關(guān)帝山森林土壤真菌群落結(jié)構(gòu)與遺傳多樣性特征
[Abstract]:Soil microbial communities drive the biogeochemical cycle of soil carbon, nitrogen, phosphorus and sulfur, and play an important role in maintaining soil carbon sinks and ecosystem functions. Analyzing the role of environment and space factors in soil microbial community construction of cold-temperate coniferous forest can provide theoretical basis for the establishment of regional forest ecosystem management measures. In this paper, Illumina high throughput sequencing technique was used to analyze the Larix principis-rupprechtii forest, green gD (Picea wilsonii) forest, (Pinus tabulaeformis) forest and (Betula spp.) of birch in Pangquanggou Nature Reserve of Guandi Mountain. Structure of five soil fungal communities (Lp MC1,Lp MC2,Pw MC,Pt MC and BMC) in these four forest types. At the same time, the soil environmental factors and the diversity of undergrowth vegetation were measured, and the correlation between the structure of fungal community and vegetation and soil environmental factors was analyzed. The results were as follows: (1) there were 7 phylum fungi and 33 dominant fungi genera in 5 plots; (2) the results of redundancy analysis showed that soil pH, temperature, moisture content, total nitrogen content, NH _ 4 content, total carbon content, sucrase activity, urease activity, total carbon content, urease activity, total nitrogen content, total carbon content, urease activity, total The dominance and evenness of understory vegetation were significantly correlated with the soil fungal community structure. (3) the results of cluster analysis and PCA analysis showed that the forest vegetation types, Soil environmental factors and understory vegetation had significant effects on the structure of soil fungal community. (4) the results of spatial variable (PCNM) analysis showed that diffusion restriction on the local scale (local scale) had no significant effect on the construction of fungal communities in the study region. The community structure of forest soil fungi was mainly selected by environment (soil pH, temperature, moisture content, total nitrogen content NH _ 4 content, total carbon content, sucrase activity, urease activity, dominance and evenness of undergrowth vegetation. Forest type).
【作者單位】: 山西大學(xué)黃土高原研究所;山西財經(jīng)大學(xué)環(huán)境經(jīng)濟學(xué)院;
【基金】:山西省自然科學(xué)基金項目(201601D102054) 國家自然科學(xué)基金青年科學(xué)基金項目(31600308) 山西省回國留學(xué)人員科研資助項目(2012-059)
【分類號】:S714.3
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