Cited by 128Soil Carbon and Nitrogen DynamicsSoil and Unsaturated FlowSoil Management and Crop Yield

Effects of biochar amendment on soil thermal conductivity, reflectance, and temperature

Zhang, Qingzhong, Wang, Yiding, Wu, Yongfeng, Wang, Xiahui, Du, Zhangliu, Liu, Xingren, Song, Jiqing·2013·Soil Science Society of America Journal

Abstract

Little information is available regarding the effects of biochar amendment on soil thermal properties and soil temperature, especially under field conditions. The possible changes in soil thermal conductivity, surface reflectance, and temperature resulting from biochar addition might affect other biophysical–chemical processes in the soil. We examined the effects of biochar amendment on the thermal conductivity, surface reflectance, and temperature of soil. Soil thermal conductivity, reflectance, and temperature at a 5-cm depth were measured and monitored in an experimental field using a portable soil thermal property analyzer, a portable full-range spectrometer, and temperature and water potential probes. The field was located in the North China Plain and had been cropped in a winter wheat (Triticum aestivum L.)–maize (Zea mays L.) system for 5 yr. With biochar amendment, soil thermal conductivity was decreased significantly by 3.48 and 7.49% with 4.5 (B4.5) and 9.0 t ha−1 yr−1 (B9.0) of biochar addition, respectively, which was consistent with a decrease in soil bulk density. Soil water potential slightly increased under B4.5 treatment but decreased under B9.0 treatment relative to the control. Reflectance increased in the near-ultraviolet and blue-light wavelengths (350–513 nm) and decreased in the infrared wavelength range (520–2350 nm) with biochar amendment. Biochar amendment reduced diurnal soil-temperature fluctuations on both daily and seasonal scales, although the annual average daily soil temperatures at a 5-cm depth showed no significant difference among treatments. Comparison with the control showed that biochar treatment moderated soil temperature extremes, lowering the temperature when soil temperature was high and raising it when soil temperature was low. This moderating capability was mostly within ±0.4 and ±0.8°C for mean daily temperature and mean diurnal temperature of soil, respectively. The effect of biochar amendment on soil temperatures can be explained by the combined action of changes in soil thermal conductivity and reflectance.

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Crossref · 10.2136/sssaj2012.0180

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  • In controlled greenhouse conditions with less intense lighting, the albedo effect may be missed, somewhat decreasing study relevance but increasing possibilities to study direct effects of changes in soil chemistry and soil moisture on plant growth.

    “However, in controlled greenhouse conditions with less intense lighting conditions, this effect may be missed (Zhang et al., 2013), somewhat decreasing study relevance but increasing the possibilities to study the direct effects of changes in soil chemistry and soil moisture on plant growth.”

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Authors
Zhang, Q., Wang, Y., Wu, Y., Wang, X., Du, Z., Liu, X., & Song, J.
Affiliations
  • Chinese Academy of Agricultural Sciences (CN)
  • Chinese Academy for Environmental Planning (CN)
Corresponding author
Zhang, Qingzhong
Venue
Soil Science Society of America Journal
Publisher
Wiley
Published
2013-09
Volume
77
Issue
5
Pages
1478-1487
ISSN
0361-5995 (ISSN-L)
OpenAlex
W1999935688
Cited by
128
References
55
Citations by year
2026: 8 · 2025: 17 · 2024: 17 · 2023: 14 · 2022: 16 · 2021: 15 · 2020: 11 · 2019: 8 · 2018: 10 · 2017: 4 · 2016: 5 · 2014: 3
FWCI
3.86
Type
journal article
Language
en
Open access
closed
Locations
Soil Science Society of America Journal (publishedVersion)
Funders
National Scientific Funds of China (40701090)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Physical Sciences › Engineering › Civil and Structural Engineering › Soil and Unsaturated Flow
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Management and Crop Yield
Keywords
biochar amendment, soil thermal conductivity, soil surface reflectance, soil temperature, soil water potential, soil bulk density, soil thermal properties, North China Plain

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