ORIGINAL RESEARCH
Ecological Stoichiometric Characteristics of Soil at Different Depths in a Karst Plateau Mountain Area of China
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School of Karst Science, Guizhou Normal University / State Engineering Technology Institute for Karst Decertification Control, Guiyang, P. R. China
 
 
Submission date: 2018-12-18
 
 
Final revision date: 2019-01-10
 
 
Acceptance date: 2019-01-12
 
 
Online publication date: 2019-08-21
 
 
Publication date: 2019-12-09
 
 
Corresponding author
Yanghua Yu   

Guizhou Normal University, China
 
 
Pol. J. Environ. Stud. 2020;29(1):969-978
 
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ABSTRACT
The study of soil ecological stoichiometry has mainly focused on surface soils. Exploring the nutrient content and stoichiometric characteristics of deep soils in karst areas helps us to understand the intrinsic relation mechanism and provides scientific evidence for making full use of fractured soil. We analyzed soil nutrient content, nutrient supply intensity, stoichiometric ratios, and their inter-relations at different soil depths in a karst plateau mountain area of China. Soil nutrient supply capacity was relatively low in the study area. The nitrogen and potassium supply capacity was highest in the surface layer, while phosphorus supply capacity was highest in deep soil. Carbon, nitrogen, phosphorus and potassium made varying contributions to the ecological stoichiometric ratios. Soil nitrogen and phosphorus were found to be deficient in the karst plateau mountain area of China. There was certain coordination between nutrient supply intensity and ecological stoichiometric ratios.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
 
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