生态环境学报2025，Vol.34Issue(10)：1558-1568,11.DOI:10.16258/j.cnki.1674-5906.2025.10.006
西藏雅尼湿地洲滩植物群落优势种生态位及种间联结性
Niche and Interspecific Association of Plant Communities in the Yani Wetland Shoals
摘要
Abstract
This study aimed to elucidate the niche characteristics and interspecific associations of plant communities in the floodplain of the Yani Wetland in Xizang,providing a scientific basis for ecological restoration and biodiversity conservation in typical high-altitude riverine wetlands.Based on the plot survey data,the niche breadth and overlap of the dominant species were measured.Variance ratio(VR),chi-square test,association coefficient(Ac),and Spearman correlation analysis were employed to examine the niche and interspecific associations among 15 dominant plant species in the floodplain plant communities of the Yani Wetland.The results showed that 67 plant species were recorded in the Yani Wetland plant communities,belonging to 57 genera and 26 families,primarily from the Compositae,Poaceae,and Cyperaceae.Among them,Orinus thoroldii,Myricaria wardii,and Salix cheilophila exhibited high importance values and niche breadth,occupying dominant positions in the competition within their community.The overall niche overlap values were low,indicating limited similarity in environmental resource utilization among species,with interspecific competition tending toward equilibrium,which suggest mid-stage natural succession.The overall interspecific association showed a significant positive correlation between these two species.However,the χ2 test,Ac values,and Spearman correlation analysis revealed mostly non-significant associations among species,indicating relatively weak interspecific relationships between them.Regression analysis demonstrated a highly significant positive correlation between the Spearman rank correlation coefficients and Ac values of the dominant species,and their niche overlap and niche similarity coefficients.Therefore,in the natural vegetation restoration of this river valley region,priority should be given to planting species with broad niches and strong adaptability in complementary combinations to restore community stability.关键词
雅尼湿地/优势种/生态位/种间联结/回归分析Key words
Yani wetland/dominant species/ecological niche/interspecific association/regression analysis分类
农业科技引用本文复制引用
阿旺罗布,王俊伟,曾哲飞,李伟,闹增措,谭鑫,拉琼..西藏雅尼湿地洲滩植物群落优势种生态位及种间联结性[J].生态环境学报,2025,34(10):1558-1568,11.基金项目
国家自然科学基金项目(31760127) （31760127）
生态学一流学科建设项目(00060906-01 （）
00060835/001) （）
西藏自治区科技计划项目(XZ202303ZY0002G) （XZ202303ZY0002G）
西藏自治区科技重大专项(XZ202402ZD0005) （XZ202402ZD0005）
