秦岭火地塘真菌群落海拔分布格局

doi:10.13287/j.1001-9332.202107.033

应用生态学报 ›› 2021, Vol. 32 ›› Issue (7): 2589-2596.doi: 10.13287/j.1001-9332.202107.033

秦岭火地塘真菌群落海拔分布格局

周煜杰^1,3, 贾夏^2,3,4, 赵永华^1,3,4*, 陈南南¹, 闫瑾¹, 汤剑秋¹, 王茜¹, 刘黎¹

¹长安大学土地工程学院, 西安 710054;
²长安大学水利与环境学院, 西安 710054;
³陕西省土地整治重点实验室, 西安 710054;
⁴自然资源部退化及未利用土地整治工程重点实验室, 西安 710054

收稿日期:2020-09-21 修回日期:2021-03-10 出版日期:2021-07-15 发布日期:2022-01-15
通讯作者: *yonghuaz@chd.edu.cn
作者简介:周煜杰,男,1994年生,博士研究生.主要从事土壤微生态研究.E-mail:1035265756@qq.com
基金资助:
国家自然科学基金项目(31670549)、长安大学研究生科研创新实践项目(3300103703019)和中央高校基本科研项目(300102270206, 300102351730)

Altitude distribution of fungal community in Huoditang in Qinling Mountains, Northwest China

ZHOU Yu-jie^1,3, JIA Xia^2,3,4, ZHAO Yong-hua^1,3,4*, CHEN Nan-nan¹, YAN Jin¹, TANG Jian-qiu¹, WANG Xi¹, LIU Li¹

¹College of Land Engineering, Chang'an University, Xi'an 710054, China;
²College of Water and Environment, Chang'an University, Xi'an 710054, China;
³Shaanxi Key Laboratory of Land Consolidation, Xi'an 710054, China;
⁴Key Laboratory of Degra-ded and Unused Land Consolidation Engineering, Ministry of Natural and Resources, Xi'an 710054, China

Received:2020-09-21 Revised:2021-03-10 Online:2021-07-15 Published:2022-01-15
Contact: *yonghuaz@chd.edu.cn
Supported by:
National Natural Science Foundation of China (31670549)，the Scientific Innovation Practice Pro-ject of Postgraduates of Chang' an University (3300103703019)，and the Fundamental Research Funds for the Central Universities (300102270206,300102351730).

摘要/Abstract

摘要： 土壤真菌在自然生态系统的养分循环和土壤碳储存方面起重要作用。秦岭火地塘林区在不同海拔分布着不同的优势树种,但其相应的土壤特征及微生物群落的海拔分布格局仍不明晰。本研究分析了5个海拔处(1500、1700、1900、2100和2300 m)的土壤特征变化趋势,并在高通量测序基础上研究了真菌群落格局。结果表明: 土壤有效磷含量、pH值随海拔的增加而显著增加,土壤水分则呈下降趋势。土壤真菌Shannon多样性指数随海拔升高呈下降趋势,而ACE丰度指数相反;真菌优势门为担子菌门(68.2%)、子囊菌门(19.8%)和球囊菌门(1.7%),且随海拔升高整体呈现出“U”型或“单峰”变化格局;真菌优势纲为伞菌纲(64.2%)、粪壳菌纲(5.8%)和锤舌菌纲(4.1%)。冗余分析(RDA)表明,土壤特性解释了土壤真菌群落总变异的89.1%,其中土壤有效磷含量、pH和海拔是土壤真菌群落海拔梯度变化的主要驱动因子。在秦岭火地塘林区,土壤特征在海拔梯度上的差异性影响了土壤真菌群落组成。

关键词: 海拔梯度, 秦岭, 真菌群落, 土壤特征

Abstract: Soil fungi play an important role in soil nutrient cycling and carbon storage in natural ecosystems. Dominant tree species showed altitude distribution in Huoditang forest in Qinling Mountains, whereas the corresponding changes of soil characteristics and microbial communities are still unclear. In this study, the variations of soil characteristics were investigated at five altitudes (1500, 1700, 1900, 2100 and 2300 m). The collected soil samples were sequenced by Illumina MiSeq sequencing platform, and the pattern of fungal community was studied. The results showed that soil available phosphorus concentration (AP) and soil pH increased significantly whereas soil moisture showed a downward trend with increasing altitude. The Shannon diversity index of soil fungi decreased and ACE richness index showed an opposite trend with increasing altitude. Basidiomycota (68.2%), Ascomycota (19.9%), and Mortierellomycota (1.7%) were dominant fungal phyla, which showed a ‘U' shape or ‘peak' pattern according to altitude. Agaricomycetes (64.2%), Sordariomycetes (5.8%), and Leotiomycetes (4.1%) were the dominant fungal classes. Results of redundancy analysis (RDA) showed that 89.1% of the total variations of soil fungal community were explained by soil characteristics, while AP, pH and altitude were the main driving factors for altitude variations of soil fungal communities. Soil characteristics had certain differences with altitude changes in Huoditang forest region in Qinling Mountains, which affected soil fungal community composition.

Key words: altitude gradient, Qinling Mountains, fungal community, soil characteristics

周煜杰, 贾夏, 赵永华, 陈南南, 闫瑾, 汤剑秋, 王茜, 刘黎. 秦岭火地塘真菌群落海拔分布格局[J]. 应用生态学报, 2021, 32(7): 2589-2596.

ZHOU Yu-jie, JIA Xia, ZHAO Yong-hua, CHEN Nan-nan, YAN Jin, TANG Jian-qiu, WANG Xi, LIU Li. Altitude distribution of fungal community in Huoditang in Qinling Mountains, Northwest China[J]. Chinese Journal of Applied Ecology, 2021, 32(7): 2589-2596.

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秦岭火地塘真菌群落海拔分布格局

Altitude distribution of fungal community in Huoditang in Qinling Mountains, Northwest China

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