Carbon, nitrogen, and phosphorus stoichiometry mediate sensitivity of carbon stabilization mechanisms along with surface layers of a Mollisol after long-term fertilization in Northeast China

Purpose Soil organic carbon (SOC) is an important parameter determining soil fertility and sustaining soil health. How C, N, and P contents and their stoichiometric ratios (C/N/P) regulate the nutrient availability, and SOC stabilization mechanisms have not been comprehensively explored, especially...

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Bibliographic Details
Published in:Journal of soils and sediments 2021-02, Vol.21 (2), p.705-723
Main Authors: Abrar, Muhammad Mohsin, Xu, Hu, Aziz, Tariq, Sun, Nan, Mustafa, Adnan, Aslam, Muhammad Wajahat, Shah, Syed Atizaz Ali, Mehmood, Khalid, Zhou, Baoku, Ma, Xingzhu, Chen, Xianni, Xu, Minggang
Format: Article
Language:English
Subjects:
Agricultural land
Agricultural practices
Biological fertilization
Carbon
Crop rotation
Cropping systems
Deep layer
Depth
Earth and Environmental Science
Environment
Environmental Physics
Farmyard manure
Fertility
Fertilization
Fertilizer application
Fertilizers
Manures
Microorganisms
Mineral fertilizers
Nitrogen
Nutrient availability
Organic carbon
Organic soils
Phosphorus
Ratios
Regression analysis
Sec 1 • Soil Organic Matter Dynamics and Nutrient Cycling • Research Article
Soil
Soil fertility
Soil investigations
Soil layers
Soil Science & Conservation
Soil stabilization
Soils
Soybeans
Stabilization
Stoichiometry
Subsoils
Surface layers
Topsoil
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Summary:Purpose Soil organic carbon (SOC) is an important parameter determining soil fertility and sustaining soil health. How C, N, and P contents and their stoichiometric ratios (C/N/P) regulate the nutrient availability, and SOC stabilization mechanisms have not been comprehensively explored, especially in response to long-term fertilization. The present study aimed to determine how the long-term mineral and manure fertilization influenced soil C/N/P ratios and various protection mechanisms underlying the stabilization of OC along with profile in a cropland soil. Materials and methods The soil was sampled from five depths, viz., 0–20 cm, 20–40 cm, 40–60 cm, 60–80 cm, and 80–100 cm, from plots comprising wheat-maize-soybean rotation system subjected to the long-term (35 years) manure and mineral fertilizer applications. Results and discussion Results revealed that the soil C, N, P stoichiometry and their contents in topsoil depths (0–20 and 20–40 cm) and subsoil depths (40–60, 60–80, and 80–100 cm) varied significantly ( p  
ISSN:1439-0108
1614-7480
DOI:10.1007/s11368-020-02825-7