中国草地学报2025，Vol.47Issue(4)：58-66,9.DOI:10.16742/j.zgcdxb.20240149
围封对荒漠草原植物群落的影响
Effects of Enclosure on Plant Community Dynamics in Desert Grasslands
摘要
Abstract
The desert steppe is increasingly affected by severe degradation,and enclosure has been rec-ognized as an effective method for restoring degraded grasslands.Therefore,understanding the effects of enclosure on plant species diversity and aboveground biomass in desert steppes is essential for grassland conservation.This study investigated the effects of different enclosure durations(3 years,13 years,18 years,and 20 years)on plant communitiy characteristics,species diversity,and aboveground biomass in the Siziwang Banner and Zhurihe grasslands.The results showed that aboveground biomass exhibited an increasing trend with extended enclosure duration.The important values of perennial grasses,such as Cleis-togenes songorica and Stipa breviflora,gradually increased,whereas those of degradation indicator spe-cies,including Salsola collina,Convolvulus ammannii,and Neopallasia pectinata,progressively declined,or even disappeared.Vegetation height and canopy coverage increased as enclosure duration extended.In plots enclosed for 13 years,the response ratios of the dominance index,diversity index,rich-ness index,and evenness index reached their peak values.Meanwhile,in plots enclosed for 18 years,aboveground biomass attained its maximum value.A positive correlation was observed between aboveg-round biomass and the response ratio of the diversity index.This study provides scientific evidence for the restoration of desert steppe ecosystems,demonstrating that enclosure measures effectively promote ecosys-tem recovery and enhance vegetation community structure.关键词
围封/荒漠草原/植物多样性/群落结构/重要值/地上生物量Key words
Enclosure/Desert grassland/Plant diversity/Community structure/Important value/Aboveground biomass分类
农业科技引用本文复制引用
刘佳,唐士明,孙崇之,孙兆凯,张桐瑞,孙世贤,乔建霞,吴雪莉,金轲..围封对荒漠草原植物群落的影响[J].中国草地学报,2025,47(4):58-66,9.基金项目
内蒙古自然科学基金(2021MS03081) （2021MS03081）
草原合理放牧利用与固碳增效技术研发(北方中心课题) （北方中心课题）
