草业学报2025，Vol.34Issue(1)：1-16,16.DOI:10.11686/cyxb2024078
宁东煤炭基地排矸场人工植物群落优势种生态位和种间关系研究
Niche and interspecific association of dominant plant species in artificial plant communities,the coal gangue dump of the Ningdong coal base,Middle East Ningxia
摘要
Abstract
Ecological restoration is an important part of mining operations.The aim of this study was to analyze the plant community at the initial stage of ecological restoration in the gangue yard at the Ningdong coal base,with an overall goal to establish a stable artificial vegetation ecosystem on the coal gangue hills.The aboveground vegetation was sampled using a quadrat method,and the importance values of shrubs and grasses were calculated.The niche width,niche similarity,niche overlap,and variance ratio were calculated.Chi-squared and Spearman's correlation analyses were used to explore the interspecific associations among,and correlations between,dominant species in the plant community in the mining area.The results showed that there were 44 species of shrubs and grasses in the study area,belonging to nine families and 36 genera.The main plant families were Poaceae,Fabaceae,Asteraceae,and Amaranthaceae.The niche width and importance value rankings of shrub species were not completely consistent,but the overall trend was consistent,with Oxytropis aciphylla and Caragana korshinskii being the dominant species.The niche width and importance value rankings of herbaceous species were consistent,with Grubovia dasyphylla and Medicago sativa being the dominant species.The variance ratio of the overall association between shrubs and herbaceous plants was greater than one.There was a significant positive association among shrub species,whereas the association among herbaceous species was not significant.In conclusion,the plant community in the ecological restoration area is in the early or middle stage of succession,with weak interspecific competition.When designing an ecological restoration strategy for the Ningdong coal base,plants positively associated with dominant species should be selected to form a stable plant community structure,thereby improving the efficiency of ecological restoration in this mining area.关键词
生态位/种间关系/优势植物种/排矸场/宁东Key words
niche/interspecific association/dominant plant species/gangue dump/Ningdong引用本文复制引用
侯晓磊,武春丽,邓雅元,麻文章,赵廷宁,曾文杰,巩子涵,芦治源,吴国伟..宁东煤炭基地排矸场人工植物群落优势种生态位和种间关系研究[J].草业学报,2025,34(1):1-16,16.基金项目
宁夏回族自治区重点研发计划(2022BEG02001)资助. （2022BEG02001）
