Soil C:N ratios are unresponsive to land use change in Brazil: A comparative analysis
| Autor: | Yuri Lopes Zinn, Gonçalves Jotamo Marrenjo, Carlos Alberto Silva |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010504 meteorology & atmospheric sciences
Ecology Land use business.industry Soil organic matter 04 agricultural and veterinary sciences Vegetation Soil carbon 01 natural sciences Humid tropics Agronomy Agriculture Soil water 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science Animal Science and Zoology Land use land-use change and forestry sense organs business Agronomy and Crop Science 0105 earth and related environmental sciences |
| Zdroj: | Agriculture, Ecosystems & Environment. 255:62-72 |
| ISSN: | 0167-8809 |
| DOI: | 10.1016/j.agee.2017.12.019 |
| Popis: | The C:N ratio is the most widely used indicator of the quality of organic residues and soil organic matter, but little is known about how average soil C:N ratios change when pristine lands are converted to agriculture in the humid tropics. This work aimed to compile the literature on Brazilian soils and calculate percent changes in soil organic carbon (SOC), total N and C:N ratios, after conversion of native vegetation to different land use systems. The hypotheses tested were that land use change affects mean soil C:N ratios across a range of experiments, and that different land use types would affect C:N ratios differently. Overall, average changes for SOC and total N for the 0–20 cm standard depth interval were respectively −14.4 and −13.1% (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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