The key role of biochar in amending acidic soil: reducing soil acidity and improving soil acid buffering capacity
South China Agricultural University
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Abstract
Abstract Soil acidification negatively affects plant growth, soil microbial composition and diversity, and the sustainability of agricultural ecosystems. The primary sources of soil acidity include base cations (BCs) leaching loss, the weathering of aluminum-containing minerals, excess cation uptake by plants, and the transformation of nitrogen, carbon, and sulfur compounds by soil microorganisms. Soil acidity reflects the degree of soil acidification and is characterized by the active acidity (intensity factor) and exchangeable acidity (quantity factor), while soil acid buffering capacity (Acid-BC) (capacity factor) controls the degree and rate of soil acidification. Biochar, as an alkaline, porous and…
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Authors
6Topics & keywords
Topics
Keywords
- Biochar
- Soil pH
- Soil acidification
- Environmental science
- Cation-exchange capacity
- Agronomy
- Soil science
- Chemistry
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