Summary
This data synthesis characterises ammonia volatilisation losses across different upland crop types in China and provides crop-specific volatilisation coefficients derived from empirical field studies. By quantifying how soil pH, temperature, and fertiliser application method affect ammonia emissions, the authors contribute to understanding nitrogen cycling in upland agroecosystems. The findings may inform nitrogen management strategies designed to reduce atmospheric nitrogen losses and improve nutrient use efficiency.
UK applicability
Whilst the synthesis is geographically specific to upland China, the crop-agnostic relationships between soil pH, temperature, and ammonia volatilisation may have partial relevance to UK arable and upland systems. However, direct application would require validation against UK soil and climatic conditions, and crop-specific coefficients derived from Chinese uplands may not transfer directly to UK farming systems.
Key measures
Crop-specific ammonia volatilisation coefficients; volatilisation rates as influenced by soil pH, temperature, and fertiliser application method
Outcomes reported
The study synthesised empirical field data to characterise ammonia volatilisation losses across different upland crop types in China and quantified crop-specific volatilisation coefficients. It identified principal environmental and agronomic factors—including soil pH, temperature, and fertiliser application method—that influence ammonia emissions from these agroecosystems.
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