Distribuição espacial do efluxo de CO2 em área de terra preta arqueológica sob cultivo de cacau e café no município de Apuí, AM, Brasil

Campos, Milton César Costa; Alho, Leandro Coutinho; Silva, Diogo André Pinheiro da; Soares, Marcelo Dayron Rodrigues; Cunha, José Maurício da; Silva, Douglas Marcelo Pinheiro da

doi:10.4136/ambi-agua.1892

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…However, this can be explained with the process of C cycling from plant residues to the soil, which occurred with less intensity under natural conditions (forest) than under cultivated conditions (cacao and coffee). Furthermore, according to Campos et al (2016), factors such as the stability of crop cultivation systems, crop spacing, accumulation of leaf litter, and supply of organic C affect the amount of C stored in the soil of cacao and coffee areas.…”

Section: Effect Of Land Use On the Soil Carbon Stockmentioning

confidence: 99%

Soil carbon stock in archaeological black earth under different land use systems in the Brazilian Amazon

et al. 2020

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In the Amazon, there are soils associated with continued human occupation known as "archeological black earth" (ABE). Due to its physical and chemical properties, ABE is more productive than other typical soils in the same region. Therefore, its carbon (C) sequestration mechanism has been a major topic of discussion by the scientific community, aiming to replicate similar characteristics in other soils. Thus, the objective of this study was to develop a predictive model using feature selection and decision tree induction methods for predicting soil C stock in ABE under different land use scenarios. The experiment was carried out in agricultural (coffee, cacao, and beans), pasture, and forest areas. Four feature selection approaches were used to identify the most relevant variables for the proposed model: (i) correlation-based feature selection, (ii) the χ 2 test, (iii) the Wrapper method, and (iv) no feature selection. The decision tree induction technique available in the Weka software was selected for data classification. Soils under cacao and coffee cultivation tend to accumulate more C when compared with soils located at bean crops, pasture, or forest land use systems. Land use and sand content were among the most important variables for the prediction of soil C stock in ABE. Furthermore, the use of a decision tree was effective at predicting soil C stocks for these soils because it enables the creation of models with high accuracy rates of 83, 74, and 81% (using seven, seven, and four rules at depths of 0.00-0.05, 0.05-0.10, and 0.10-0.20 m, respectively). 1 INTRODUCTION In the Amazon, soils with anthropogenic A horizon are associated with long-term human occupation by pre-Columbian indigenous societies (Santos et al., 2017), which formed extensive deposits of organic residues, significantly

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Section: Effect Of Land Use On the Soil Carbon Stockmentioning

confidence: 99%

Soil carbon stock in archaeological black earth under different land use systems in the Brazilian Amazon

et al. 2020

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“…Many studies have verified the existence of spatial dependence structures applying geostatistical analyzes to assess the spatial behavior of IBEs attributes in Amazonas (Brito et al 2018;Campos et al 2016;Cunha et al 2019;Gomes et al 2017;Oliveira et al 2014;Soares et al 2015). This technique not only allowed the evaluation of the aspects of spatial variation of the soil properties, but also guaranteed a good interpolation of the data and the generation of isoline maps with accuracy to better indicate the management zones.…”

Section: Introductionmentioning

confidence: 96%

Impact of different crops on the spatial variability of the chemical attributes of Indian black earth in Southern Amazonas

et al. 2021

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In the Amazon region, soil patches with an anthropic A horizon are found, called Indian black earths (IBEs). Indian black earths are highly fertile and, therefore, are deforested by small local farmers to cultivate without basic management that maintains soil and crop sustainability. Therefore, in order to evaluate the effect of using different cultures on the spatial variability of soil chemical attributes, three cultivated IBEs and one IBE under natural forest were selected for georeferencing and sample collection. The collection was made with a mesh system with 88 points per IBE, stratified in three layers

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Distribuição espacial do efluxo de CO2 em área de terra preta arqueológica sob cultivo de cacau e café no município de Apuí, AM, Brasil

Cited by 2 publications

References 13 publications

Soil carbon stock in archaeological black earth under different land use systems in the Brazilian Amazon

Soil carbon stock in archaeological black earth under different land use systems in the Brazilian Amazon

Impact of different crops on the spatial variability of the chemical attributes of Indian black earth in Southern Amazonas

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