Effect of Agricultural Land-Use Patterns
on Soil Organic Carbon Stock in the Upper
Vietnamese Mekong Delta

Ly, Nguyen Thi Hai; Nguyen, Phuong Hong; Anh, Lu; Nguyet, Dang; Nguyen, Ho

doi:10.15244/pjoes/152029

Cited by 3 publications

(1 citation statement)

References 23 publications

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“…Vertisol soils have the highest carbon stock in all management systems compared to other soil types. As Ly et al (2022) researched, soils with high clay content will have high carbon stocks as well. This is because the soil carbon supply will be stored in the pore space of the soil so that the rate of carbon loss will be reduced due to the high clay content in vertisol soils (Siringoringo, 2007).…”

Section: Carbon Stockmentioning

confidence: 99%

A comparison of the dynamics and carbon stocks in rice fields with different management systems and soil types

Widijanto

Amalia

Syamsiyah

et al. 2022

jaa

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Paddy fields in Indonesia, on average, have a very low content of organic matter (organic C < 2%). This organic matter’s low content will affect the carbon stock. The management system as well as soil type could affect carbon stock in the soil. This study aims to determine the dynamics and carbon stock in paddy fields with different management systems and soil types. The research was conducted in Karanganyar Regency; Sukoharjo Regency and Klaten Regency. Factors observed include organic, semi-organic, inorganic management systems and soil types (i.e., ultisol, vertisol and inseptisol). Soil sampling was carried out 3-5 days after harvest. Each combination of the management system and soil type was taken with three soil sample points at two depths (0-20 cm and > 20 cm) with three repeats. The parameters hedied include organic C, dissolved organic C, microbial C, pHH2O, total N, CEC, soil texture and bulk density. Soil depth and the interaction of management systems and soil types affect the total organic C. Total organic carbon is highest in vertisol soils with an organic management system (2.59%) and a depth of 0-20 cm (2.24%). Carbon stock (82.62 tons ha-1) in vertisol soils with organic management systems is higher than in vertisol soils with semi-organic and inorganic management systems, with a C stock of 71.19 tons ha-1 and 68.4 tons ha-1.

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Section: Carbon Stockmentioning

confidence: 99%

A comparison of the dynamics and carbon stocks in rice fields with different management systems and soil types

Widijanto

Amalia

Syamsiyah

et al. 2022

jaa

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Assessment of macronutrients status using digital soil mapping techniques: a case study in Maru’ak area in Lorestan Province, Iran

Salmanpour

Jamshidi

Fatehi

et al. 2023

Environ Monit Assess

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The present study was conducted 1: to compare generalized linear model (GLM), random forest (RF), and Cubist, 2: to produce available phosphorus (AP) and potassium (AK) maps, and 3: to identify covariates controlling mineral distribution in Maru'ak area, Lorestan Province. To ful ll the goals, the location of 173 soil samples was determined by the cLHS method, in four different land uses including orchards, paddy elds, and agricultural and abandoned elds. The performance of models was assessed by the R 2 , RMSE, and MAE. Results showed that the RF model tted better than GLM and Cubist models, and could explain 40 and 57% of AP and AK distribution, respectively. The R 2 , RMSE, and MAE for the RF model were 0.4, 2.81, and 2.43 for predicting AP; and were 0.57, 143.77, and 116.61 for predicting AK, respectively. The most important predictors selected by the RF model were valley depth and SAVI for AP and AK, respectively. The maps showed higher amounts of AP and AK in apricot orchards compared to other land uses, and no difference was observed between AP and AK content of paddy elds, agricultural and abandoned area. The higher amounts of AP and AK were related to orchard management, such as not removing plant residuals and fertilizer consumptions. It can be concluded from the present study that the orchards were the best land use for the study area, which increases soil quality and is in line with sustainable management. However, before generalizing the results, more detailed research is needed.

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Investigating the status of some macronutrients using digital mapping techniques in Maru’ak area, Lorestan Province, Iran

Salmanpour

Jamshidi

Fatehi

et al. 2023

Preprint

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The present study was conducted 1: to compare generalized linear model (GLM), random forest (RF), and Cubist, 2: to produce available phosphorus (AP) and potassium (AK) maps, and 3: to identify covariates controlling mineral distribution in Maru’ak area, Lorestan Province. To fulfill the goals, the location of 173 soil samples was determined by the cLHS method, in four different land uses including orchards, paddy fields, and agricultural and abandoned fields. The performance of models was assessed by the R2, RMSE, and MAE. Results showed that the RF model fitted better than GLM and Cubist models, and could explain 40 and 57% of AP and AK distribution, respectively. The R2, RMSE, and MAE for the RF model were 0.4, 2.81, and 2.43 for predicting AP; and were 0.57, 143.77, and 116.61 for predicting AK, respectively. The most important predictors selected by the RF model were valley depth and SAVI for AP and AK, respectively. The maps showed higher amounts of AP and AK in apricot orchards compared to other land uses, and no difference was observed between AP and AK content of paddy fields, agricultural and abandoned area. The higher amounts of AP and AK were related to orchard management, such as not removing plant residuals and fertilizer consumptions. It can be concluded from the present study that the orchards were the best land use for the study area, which increases soil quality and is in line with sustainable management. However, before generalizing the results, more detailed research is needed.

show abstract

Effect of Agricultural Land-Use Patterns on Soil Organic Carbon Stock in the Upper Vietnamese Mekong Delta

Cited by 3 publications

References 23 publications

A comparison of the dynamics and carbon stocks in rice fields with different management systems and soil types

A comparison of the dynamics and carbon stocks in rice fields with different management systems and soil types

Assessment of macronutrients status using digital soil mapping techniques: a case study in Maru’ak area in Lorestan Province, Iran

Investigating the status of some macronutrients using digital mapping techniques in Maru’ak area, Lorestan Province, Iran

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