Functional Soil Organic Matter Fractions, Microbial Community, and Enzyme Activities in a Mollisol Under 35 Years Manure and Mineral Fertilization
文献类型： 外文期刊
作者： Yang, Fan 1 ; Tian, Jing 1 ; Fang, Huajun 4 ; Gao, Yang 4 ; Xu, Minggang 7 ; Lou, Yilai 8 ; Zhou, Baoku 9 ; Kuzyakov, Yak 1 ;
作者机构： 1.China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China
2.China Agr Univ, Natl Acad Agr Green Dev, Beijing 100193, Peoples R China
3.China Agr Univ, Key Lab Plant Soil Interact, Minist Educ, Beijing 100193, Peoples R China
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
5.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Elus & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
6.Minist Water Resources, Yangling 712100, Peoples R China
7.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Natl Engn Lab Improving Qual Arable Land, Beijing 100081, Peoples R China
8.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China
9.Heilongjiang Acad Agr Sci, Inst Soil Fertilizer & Environm Resources, Haerbin 150086, Peoples R China
10.Univ Gottingen, Dept Soil Sci Temperate Ecosyst, Dept Agr Soil Sci, D-37077 Gottingen, Germany
11.Kazan Fed Univ, Inst Environm Sci, Kazan 420049, Russia
12.RUDN Univ, Agrotechnol Inst, Moscow 117198, Russia
关键词： Long-term fertilization; Soil organic matter fractions; Soil aggregation; Microbial community composition; Enzyme activities
期刊名称：JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION （ 影响因子：3.872； 五年影响因子：3.771 ）
ISSN： 0718-9516
年卷期： 2019 年 19 卷 2 期
页码：
收录情况： SCI
摘要： Fertilization is a worldwide practice to maintain and increase crop productivity and improve soil quality in agricultural ecosystems. The interactive mechanisms of long-term fertilization affecting the functional soil organic matter (SOM) fractions, microbial community, and enzyme activities are unclear. We investigated the effects of manure and mineral fertilization on six SOM fractions (non-protected, physically, chemically, biochemically, physical-chemically, and physical-biochemically protected), microbial community structure, and enzyme activities based on a 35-year fertilization experiment. The combined application of manure and mineral fertilizers (NPKM) increased the soil organic carbon (SOC) and total nitrogen (TN) in the biochemically (28.6-43.9%) and physically (108-229%) protected fractions, compared to their content in the unfertilized soil (CK). The total phospholipid fatty acid content, Gram(-) bacteria, and actinomycetes, as well as the activities of alpha-1,4-glucosidase, beta-1-4-N-acetylglucosaminidase, beta-1,4-xylosidase, and cellobiohydrolase were highest under NPKM fertilization. The protected SOM fractions (physical, biochemical, physical-chemical, and physical-biochemical) were closely related to microbial community composition (accounting for 67.6% of the variance). Bacteria were sensitive to changes in the physically and biochemically protected fractions, whereas fungi responded more to the changes in the chemically protected fraction. In summary, long-term mineral and organic fertilization has a strong effect on microbial communities and activities through the changes in the functional SOM fractions.
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