Comparison of spatial interpolators for variability analysis of soil chemical properties in Cuamba (Mozambique)

Detalhes bibliográficos
Autor(a) principal: Costa, Ana Cristina
Data de Publicação: 2017
Outros Autores: Bofana, José do Rosário
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/28029
Resumo: Costa, A. C., & Bofana, J. D. R. (2017). Comparison of spatial interpolators for variability analysis of soil chemical properties in Cuamba (Mozambique). African Journal of Agricultural Research, 12(25), 2153-2162. https://doi.org/10.5897/AJAR2016.12415
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spelling Comparison of spatial interpolators for variability analysis of soil chemical properties in Cuamba (Mozambique)Agricultural and Biological Sciences (miscellaneous)SDG 15 - Life on LandCosta, A. C., & Bofana, J. D. R. (2017). Comparison of spatial interpolators for variability analysis of soil chemical properties in Cuamba (Mozambique). African Journal of Agricultural Research, 12(25), 2153-2162. https://doi.org/10.5897/AJAR2016.12415The knowledge of spatial distribution of soil attributes, particularly chemical ones, which is very relevant for agricultural planning. Several studies have focused on spatial interpolation of soil properties, but only a few of them have been undertaken in sub-Saharan Africa. This study aims to analyse the spatial variability of hydrogen potential (pH) and electric conductivity (EC) within an agricultural region in Cuamba district of Mozambique. Efficiency of a deterministic and a stochastic interpolator were compared, namely Inverse Distance Weighting (IDW) and Ordinary kriging, respectively. Soil samples were collected at random locations scattered through the study region, and were later analyzed in water and soil laboratory. These point data were then used to produce interpolated surfaces of soil chemical properties. Efficiency of spatial interpolation methods was assessed based on prediction errors’ statistics derived from cross-validation. Results show that ordinary kriging was less biased and more accurate than IDW at samples’ locations. Hence, maps produced using the former method are a valuable contribution for the spatial characterization of soil quality, according to its chemical properties. Considering the spatial patterns of pH, southeast area is characterized by clayey soils, which has a high fertility potential for food crops.NOVA Information Management School (NOVA IMS)RUNCosta, Ana CristinaBofana, José do Rosário2018-01-11T23:23:04Z2017-06-222017-06-22T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10application/pdfhttp://hdl.handle.net/10362/28029eng1991-637XPURE: 3264119https://doi.org/10.5897/AJAR2016.12415info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T04:14:58Zoai:run.unl.pt:10362/28029Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:28:51.087502Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Comparison of spatial interpolators for variability analysis of soil chemical properties in Cuamba (Mozambique)
title Comparison of spatial interpolators for variability analysis of soil chemical properties in Cuamba (Mozambique)
spellingShingle Comparison of spatial interpolators for variability analysis of soil chemical properties in Cuamba (Mozambique)
Costa, Ana Cristina
Agricultural and Biological Sciences (miscellaneous)
SDG 15 - Life on Land
title_short Comparison of spatial interpolators for variability analysis of soil chemical properties in Cuamba (Mozambique)
title_full Comparison of spatial interpolators for variability analysis of soil chemical properties in Cuamba (Mozambique)
title_fullStr Comparison of spatial interpolators for variability analysis of soil chemical properties in Cuamba (Mozambique)
title_full_unstemmed Comparison of spatial interpolators for variability analysis of soil chemical properties in Cuamba (Mozambique)
title_sort Comparison of spatial interpolators for variability analysis of soil chemical properties in Cuamba (Mozambique)
author Costa, Ana Cristina
author_facet Costa, Ana Cristina
Bofana, José do Rosário
author_role author
author2 Bofana, José do Rosário
author2_role author
dc.contributor.none.fl_str_mv NOVA Information Management School (NOVA IMS)
RUN
dc.contributor.author.fl_str_mv Costa, Ana Cristina
Bofana, José do Rosário
dc.subject.por.fl_str_mv Agricultural and Biological Sciences (miscellaneous)
SDG 15 - Life on Land
topic Agricultural and Biological Sciences (miscellaneous)
SDG 15 - Life on Land
description Costa, A. C., & Bofana, J. D. R. (2017). Comparison of spatial interpolators for variability analysis of soil chemical properties in Cuamba (Mozambique). African Journal of Agricultural Research, 12(25), 2153-2162. https://doi.org/10.5897/AJAR2016.12415
publishDate 2017
dc.date.none.fl_str_mv 2017-06-22
2017-06-22T00:00:00Z
2018-01-11T23:23:04Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10362/28029
url http://hdl.handle.net/10362/28029
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1991-637X
PURE: 3264119
https://doi.org/10.5897/AJAR2016.12415
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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