Saprotrophic fungal communities in arable soils are strongly associated with soil fertility and stoichiometry
文献类型： 外文期刊
作者： Ning, Qi 1 ; Chen, Lin 1 ; Zhang, Congzhi 1 ; Ma, Donghao 1 ; Li, Daming 3 ; Han, Xiaori 4 ; Cai, Zejiang 5 ; Huang, Shao 1 ;
作者机构： 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Fengqiu Expt Stn Natl Ecosyst Res Network China, Nanjing 210008, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Jiangxi Inst Red Soil, Jinxian 331717, Peoples R China
4.Shenyang Agr Univ, Coll Land & Environm, Shenyang 110866, Peoples R China
5.Chinese Acad Agr Sci, Qiyang Agroecosyst Natl Field Expt Stn, Qiyang 426182, Peoples R China
6.Henan Acad Agr Sci, Inst Plant Nutr & Environm Resources Sci, Zhengzhou 450002, Peoples R China
关键词： Fertilization; Saprotrophic fungi; Soil fertility; Soil stoichiometry
期刊名称：APPLIED SOIL ECOLOGY （ 影响因子：4.046； 五年影响因子：4.884 ）
ISSN： 0929-1393
年卷期： 2021 年 159 卷
页码：
收录情况： SCI
摘要： The importance of soil saprotrophic fungi in agroecosystems is receiving increasing attention. However, the linkages between saprotrophic fungal communities and soil fertility and stoichiometry in agroecosystems are poorly understood. Here, four long-term field fertilization experiments with three treatments (i.e., no fertilizer (control), chemical nitrogen (N), phosphorus (P), and potassium (K) fertilizer (NPK), chemical combined with organic fertilizer (NPKM)) were performed to evaluate the associations of saprotrophic fungal communities with the soil fertility index (SFI) and stoichiometric carbon (C):N:P ratios. Long-term NPKM application increased the SFI by 57.66%-129.50% at the four sites, and the SFI was strongly correlated with the saprotrophic fungal community composition, which indicated that exogenous organic matter improved soil fertility to a large extent and stimulated the growth of saprotrophic fungi in arable soils. The soil C:P and N:P ratios were notably decreased in the fertilization treatment, indicated that P was sufficient. Further, the composition of saprotrophic fungi was significantly related to the C:N and N:P ratios, suggested that N status is an important factor for soil saprotrophic fungal communities. Our study provides empirical evidence that the saprotrophic fungal communities in arable soils are strongly associated with soil fertility and stoichiometry and offers guidance for improving soil fertility by regulating the saprophytic fungal community.
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