摘要
戈壁生态系统脆弱,一旦破坏很难恢复。山丹县北部戈壁灌木林是县域南部绿洲农牧区重要的生态屏障,规划为生态公益林区。样线样方结合法调查山丹县北部戈壁灌木林封育成效。结果表明,山丹县北部戈壁分布有11种灌木;分布有7种灌木群丛,珍珠猪毛菜群丛为典型戈壁灌木林的基本群落,随着局域性盐碱化、沙化或向山地过渡被盐爪爪、蒙古扁桃、鲜黄小檗群丛代替,或组成双优群丛;灌木层盖度与戈壁类型、地形和坡度关系密切,而与海拔相关不大;超过半数灌木群落达到成林标准,基本分布于典型戈壁。总之,山丹县北部公益林区戈壁灌木林封育成效比较显著。
The Gobi ecosystem is fragile and difficult to recover once damaged.The northern Gobi of Shandan county is an important ecological barrier for the southern oasis agricultural and pastoral area,which is planned as an ecological public welfare forest area.Investigation on the effect of shrubbery in the northern Gobi by sample and line sample in Shandan county.The results showed that there were 11 shrub species in the northern Gobi of Shandan county.There are 7 kinds of shrub group,Salsola passerina group is the basic community of the typical Gobi shrub forest,with the local salinization,desertification or transition to the mountain was replaced by the Kalidium foliatum,Amygdalus mongolica,Berberis diaphana,or formed double superior group;Shrub cover was closely related to Gobi type,topography and slope,but not to elevation.More than half of the shrub communities reached the standard of mature forest,and basically distributed in the typical Gobi.In a word,the effect of Gobi shrub enclosure in Shandan county northern public forest area is remarkable.
作者
司健
SI Jian(Forestry Technical Workstation of Shandan County,Shandan Gansu 734100,China)
出处
《甘肃林业科技》
2021年第2期35-39,共5页
Journal of Gansu Forestry Science and Technology
关键词
戈壁类型
灌木林
封育
灌木层盖度
Gobi type
shrub
cultivating
shrub layer coverage
