中国草地学报2025，Vol.47Issue(2)：30-38,9.DOI:10.16742/j.zgcdxb.20240171
内蒙古荒漠草原植物群落对枯落物添加的响应
Response of Plant Communities to Litter Addition in Desert Steppe of Inner Mongolia
摘要
Abstract
In order to explore the effects of litter on the plant community characteristics and functional groups of desert steppe,this research focused on Stipa breviflora desert steppe in Inner Mongolia.A field control litter experiment(including no addition(CK),adding 83.3 g/m2 litter,and adding 166.6 g/m2)was conducted on degraded steppe under overgrazing for more than a decade.The results showed that the addition of litter improved community height,coverage,density and aboveground biomass under the adding 83.3 g/m2 litter treatment,and the community height,coverage and aboveground biomass increased signifi-cantly by 2 cm,3%and 9 g/m2,respectively.Plant community indices such as Simpson dominance index,Shannon-Wiene diversity index,Pielou evenness index and Margalef richness index were also increased sig-nificantly.The addition of litter enhanced the competition of perennial bunch grasses between perennial rhi-zome grasses and perennial forbs.Plants adapted to the environmental changes by altering the occupancy ratio of the functional groups.The addition of 83.3 g/m2 litter had a more significant effect on plant commu-nity of the desert steppe.In conclusion,the input of appropriate amount of litter can help the recovery of degraded grassland by influencing the diversity of the community and the relationship between functional groups to promote the positive growth of grassland.关键词
枯落物/荒漠草原/群落/功能群/植物多样性Key words
Litter/Desert steppe/Plant communities/Functional groups/Plant diversity分类
农业科技引用本文复制引用
杨建庆,王静,李治国,那亚,王忠武,韩国栋..内蒙古荒漠草原植物群落对枯落物添加的响应[J].中国草地学报,2025,47(2):30-38,9.基金项目
内蒙古自治区自然科学基金项目(2022MS03067) （2022MS03067）
国家自然科学基金项目(31360112,32060384) （31360112,32060384）
