol County,Xinjiang.The results showed that the species diversity and ecological dominance of plant community under enclosure were slightly improved compared with those under uncontrolled-grazing conditions,but the community evenness and richness were slightly decreased although the difference between these two kinds of conditions was at significance level ＜ 5 ％ of T-test (P ＞ 0.05).The dominant species were changed by the enclosure,and they were Stipa glareosa and Artemisia spp.,which revealed the characters of the temperate desert steppe in semiarid area,west China,that means the dominant position of S.glareosa and A.spp under uncontrolled-grazing conditions was changed.The average height and aboveground biomass under enclosure were improved.Compared with the situation under uncontrolled-grazing conditions,the aboveground biomass of plant community was significantly increased with the time,but the grass yield of the temperate desert steppe could not be reached to the highest level by a 4-year enclosure,and the difference of diversity index of plant community between the enclosure and uncontrolled-grazing conditions was not significantly.关键词
山地/退化草原/围栏封育/自由放牧/植物群落/物种多样性/新疆Key words
degenerated steppe/enclosure/uncontrolled grazing/plant community/species diversity/Xinjiang引用本文复制引用
刘秀梅,李小锋..围栏封育对新疆山地退化草原植物群落特征的影响[J].干旱区研究,2017,34(5):1077-1082,6.基金项目
新疆巴里坤2008年退牧还草项目资助 （）
