Factors driving the carbon mineralization priming effect in a sandy loam soil amended with different types of biochar

Cely Parra, Paola Andrea and Tarquis Alfonso, Ana Maria and Paz Ferreiro, Jorge and Méndez, Ana and Gascó, Gabriel (2014). Factors driving the carbon mineralization priming effect in a sandy loam soil amended with different types of biochar. "Solid Earth", v. 5 ; pp. 585-594. ISSN 1869-9537. https://doi.org/10.5194/se-5-585-2014.

Description

Title: Factors driving the carbon mineralization priming effect in a sandy loam soil amended with different types of biochar
Author/s:
  • Cely Parra, Paola Andrea
  • Tarquis Alfonso, Ana Maria
  • Paz Ferreiro, Jorge
  • Méndez, Ana
  • Gascó, Gabriel
Item Type: Article
Título de Revista/Publicación: Solid Earth
Date: June 2014
ISSN: 1869-9537
Volume: 5
Subjects:
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Edafología [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The effect of biochar on the soil carbon mineral- ization priming effect depends on the characteristics of the raw materials, production method and pyrolysis conditions. The goal of the present study is to evaluate the impact of three different types of biochar on physicochemical properties and CO2 emissions of a sandy loam soil. For this purpose, soil was amended with three different biochars (BI, BII and BIII) at a rate of 8 wt % and soil CO2 emissions were measured for 45 days. BI is produced from a mixed wood sieving from wood chip production, BII from a mixture of paper sludge and wheat husks and BIII from sewage sludge. Cumulative CO2 emissions of biochars, soil and amended soil were well fit to a simple first-order kinetic model with correlation coef- ficients (r 2 ) greater than 0.97. Results show a negative prim- ing effect in the soil after addition of BI and a positive prim- ing effect in the case of soil amended with BII and BIII. These results can be related to different biochar properties such as carbon content, carbon aromaticity, volatile matter, fixed carbon, easily oxidized organic carbon or metal and phenolic substance content in addition to surface biochar properties. Three biochars increased the values of soil field capacity and wilting point, while effects over pH and cation exchange capacity were not observed.

More information

Item ID: 35492
DC Identifier: https://oa.upm.es/35492/
OAI Identifier: oai:oa.upm.es:35492
DOI: 10.5194/se-5-585-2014
Official URL: http://www.solid-earth.net/5/585/2014/se-5-585-2014.html
Deposited by: Memoria Investigacion
Deposited on: 01 Jun 2015 11:51
Last Modified: 01 Jun 2015 11:51
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