Journal article
Biochar influences soil carbon pools and facilitates interactions with soil: A field investigation
Land Degradation & Development, Vol.29(7), pp.2162-2171
07/2018
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Abstract
Biochar promotes the storage of organic carbon (OC) in soils. OC is unevenly distributed in soils among different particle-size fractions showing different structures, functions, and stability. The objective of this study was to investigate the biochar–soil interactions and the redistribution of soil C in different soil fractions based on a 2-year field experiment. Fractionation was done by particle sizes including coarse sand (250–2,000 μm), fine sand (53–250 μm), and silt/clay (<53 μm). Integrated spectroscopic techniques were employed to examine physical characteristics of biochar–soil interactions in different soil fractions. Application of biochar increased OC by 37%, 42%, and 76% in soil particle-size fractions of 53–250, <53, and 250–2,000 μm, respectively. This was supported by X-ray fluorescence spectroscopy analysis, which showed an increase of C contents by 5–56% with biochar addition. The highest increment in OC was found in coarse sand fraction, and redistribution of OC was detected depending on various soil particle sizes. Results of scanning electron microscopy combined with electron dispersive X-ray spectroscopy analysis showed the interactions between soil and biochar, which could be attributed to oxidized functional groups (O―C=O, C=O, and C―O) captured by the X-ray photoelectron spectroscopy. The long-term aged biochar could be beneficial to enhance soil quality by promoting OC storage and facilitating positive biochar–soil interactions.
Details
- Title
- Biochar influences soil carbon pools and facilitates interactions with soil: A field investigation
- Creators
- Ali El‐Naggar - Kangwon National UniversityYasser M Awad - Kangwon National UniversityXiang‐Yu Tang - Chinese Academy of SciencesChen Liu - Chinese Academy of SciencesNabeel Khan Niazi - University of Agriculture FaisalabadShih‐Hao Jien - University of BremenDaniel C.W Tsang - Hong Kong Polytechnic University (The)Hocheol Song - Sejong UniversityYong Sik Ok - Korea UniversitySang Soo Lee - Yonsei University
- Publication Details
- Land Degradation & Development, Vol.29(7), pp.2162-2171
- Publisher
- John Wiley & Sons Ltd.
- Number of pages
- 10
- Grant note
- National Key Research and Development Plan of China. Grant Number: 2016YFD0800203 National Research Foundation of Korea (NRF). Grant Numbers: NRF-2016R1C1B2006336, NRF-2015R1A2A2A11001432
- Identifiers
- 991012951192702368
- Copyright
- Copyright © 2018 John Wiley & Sons, Ltd.
- Academic Unit
- Science; Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article