Boolean and fuzzy methods for identifying lateritic regoliths in the Brazilian Amazon using gamma-ray spectrometric and topographic data
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- 作者：Edgar Romeo Herrera de Figueiredo Izaa ; b ; edgar.iza@cprm.gov.br" class="auth_mail" title="E-mail the corresponding author ; Adriana Maria Coimbra Horbeb ; ahorbe@unb.br" class="auth_mail" title="E-mail the corresponding author ; Adalene Moreira Silvab ; adalene@unb.br" class="auth_mail" title="E-mail the corresponding author
- 关键词：Lateritic crust ; Relief ; Geomorphology ; Modeling ; Oxisol
- 刊名：Geoderma
- 出版年：2016
- 出版时间：1 May 2016
- 年：2016
- 卷：269
- 期：Complete
- 页码：27-38
- 全文大小：5485 K
文摘
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Airborne spectrometric, and relief data was integrated to identify lateritic crust.
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Boolean and fuzzy techniques were compared and used to classify favorable areas.
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Both models showed good correlation with soil and geologic maps.
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The index overlay method showed 8 classes of laterite favorability with kappa 0.87.
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Fuzzy model using fuzzy gamma operator 0.7 showed the best kappa value of 0.91.