Redistributions of 137Cs and soil components on cultivated hill slopes with hedgerows as conservation measures

Hien, P.D.; Dung, Bui Dac; Phien, T.

doi:10.1016/j.still.2012.12.003

Cited by 16 publications

(2 citation statements)

References 24 publications

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“…In terms of long-term agricultural practice, farmers are aware that terracing can efficiently prevent soil and water losses in fields. Therefore, they developed a variety of terraces by dissecting long slopes into several short segments, such as a horizontal gully, contour hedgerows and reverse sloping terraces [38]. In the remote mountain areas of southwestern China, lynchets of terracing hedgerows on the sloping lands are the dominant soil and water conservation strategy in the farming system.…”

Section: Soil Conservation Function Of the Lynchets Of Terracing Hedg...mentioning

confidence: 99%

Exploring Soil Particle Size Fraction and Spatial Redistribution of 137Cs in Sloping Landscapes with Different Lynchet Heights of Terracing Hedgerows in the Remote Mountain Region of Southwestern China

et al. 2023

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Soil erosion is a global environmental problem related to anthropogenic activities which are influenced by natural factors. The sloping cultivated lands, with serious soil erosion, constitute a significant proportion of the landscape in the remote mountain regions of southwestern China. The traditional soil conservation strategy, involving a certain height of lynchets on the edge of the terracing hedgerows of the sloping lands, plays an effective part in soil and water conservation. A typical sloping landscape with a lynchet of terracing hedgerows was chosen in this study. The objective of this study was to explore soil particle size fraction and spatial redistribution of 137Cs in sloping landscapes with different lynchet heights of terracing hedgerows. The results showed that fine-grained sediments were deposited in front of the lynchet of terracing hedgerows, especially particle sizes grouped at <0.002 mm clay and 0.002–0.02 mm silt. The 137Cs concentration profiles of the lynchet from the upper to the lower sloping landscape showed first increasing and then decreasing trends when the soil depth increased. 137Cs inventory generally increased along with the whole sloping landscapes. Moreover, the results suggested that the mean 137Cs inventory and erosion rate could be represented by the average value of the middle slope position. The highest value of annual erosion modulus reached 4917.06 t km−2 a−1 on the upper site of the sloping lands. Moreover, the annual erosion modulus was synchronously reduced from the upper to the lower sloping landscape and the erosion rate had a similar trend. Meanwhile, the K values of soil erodibility changed from 0.0338 t hm2 h (hm−2 MJ−1 mm−1) to 0.0375 t hm2 h (hm−2 MJ−1 mm−1) along the slope length. There was a logarithmic relationship between the K value and the 137Cs inventory. Therefore, it is useful to study spatial patterns of soil erosion in different slope positions with different heights of lynchet of terracing hedgerows of the whole sloping landscape. Moreover, it is important to implement a soil conservation strategy in the remote mountain regions of China.

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Section: Soil Conservation Function Of the Lynchets Of Terracing Hedg...mentioning

confidence: 99%

Exploring Soil Particle Size Fraction and Spatial Redistribution of 137Cs in Sloping Landscapes with Different Lynchet Heights of Terracing Hedgerows in the Remote Mountain Region of Southwestern China

et al. 2023

View full text Add to dashboard Cite

show abstract

“…In terms of long-term agricultural practice, farmers aware that terracing can e ciently prevent soil and water losses in elds, and have developed a variety of terraces by dissecting long slopes into several short segments, such as level, sloping and reverse sloping terraces (Hien et al, 2013). In the remote mountain areas of southwestern China, lynchets of terracing hedgerow on the sloping lands are the dominant strategy in the farming system.…”

Section: Soil Conservation Function Of the Lynchets Of Terracing Hedgerows On Sloping Landscapesmentioning

confidence: 99%

Exploring soil particle size fraction and spatial redistribution of 137Cs in sloping landscapes with different lynchet height of terracing hedgerows in the remote mountain region, southwestern China

Zhou¹,

Zhuang²,

Shi³

2021

Preprint

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Soil erosion is a global environmental problem related to anthropogenic activities, as well as being influenced by natural factors. The sloping cultivated lands, which have serious soil erosion, constitute a major proportion of landscape in the remote mountain region. The traditional soil conservation strategy, referred as certain height of lynchets on the edge of the terracing hedgerows of the sloping lands, plays an effective part in soil and water conservation. A typical sloping landscape with lynchet of terracing hedgerows was chosen in this study. The results showed that fine-grained sediment was deposited in front of the lynchet of terracing hedgerows, especially particle size grouped at < 0.002mm and 0.002-0.02mm. The profiles 137Cs concentration of the lynchet from the upper to the lower sloping landscape showed first increased then decreased trends as the soil depth increased. 137Cs inventory generally increased along the whole sloping landscapes. And the results suggested that the mean 137Cs inventory and erosion rate could be represented by the average value of the middle slope position. The highest value of annual erosion modulus reached to 4917.06 tkm− 2a− 1 on the upper site of the sloping lands. While the annual erosion modulus were synchronous reduced from the upper to the lower of the slope landscape, the erosion rate had the similar trends. Meanwhile, K values of soil erodibility changed from 0.0338 thm2h (hm− 2MJ− 1mm− 1) to 0.0375 thm2h (hm− 2MJ− 1mm− 1) along the slope length. There existed the logarithmic relationship between K value and 137Cs inventory in the correspondent slope position. Therefore, it is useful to study spatial patterns of soil erosion in different slope positions with the different height of lynchet of terracing hedgerows of the whole sloping landscape. Also it is important for implementing soil conservation strategy in the remote mountain region, China.

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137Cs Tracing Dynamics of Soil Erosion, Organic Carbon, and Total Nitrogen in Terraced Fields and Forestland in the Middle Mountains of Nepal

Su¹,

Xiong²,

Deng³

et al. 2017

Springer Geography

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Redistributions of 137Cs and soil components on cultivated hill slopes with hedgerows as conservation measures

Cited by 16 publications

References 24 publications

Exploring Soil Particle Size Fraction and Spatial Redistribution of 137Cs in Sloping Landscapes with Different Lynchet Heights of Terracing Hedgerows in the Remote Mountain Region of Southwestern China

Exploring Soil Particle Size Fraction and Spatial Redistribution of 137Cs in Sloping Landscapes with Different Lynchet Heights of Terracing Hedgerows in the Remote Mountain Region of Southwestern China

Exploring soil particle size fraction and spatial redistribution of 137Cs in sloping landscapes with different lynchet height of terracing hedgerows in the remote mountain region, southwestern China

137Cs Tracing Dynamics of Soil Erosion, Organic Carbon, and Total Nitrogen in Terraced Fields and Forestland in the Middle Mountains of Nepal

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