137Cs estimates of soil erosion rates in a small catchment on a channelized river floodplain in the lower reaches of Yangtze River, China

Wang, Xiaolei; Xue, Bin; Yao, Shuchun; Gu, Zhen; Yang, Benjun; Zhang, Mingli; Zhu, Ying

doi:10.1016/j.jenvrad.2019.106008

Cited by 15 publications

(5 citation statements)

References 66 publications

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“…These models are based on the ratio of the measured 137 Cs inventory at a specific eroding point to the value of the reference inventory, thus quantifying the relationship between 137 Cs loss and soil erosion rates. For this study, the PDM was used as the study site is composed of uncultivated soil [ 35 ].…”

Section: Methodsmentioning

confidence: 99%

Investigation of the effect of anthropogenic land use on the Pănăzii Lake (Romania) catchment area using Cs-137 and Pb-210 radionuclides

et al. 2021

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The problem of soil degradation has accentuated over recent decades. Aspects related to soil erosion and its relation to changes in land use as well as anthropogenic influence constitute a topic of great interest. The current study is focused on a soil erosion assessment in relation to land use activities in the Pănăzii Lake catchment area. Fallout radionuclides were used to provide information on soil erosion as well as redistribution rates and patterns. Variations in the sedimentation rate of the lake were also investigated as these reflect periods in which massive erosion events occurred in the lake catchment area. The novelty of this study is the construction of a timescale with regard to the soil erosion events to better understand the relationship between soil erosion and land use activities. In this study, 10 soil profiles and one sediment core from the lake were taken. Soil parameters were determined for each sample. The activities of 210Pb, 137Cs and 226Ra were measured by gamma spectroscopy. For low 210Pb activities, measurements via 210Po using an alpha spectrometer were performed. Soil erosion rates were determined by the 137Cs method and the sedimentation rate calculated by the Constant Rate of Supply (CRS) model. A soil erosion rate of 13.5 t·ha-1·yr-1 was obtained. Three distinct periods could be observed in the evolution of the sedimentation rate. For the first period, between 1880 and 1958, the average deposition rate was 9.2 tons/year, followed by a high deposition period (1960–1991) of 29.6 tons/year and a third period, consisting of the last 30 years, during which the sedimentation rate was 15.7 tons/year. These sedimentation rates fluctuated depending on the main land use activity, which can also be seen in the soil erosion rates that had almost doubled by the time agricultural activities were performed in the area.

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Section: Methodsmentioning

confidence: 99%

Investigation of the effect of anthropogenic land use on the Pănăzii Lake (Romania) catchment area using Cs-137 and Pb-210 radionuclides

et al. 2021

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“…During the process of soil erosion control on the LP, quantitatively evaluating the soil erosion rate and effects of soil conservation measures is of great significance for formulating and implementing soil and water conservation measures and for monitoring soil erosion (Wang et al., 2019). The most commonly used soil erosion monitoring methods include traditional slope observation and satellite remote sensing monitoring.…”

Section: Introductionmentioning

confidence: 99%

Effects of different management measures on soil conservation and the influence of environmental conditions: a case study involving UAV remote sensing on the Loess Plateau

Guo

Shao

Ying

2022

Remote Sens Ecol Conserv

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To curb further deterioration due to soil erosion, the Chinese government has successively implemented a series of ecological improvement projects across the Loess Plateau (LP). This study used unmanned aerial vehicle remote sensing combined with the revised universal soil loss equation to quantitatively evaluate the soil conservation rate (SR) under 10 management measures and further incorporated the topographic slope into the analysis to describe the impacts of terrain changes. The results showed that the average SR of plots under artificial management measures was 61.24 AE 0.004% (P < 0.01), whereas that under non-artificial measures was 47.90 AE 0.007% (P < 0.01), which showed that human activities on the LP beneficially improved the SR. In addition, benefiting from the Grain to Green Project, cultivated fields, and economic forests exist only in areas with gentle slopes, and both these areas experience almost no threat of soil loss. A terraced structure exerts an obvious effect on extremely steep slopes (>40°), and a greater slope is associated with a more evident effect. However, the risk of structural failure also increases. In addition, due to restricted water conditions, the effects of existing soil and water conservation measures that use tree planting as the main method have the characteristics of horizontal and vertical zonation differentiation. Valley bottom and semi-humid areas are more profitable, and other areas are more suitable for planting drought-tolerant shrubs. In addition to guiding the deployment of future soil and water conservation measures, this study can provide a theoretical basis for adjusting the existing low-efficiency measures.

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“…), which have been applied in studies related to hydraulic erosion, tillage erosion, and wind erosion worldwide [11][12][13][14][15][16]. In China, researchers have conducted many soil erosion studies based on 137 Cs tracer techniques in the Loess Plateau [17], the Yangtze River Basin [18,19], the Northeast Plain [20,21], the Tibet Plateau [22], and the southern hilly areas [23]. Most of these studies have concentrated on soil erosion in agricultural cultivation regions caused by hydraulic erosion, whereas in the farming-pastoral ecotone of northern China, which is dominated by wind erosion, researchers have conducted relatively few studies on soil erosion changes caused by natural processes as well as ecological restoration processes [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Using 137Cs and 210Pbex to Investigate the Soil Erosion Moduli of the Sandy Area of Typical Grasslands in Northern China

Guo

Zhang

et al. 2022

Sustainability

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Soil erosion results in land degradation and desertification in northern China. The Xilingol League of Inner Mongolia is an important part of the “Two Barriers and Three Belts”, and has been given the main function of “a windbreak and sand-fixing belt of northern China”. Accurate measuring of soil erosion moduli, analyzing the differences in soil erosion moduli across different periods and regions, are the basis for carrying out soil conservation and evaluating the effectiveness of ecological governance. Some radioisotopes are good environmental tracers because they are closely combined with the fine particles of the surface soil and are only affected by the mechanical movement of soil particles. In this paper, Taipusi Banner and Zhengxiangbai Banner, which are in the farming–pastoral ecotone in northern China, were selected as the study area. A regional reference inventory, that is, the activity of 137Cs and 210Pbex in the sample without any soil erosion, accumulation/deposition, or any kind of manual disturbances, as well as the soil erosion moduli, were determined by 137Cs and 210Pbex composite tracing technology and multiple lines of evidence. The results are as follows: (1) The regional 137Cs reference inventory was 1928 Bq∙m−2, and the regional 210Pbex reference inventory was 10,041 Bq∙m−2. (2) On a 50-year time scale, the soil erosion moduli in the study area ranged from 140 t∙km−2∙a−1 to 1030 t∙km−2∙a−1; on a 100-year scale, the soil erosion moduli in the study area ranged from 35 t∙km−2∙a−1 to 2637 t∙km−2∙a−1; the entire study area was in a lightly eroded state. (3) Compared with two periods before and after the 1970s, the southern parts (cultivated land and grassland) experienced an increasing trend in soil erosion moduli due to land reclamation, grassland grazing, and other activities. Due to weakening wind and increasing precipitation, soil erosion moduli in the northern parts (southern margin of the Hunshandake Sandy Land) slowed down. The study also discussed the uncertainty and application potential of isotope-tracing technology in sandy land of typical grasslands in northern China.

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137Cs estimates of soil erosion rates in a small catchment on a channelized river floodplain in the lower reaches of Yangtze River, China

Cited by 15 publications

References 66 publications

Investigation of the effect of anthropogenic land use on the Pănăzii Lake (Romania) catchment area using Cs-137 and Pb-210 radionuclides

Investigation of the effect of anthropogenic land use on the Pănăzii Lake (Romania) catchment area using Cs-137 and Pb-210 radionuclides

Effects of different management measures on soil conservation and the influence of environmental conditions: a case study involving UAV remote sensing on the Loess Plateau

Using 137Cs and 210Pbex to Investigate the Soil Erosion Moduli of the Sandy Area of Typical Grasslands in Northern China

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