Academic Journal
The responses of soil, litter and root carbon stocks to the conversion of forest regrowth to crop and tree production systems used by smallholder farmers in eastern Amazonia
| العنوان: | The responses of soil, litter and root carbon stocks to the conversion of forest regrowth to crop and tree production systems used by smallholder farmers in eastern Amazonia |
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| المؤلفون: | Lemos, E. C. M., Vasconcelos, S. S., Santiago, W. R., de Oliveira Junior, M. C. M., de A. Souza, C. M. |
| المساهمون: | Goss, Michael, Empresa Brasileira de Pesquisa Agropecuária, Fundação Amazônia Paraense de Amparo à Pesquisa, Conselho Nacional de Desenvolvimento Científico e Tecnológico |
| المصدر: | Soil Use and Management ; volume 32, issue 4, page 504-514 ; ISSN 0266-0032 1475-2743 |
| بيانات النشر: | Wiley |
| سنة النشر: | 2016 |
| المجموعة: | Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: | The impact of substituting forests for smallholder agricultural production systems on soil carbon (C) stocks is not well understood in Brazilian Amazonia. Most surveys of soil C stocks are restricted to the top 30 cm of soil and do not include measurements of litter and root stocks. Here, we quantify the stocks of C in soil (0–100 cm depth), aboveground litter and coarse roots of traditional (slash‐and‐burn) and alternative ( Schizolobium amazonicum ‐planted forest and silvopastoral system) smallholder agricultural systems, which were compared with a reference area (forest regrowth) in the eastern Amazonia. The soil C stocks in the 0–100 cm layer were larger in the forest regrowth treatment (156.8 ± 15.5 Mg/ha) than in the other treatments ( S. amazonicum = 85.3 ± 6.5, silvopastoral = 108.0 ± 4.4 Mg/ha) but did not differ from the soil C stock in the slash‐and‐burn treatment (127.2 ± 6.1 Mg/ha). The soil C stocks at the 0–30 cm layer, which represented 33–50% of the total C of the 0–100 cm layer, did not differ among the treatments. The litter C stocks were ranked in the following order: silvopastoral > forest regrowth > S. amazonicum > slash‐and‐burn. The forest regrowth treatment had a greater coarse root C stock (0.84 ± 0.10 Mg/ha) than the other treatments (silvopastoral = 0.28 ± 0.03, S. amazonicum = 0.18 ± 0.03, slash‐and‐burn = 0.27 ± 0.04 Mg/ha). Soil, litter and root C stocks were negatively impacted by the conversion of forest regrowth to cultivation systems. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1111/sum.12308 |
| DOI: | 10.1111/sum.12308/fullpdf |
| الاتاحة: | http://dx.doi.org/10.1111/sum.12308 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fsum.12308 http://onlinelibrary.wiley.com/wol1/doi/10.1111/sum.12308/fullpdf |
| Rights: | http://onlinelibrary.wiley.com/termsAndConditions#vor |
| رقم الانضمام: | edsbas.51C50351 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1111/sum.12308 |
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