Water-stable aggregates and carbon accumulation in barren sandy soil depend on organic amendment method: A three-year field study

Organic amendment has proven to reduce resource waste and environmental pollution, in addition to increasing soil quality. However, the effect of different organic amendment methods on water-stable aggregates and soil organic carbon (SOC) accumulation is unknown, especially in barren sandy soil. A f...

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Bibliographic Details
Published in:Journal of cleaner production 2019-03, Vol.212, p.393-400
Main Authors: Dai, Hongcui, Chen, Yuanquan, Liu, Kaichang, Li, Zongxin, Qian, Xin, Zang, Huadong, Yang, Xiaolei, Zhao, Yingxing, Shen, Yawen, Li, Zhejin, Sui, Peng
Format: Article
Language:English
Subjects:
Biochar
Biogas residue
Soil aggregate formation
Soil carbon accumulation
Soil remediation comparison
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Summary:Organic amendment has proven to reduce resource waste and environmental pollution, in addition to increasing soil quality. However, the effect of different organic amendment methods on water-stable aggregates and soil organic carbon (SOC) accumulation is unknown, especially in barren sandy soil. A field experiment with four organic amendment methods, straw (ST, local practice), biogas residue (BR), manure (PM), and biochar (BC), was designed with the equal amount of nitrogen (N) input in the North China Plain. Soil aggregate distribution, stability, and aggregate-associated C at two depths (0–10 cm and 10–20 cm) were analyzed after a treatment was applied to evaluate soil quality improvement. The main results were as follows: compared to ST treatment, BC treatment enhanced SOC in the 0–10 cm and 10–20 cm layers by 143.8% and 156.5%, respectively (P 
ISSN:0959-6526
1879-1786
DOI:10.1016/j.jclepro.2018.12.013