草业科学2018，Vol.35Issue(2)：276-285,10.DOI:10.11829/j.issn.1001-0629.2017-0276
山西浊漳河北源湿地草本植物群落优势种生态位与种间关系
Niche and interspecific associations for dominant species in wetland herb communities in the northern branch of the Zhuozhang River Watershed, Shanxi
摘要
Abstract
Based on sample investigations of wetland herb communities in the northern branch of the Zhuozhang River Watershed,we analyzed interspecies relationships and niche characteristics for 16 main species.Important findings were as follows:1) Scirpus triqueter,Polygonum hydropiper,and Cyperus glomeratus showed tendencies of generalized species such as the largest niche breadth among dominant species;2) a niche overlap of 55％ was observed in 0 of 120 species pairs,and lower niche overlap between species indicated weaker interspecific competition;3) Overall association of phytocoenosium was significantly negative correlation at the 0.05 level,the ratios of positive and negative associations in x2-tests and Pearson correlation coefficients were 0.52 and 0.15;therefore,the negative associations were more than the positive associations,and most interspecific associations were not significant,suggesting that wetland herb communities structure is simple,the interaction between species is weak,the communities are still under dynamic succession;4) both association coefficients (AC)and Pearson correlation coefficients indicated niche overlap,with the fitting effect of Pearson correlation coefficient showing a stronger positive association than the AC.To provide a theoretical foundation for ecological restoration in the norther branch of the Zhuozhang River Watershed,this study integrated niche characteristics and interspecific associations to understand the dominant species,their interrelations,dynamic characteristics of the communities and current wetland utilization.关键词
生态位重叠/关联性分析/x2检验/联结系数AC/群落结构/湿地资源/演替Key words
niche overlap/association analysis/x2 tests/association coefficient AC/structure of community/wetland resources/succession分类
农业科技引用本文复制引用
王昱,毕润成,茹文明..山西浊漳河北源湿地草本植物群落优势种生态位与种间关系[J].草业科学,2018,35(2):276-285,10.基金项目
山西省自然科学基金(2010011041-2) （2010011041-2）
