Rainstorm events increase risk of soil salinization in a loess hilly region of China

Ke, Zengming; Liu, Xiaoli; Ma, Lihui; Feng, Zhe; Tu, Wen; Dong, Qianli; Jiao, Feng; Wang, Zhanli

doi:10.1016/j.agwat.2021.107081

Cited by 9 publications

(15 citation statements)

References 35 publications

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“…The depth of the groundwater influence zone (GIZ) was investigated for different maize growth stages in EF and SF. More information on the approach followed is available in Jin et al (2019) and Ke, Liu, et al (2021). As shown in Figure 2, the average depth of GIZ was significantly higher in SF than EF ( p < 0.01).…”

Section: Methodsmentioning

confidence: 99%

“…All treatments were conducted under the same field management standard, as described in more detail in Ke, Liu, et al (2021). Spring maize was planted once a year, with a growth period from April to October.…”

Section: Methodsmentioning

confidence: 99%

“…The soil particle composition was determined by laser diffraction analysis (Mastersizer 2000, Malvern Company, UK). Ke, Liu, et al (2021) reported in detail the method of soil electric conductivity (EC) and the fitted equations between the SSC (g kg −1 ) and EC (μs m −1 ), as follow: S sf = 0.0038 EC − 0.0721, n = 40, p < 0.01; and S ef = 0.0042 EC − 0.1032, n = 40, p < 0.01, where S sf indicates the SSC for SF and S ef indicates the SSC for EF. Then EC values were converted into the soil soluble salt contents.…”

Section: Methodsmentioning

confidence: 99%

“…Previous studies showed soil salinization mainly occurs in the gully consolidation farmland formed during the Gully Land Consolidation Program (Chen et al, 2019; Jin et al, 2019). This Program aimed to conserve soil and water resources and reduce the quantity of river sediment (Ke, Liu, et al, 2021). Gully consolidation farmland comprises excavated farmland (EF) and sediment deposited farmland (SF).…”

Section: Introductionmentioning

confidence: 99%

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Excavated farmland treated with plastic mulching as a strategy for groundwater conservation and the control of soil salinization

Liu²,

et al. 2022

Land Degrad Dev

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Soil salinization and water deficits in gully consolidation farmland including excavated farmland (EF) and sediment deposited farmland (SF) have become an increasing concern in the Loess Hilly region, China. However, the responses of different farmland types and tillage-mulching practices on soil salt content (SSC) and water use efficiency (WUE) have not been widely studied in this region. Thus, we conducted a two-year field experiment to assess the soil water content (SWC) and SSC and their effect on the spring maize yield and WUE under different tillage-mulching practices in EF and SF. Eight treatments incorporating flat cropping without mulching (FC), ridge planting without mulching (RP), ridge cropping with straw mulching (SM), and ridge cropping with plastic mulching (PM) were applied to EF and SF plots, respec-

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Excavated farmland treated with plastic mulching as a strategy for groundwater conservation and the control of soil salinization

Liu²,

et al. 2022

Land Degrad Dev

Self Cite

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“…The Yellow River Delta represents a typical humid-semi-humid salinization area with a high groundwater level and has serious problems associated with mineralization and salinization. In recent years, seawater intrusion has exacerbated the problems caused by salinization in the Yellow River Delta to the point of severely restricting the development of local agriculture (Zhou et al, 2017;Ke et al, 2021;Zhang et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Spatial and Temporal Pattern Changes and Driving Forces: Analysis of Salinization in the Yellow River Delta from 2015 to 2020

Mengmeng

Wang

Han

2022

Journal of Resources and Ecology

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China's Yellow River Delta represents a typical area with moist semi-humid soil salinization, and its salinization has seriously affected the sustainable use of local resources. The use of remote sensing technology to understand changes in the spatial and temporal patterns of salinization is key to combating regional land degradation. In this study, a feature space model was constructed for remote sensing and monitoring land salinization using Landsat 8 OIL multi-spectral images. The feature parameters were paired to construct a feature space model; a total of eight feature space models were obtained. An accuracy analysis was conducted by combining salt-loving vegetation data with measured data, and the model demonstrating the highest accuracy was selected to develop salinization inversion maps for 2015 and 2020. The results showed that: (1) The total salinization area of the Yellow River Delta displayed a slight upward trend, increasing from 4244 km 2 in 2015 to 4629 km 2 in 2020. However, the area's salting degree reduced substantially, and the areas of saline soil and severe salinization were reduced in size;(2) The areas with reduced salinization severity were mainly concentrated in areas surrounding cities, and primarily comprised wetlands and some regions around the Bohai Sea;(3) Numerous factors such as the implementation of the "Bohai Granary" cultivation engagement plan, increase in human activities to greening local residential living environments, and seawater intrusion caused by the reduction of sediment contents have impacted the distribution of salinization areas in the Yellow River Delta; (4) The characteristic space method of salinization monitoring has better applicability and can be promoted in humid-sub humid regions.

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Agricultural Land Degradation in China

Zuo

et al. 2022

The Handbook of Environmental Chemistry

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Rainstorm events increase risk of soil salinization in a loess hilly region of China

Cited by 9 publications

References 35 publications

Excavated farmland treated with plastic mulching as a strategy for groundwater conservation and the control of soil salinization

Excavated farmland treated with plastic mulching as a strategy for groundwater conservation and the control of soil salinization

Spatial and Temporal Pattern Changes and Driving Forces: Analysis of Salinization in the Yellow River Delta from 2015 to 2020

Agricultural Land Degradation in China

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