中国两个气候过渡区森林土壤线虫群落的比较研究

发布时间：2018-06-12 09:10

本文选题：线虫 + 土壤食物网　；参考：《热带亚热带植物学报》2016年02期

【摘要】：为比较不同气候过渡区地带性森林土壤线虫群落结构和多样性,以南亚热带向中亚热带气候过渡区的石门台常绿阔叶林和北亚热带向暖温带气候过渡区的鸡公山落叶阔叶林为样地,探讨不同气候区土壤微食物网能流方式的差异。结果表明,石门台土壤线虫群落属数(S)、生物量(Biomass)、多样性指数(H')、丰富度指数(SR)、成熟度指数(MI)和结构指数(SI)在表层土壤(0~10 cm)均显著高于鸡公山。石门台的土壤线虫通路指数(NCR)均值高于0.5,而鸡公山的NCR均值小于0.5,说明前者土壤食物网可能偏向于细菌能流通道,而后者偏向于真菌能流通道,这也与食细菌线虫、食真菌线虫生物量的计算结果一致。可见线虫群落结构确实存在明显的南北差异,并较好地指示了土壤能流和养分循环状况。
[Abstract]:In order to compare the community structure and diversity of soil nematodes in different climatic transition zones, Taking the evergreen broad-leaved forest of Shimentai and the deciduous broad-leaved forest of Jigongshan mountain in the transitional zone from subtropical to middle subtropical climate as sample plots, the differences of energy flow patterns of soil microfood net in different climatic regions were discussed. The results showed that the soil nematode community in Shimentai was significantly higher than that in Jigongshan (0 ~ 10 cm) of soil nematode community, Biomassa biomass, diversity index (H), richness index (SRN), maturity index (MIM) and structure index (~ 10 cm). The average value of soil nematode pathway index (NCR) in Shimentai is higher than 0.5, while that in Jigongshan is less than 0.5, indicating that the former soil food web may be inclined to the channel of bacterial energy circulation, while the latter is inclined to the fungous channel, which is also similar to that of bacteriophagous nematode. The results of biomass calculation of fungi nematodes were consistent. It can be seen that the community structure of nematodes is different from north to south, and it indicates the energy flow and nutrient cycling of soil.
【作者单位】：中国科学院华南植物园中国科学院退化生态系统植被恢复与管理重点实验室;中国科学院大学;
【基金】：国家自然科学基金项目(31100385;31210103920) NSFC-广东省联合基金项目(U1131001) 中德合作项目(31210103920)资助~~
【分类号】：S714.3

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