摘要
选用X^2检验、Pearson检验与Spearman检验,对内蒙古巴音华矿区自然定居植物群落的16个优势种共120个种对的种间关系进行研究,结果表明:16个优势种间大部分种对的种间关联不显著,种间联结松散,优势种糙隐子草、寸草苔与羊草,射干鸢尾、蒲公英与早熟禾之间出现密切正相关关系,分布特征具有地带性,抗旱、抗寒、抗贫瘠能力强,是人工植被恢复的首选物种。Spearman检验将16个优势种分成4个生态组,生态组分化的主导因子是土壤水分条件。
In order to reveal the interspecific associations among dominant species,the interspecific associations among 16 dominant species in natural colonized plant communities on the Bayinhua mining area in Inner Mongolia were studied by using x-2-test,Pearson correlation coefficients and Spearman rank correlation coefficients in the study.The results showed that the correlation associations of most species-pairs among 16 dominant species were not significant and loose,which illustrated that the naturally colonized plant communities on Bayinhua mining area had simple community structures and were still in the early stage of revegetation.The dominant species-pairs of Cleistogenes squarrosa,Carex duriusculaand Leymus chinensis or Belamcanda chinensis,Taraxacum mongolicum and Poa annua showed extremely significantly or significantly positive correlation.They were the zonal distribution of plant species with the strong ecological adaptability of tolerant drought,cold weather and poor soil fertility,which could be mixed planting and used as the pioneer species for local coal gob piles revegetation.Based on Spearman＇s rank correlation coefficients,the 16 dominant species were divided into 4 ecological species groups by cluster analysis.The key factor that caused the differentiation of ecological species groups was soil moisture.
出处
《中国草地学报》
CSCD
北大核心
2017年第5期90-95,共6页
Chinese Journal of Grassland
基金
国家自然科学基金项目"典型草原牧区游牧与定牧方式下的草原群落变迁机制比较研究--以中蒙两国国境线两侧对应嘎查浩特为例"(41561009)
内蒙古自然科学基金项目"内蒙古矿业废弃地土壤环境条件的改善对植被恢复的影响研究"(2014MS0405)
关键词
巴音华矿区
优势种
种间关系
生态种组
Bayinhua mining area
Dominant plant species
Interspecific association
Ecological group
