Principal component analysis of soil properties in assessing erodibility indices in the Northern Brahmaputra plains of Assam

Deka, B.C.; Dutta, Marami

doi:10.5958/2455-7145.2016.00016.3

Cited by 5 publications

(9 citation statements)

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“…A strong positive correlation of the erodibility indices with relief supported the effect of elevation on soil properties as well as soil erosion. This is similar to the ndings of Deka & Dutta [43] those who also obtained similar results in the soils of the north bank plain of Assam, India. Based on the calculated values of different erodibility indices the upper piedmont plain soils could be regarded as the most erodible soils of the studied watershed area.…”

Section: Erosion Index (Ei)supporting

confidence: 92%

“…The decreasing trend of macroaggregate towards upslope might be due to increase in total sand content as evident from the signi cant negative correlation of macroaggregate with total sand (r = -0.595**). Similar results were reported by Deka and Dutta [43] while assessing erodibility indices in the Northern Brahmaputra plains Assam, India.…”

Section: Erodibility Indicessupporting

confidence: 88%

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Soil Erosion risk Assessment in Moridhal watershed of Assam, India using Universal Soil Loss Equation and GIS

Bharteey¹,

Deka

Patgiri

et al. 2023

Preprint

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Soil erosion is one of the major factors affecting sustainability of agricultural production in watershed. The objective of this paper is to estimate soil loss using the universal soil loss equation (USLE) model and GIS and to suggest soil conservation practices in Moridhal watershed. Soil loss was estimated by USLE. In addition, measurements of randomly selected soil and water conservation structures were done at four physiographic units of watershed. The erodibility of the studied soils was assessed by computing various erodibility indices like clay ratio, silt clay ratio, modified clay ratio, dispersion ratio, erosion ratio and erosion index. The soil loss of watershed was varied from very slight to very severe (range 0.87–67.77 t ha-1 yr-1). Among the physiographic units, the soil loss in the upper piedmont plain area was moderately severe to very severe with a value varying from 19.9–67.8 t ha-1 yr-1. The dispersion ratio of the soils varied from 0.06 to 1.18. It was observed that 48.82 per cent of the total studied soil samples had dispersion ratio values above 0.15 which may be considered as erodible. The erosion ratio and erosion index of studied soils varied from varied from 0.01–0.55 and 0.03–0.71, respectively. Based on the study it was found that the soils in different physiographic units are suffering from varying degree of soil erosion. The upper piedmont plain areas of the watershed require management practices which could improve the erosion status and soil productivity. The results of soil loss obtained from the study could be effectively used by the planners, watershed managers and policy makers to formulate site specific conservation plans in order to minimize soil loss for sustaining productivity.

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Section: Erosion Index (Ei)supporting

confidence: 92%

Section: Erodibility Indicessupporting

confidence: 88%

Soil Erosion risk Assessment in Moridhal watershed of Assam, India using Universal Soil Loss Equation and GIS

Bharteey¹,

Deka

Patgiri

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…Similar relationships were also reported by Deka et al, (2017) in the soils of the North Bank Plains of Assam, India.…”

Section: Soil Erosion Related Propertiessupporting

confidence: 87%

“…The decreasing trend of macroaggregate towards upslope might be due to increase in total sand content as evident from the signi cant negative correlation of macroaggregate with total sand (r = -0.595**). Similar results were reported by Deka and Dutta, (2016) while assessing erodibility indices in the Northern Brahmaputra plains Assam, India.…”

Section: Aggregate Statussupporting

confidence: 86%

“…Among the physiographic units, the highest value of mean weight diameter was recorded under ood plain (Mean 1.86 mm) and the lowest in upper piedmont plain (Mean 1.41 mm). The increasing trend of mean weight diameter from upper piedmont plain to ood plain indicated better aggregation which might be brought about by clay and organic matter (Deka et al, 2016). This is supported by the existence of a signi cant positive correlation of mean weight diameter with clay (r = 0.534**) and organic matter (r = 0.308**).…”

Section: Aggregate Statusmentioning

confidence: 77%

See 1 more Smart Citation

Soil erosion risk assessment in Moridhal watershed of Assam, India using Universal Soil Loss Equation and GIS

Bharteey,

Deka,

Patgiri

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

Soil erosion is one of the major factors affecting sustainability of agricultural production in watershed. The objective of this paper is to estimate soil loss using the universal soil loss equation (USLE) model and GIS and to suggest soil conservation practices in Moridhal watershed. Soil loss was estimated by USLE. In addition, measurements of randomly selected soil and water conservation structures were done at four physiographic units of watershed. The erodibility of the studied soils was assessed by computing various erodibility indices like clay ratio, silt clay ratio, modified clay ratio, dispersion ratio, erosion ratio and erosion index. The soil loss of watershed was varied from very slight to very severe (range 0.87-67.77 t ha-1 yr-1). Among the physiographic units, the soil loss in the upper piedmont plain area was moderately severe to very severe with a value varying from 19.9-67.8 t ha-1 yr-1. The dispersion ratio of the soils varied from 0.06 to 1.18. It was observed that 48.82 per cent of the total studied soil samples had dispersion ratio values above 0.15 which may be considered as erodible. The erosion ratio and erosion index of studied soils varied from varied from 0.01-0.55 and 0.03-0.71, respectively. Based on the study it was found that the soils in different physiographic units are suffering from varying degree of soil erosion. The upper piedmont plain areas of the watershed require management practices which could improve the erosion status and soil productivity. The results of soil loss obtained from the study could be effectively used by the planners, watershed managers and policy makers to formulate site specific conservation plans in order to minimize soil loss for sustaining productivity.

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Phosphorus loss index for conservation agriculture systems in Southern Brazil: A new approach to environmental risk assessment

Goularte

Favaretto

Martíni

et al. 2020

Science of The Total Environment

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Principal component analysis of soil properties in assessing erodibility indices in the Northern Brahmaputra plains of Assam

Cited by 5 publications

References 0 publications

Soil Erosion risk Assessment in Moridhal watershed of Assam, India using Universal Soil Loss Equation and GIS

Soil Erosion risk Assessment in Moridhal watershed of Assam, India using Universal Soil Loss Equation and GIS

Soil erosion risk assessment in Moridhal watershed of Assam, India using Universal Soil Loss Equation and GIS

Phosphorus loss index for conservation agriculture systems in Southern Brazil: A new approach to environmental risk assessment

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