Variation in soil fertility influences cycle dynamics and crop diversity in shifting cultivation systems
Smallholder farming in Amazonia is practised mostly through shifting cultivation, which under low population pressure is well adapted to the low-fertility soils that predominate in uplands and to the lack of external inputs. In this paper we investigate the effects of soil heterogeneity (in terms of...
| Autor principal: | Junqueira, André Braga |
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| Outros Autores: | Stomph, Tjeerd Jan, Clement, Charles Roland, Struik, Paul C. |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Agriculture, Ecosystems and Environment
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/17393 |
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oai:repositorio:1-17393 |
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dspace |
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oai:repositorio:1-17393 Variation in soil fertility influences cycle dynamics and crop diversity in shifting cultivation systems Junqueira, André Braga Stomph, Tjeerd Jan Clement, Charles Roland Struik, Paul C. Anthropogenic Effect Crop Cultivation Diversity Index Intensive Agriculture Smallholder Soil Fertility Upland Region Amazonia Smallholder farming in Amazonia is practised mostly through shifting cultivation, which under low population pressure is well adapted to the low-fertility soils that predominate in uplands and to the lack of external inputs. In this paper we investigate the effects of soil heterogeneity (in terms of fertility and texture) on shifting cultivation systems in Central Amazonia. We focus on the effect of soil variation between anthropogenic upland soils (Amazonian Dark Earths, ADE) and surrounding soils on the size and location of cultivation plots, on the cultivation cycle, and on the diversity and assemblage of crops. We found that more fertile soils are cultivated more intensively (with shorter fallow periods, higher frequency of cultivation, shorter cycles and higher labour requirements) and with different crop assemblages, and have similar or larger numbers of crop species and/or landraces. Current smallholder farming systems along soil gradients between ADE and non-anthropogenic soils show that enhanced soil fertility can favour synergies between intensification and diversification in shifting cultivation. © 2015 Elsevier B.V. 2020-06-15T21:42:09Z 2020-06-15T21:42:09Z 2016 Artigo https://repositorio.inpa.gov.br/handle/1/17393 10.1016/j.agee.2015.09.015 en Volume 215, Pags. 122-132 Restrito Agriculture, Ecosystems and Environment |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Anthropogenic Effect Crop Cultivation Diversity Index Intensive Agriculture Smallholder Soil Fertility Upland Region Amazonia |
| spellingShingle |
Anthropogenic Effect Crop Cultivation Diversity Index Intensive Agriculture Smallholder Soil Fertility Upland Region Amazonia Junqueira, André Braga Variation in soil fertility influences cycle dynamics and crop diversity in shifting cultivation systems |
| topic_facet |
Anthropogenic Effect Crop Cultivation Diversity Index Intensive Agriculture Smallholder Soil Fertility Upland Region Amazonia |
| description |
Smallholder farming in Amazonia is practised mostly through shifting cultivation, which under low population pressure is well adapted to the low-fertility soils that predominate in uplands and to the lack of external inputs. In this paper we investigate the effects of soil heterogeneity (in terms of fertility and texture) on shifting cultivation systems in Central Amazonia. We focus on the effect of soil variation between anthropogenic upland soils (Amazonian Dark Earths, ADE) and surrounding soils on the size and location of cultivation plots, on the cultivation cycle, and on the diversity and assemblage of crops. We found that more fertile soils are cultivated more intensively (with shorter fallow periods, higher frequency of cultivation, shorter cycles and higher labour requirements) and with different crop assemblages, and have similar or larger numbers of crop species and/or landraces. Current smallholder farming systems along soil gradients between ADE and non-anthropogenic soils show that enhanced soil fertility can favour synergies between intensification and diversification in shifting cultivation. © 2015 Elsevier B.V. |
| format |
Artigo |
| author |
Junqueira, André Braga |
| author2 |
Stomph, Tjeerd Jan Clement, Charles Roland Struik, Paul C. |
| author2Str |
Stomph, Tjeerd Jan Clement, Charles Roland Struik, Paul C. |
| title |
Variation in soil fertility influences cycle dynamics and crop diversity in shifting cultivation systems |
| title_short |
Variation in soil fertility influences cycle dynamics and crop diversity in shifting cultivation systems |
| title_full |
Variation in soil fertility influences cycle dynamics and crop diversity in shifting cultivation systems |
| title_fullStr |
Variation in soil fertility influences cycle dynamics and crop diversity in shifting cultivation systems |
| title_full_unstemmed |
Variation in soil fertility influences cycle dynamics and crop diversity in shifting cultivation systems |
| title_sort |
variation in soil fertility influences cycle dynamics and crop diversity in shifting cultivation systems |
| publisher |
Agriculture, Ecosystems and Environment |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/17393 |
| _version_ |
1787144548521082880 |
| score |
11.653393 |