乌伊岭自然保护区沼泽湿地土壤线虫分布及影响因子  

Distribution and Influencing Factors of Nematodes in Marsh Wetland of Wuyiling Nature Reserve

作　　者：董小琪 

机构地区：[1]哈尔滨师范大学地理科学学院,黑龙江 哈尔滨

出　　处：《自然科学》2024年第2期396-404,共9页Open Journal of Nature Science

摘　　要：半个世纪来大面积排水造田使沼泽湿地面积急剧缩减,乌伊岭自然保护区作为生态屏障具有其特殊地位,因此探讨乌伊岭地区不同沼泽湿地及土壤深度线虫分布特征并分析其影响因子具有重要意义。结果表明:各沼泽湿地共有优势类群为具脊垫刃属(Coslenchus),各沼泽湿地土壤线虫特有类群较多,而各土壤深度线虫共有类群较多。森林沼泽湿地土壤线虫数量显著高于草甸和灌丛(P < 0.05),不同土壤深度在数量和类群上有显著差异(P < 0.05),且呈明显表聚性。土壤深度对线虫多样性、优势度和丰富度指数变化具有极显著影响(P < 0.001),沼泽湿地类型对植物寄生线虫和食细菌线虫有极显著影响(P < 0.001)。全磷和土壤有机碳是影响土壤线虫属的重要因素。In the past half century, the area of marsh wetland has been drastically reduced by large-scale drainage and farmland construction. Wuyiling Nature Reserve has its special status as an ecological barrier. Therefore, it is of great significance to explore the distribution characteristics of nematodes in different marsh wetlands and soil depths in Wuyiling area and analyze their influencing factors. The results showed that Coslenchus was the common dominant group of nematodes in each marsh wetland, and there were more nematodes in each marsh wetland soil, and more nematodes in each soil depth. The number of nematodes in forest marsh soil was significantly higher than that in meadow and shrub (P < 0.05), and there were significant differences in the number and groups of nematodes in different soil depths (P < 0.05), and the nematodes showed obvious super aggregation. Soil depth had significant effects on nematode diversity, dominance and richness index (P < 0.001), and marsh wetland type had significant effects on plant parasitic nematode and bacteria-eating nematode (P < 0.001).

关 键 词：沼泽湿地 土壤深度 土壤线虫 

分 类 号：S43[农业科学—农业昆虫与害虫防治]