Successive simulations of soil water-heat-salt transport in one whole year of agriculture after different mulching treatments and autumn irrigation

XingHang, Lu; Li, Ruiping; Shi, Haibin; Liang, Jiansheng; Miao, Qingfeng; Fan, Leilei

doi:10.1016/j.geoderma.2019.03.006

Cited by 48 publications

(18 citation statements)

References 7 publications

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“…Significant salt accumulations in topsoil were observed in the three landscapes. This is consistent with the results of Lu et al (2019) and Wu et al (2019), who reported that soil freezing and thawing processes clearly increased the risk of soil salinization. The mechanism of soil salinization caused by freezing and thawing can be explained as follows: during the freezing stage, the dissolved salt is brought to the topsoil from the subsoil by upward water flux due to the soil water potential difference and results in increased salinity in the topsoil.…”

Section: Impacts Of Land Use Soil Evaporation and Groundwater Tablesupporting

confidence: 93%

“…Different land uses usually correspond to different land cover and vegetation root conditions. For woodland, the fallen leaves covered in the soil surface are similar to straw mulch, which can prevent heat transfer from soil to atmosphere in winter (Lu et al, 2019;Yi et al, 2014), and thus weaken and delay the soil freeze-thaw processes. In addition, Zhang et al (2019) pointed out that the roots of Salix psammophila could increase soil temperatures during freeze-thaw periods.…”

Section: Avg Daily Soil Evaporation Proportion Of Soil Evaporationmentioning

confidence: 99%

“…This might be because the highest initial salt content occurred in the cropland topsoil and the lowest initial salt content occurred in woodland topsoil. Higher soil salinities result in lower freezing points and higher liquid soil water contents (Lu et al, 2019), causing greater soil evaporation. During SFS, soil was in a stable frost condition with very low liquid soil water contents for all landscapes; therefore, no significant differences in soil evaporation were found among the three landscapes.…”

Section: Impacts Of Meteorological Conditions Land Use and Groundwamentioning

confidence: 99%

“…This result may mainly be attributed to the differences in evaporation and salt movement for different landscapes. Upward movement of dissolved salt is a process associated with soil water movement (Lu et al, 2019;Wu et al, 2019). Therefore, the differences in these two critical processes among the three landscapes cause different salt accu-mulations in topsoils (Bing et al, 2015;Li, Shi, Flerchinger, Zou, & Li, 2013;).…”

Section: Impacts Of Land Use Soil Evaporation and Groundwater Tablementioning

confidence: 99%

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Soil evaporation and its impact on salt accumulation in different landscapes under freeze–thaw conditions in an arid seasonal frozen region

Sheng

Huang

Ren

et al. 2021

Vadose Zone Journal

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Soil evaporation and its associated processes are vital for agricultural production and ecosystems in seasonal frozen regions. However, soil evaporation and its impact on salt accumulation in different landscapes during freeze-thaw periods have not been well elucidated. In this study, field experiments were carried out to investigate soil evaporation and salt accumulation patterns in three typical landscapes-namely, cropland, woodland, and natural land-in an arid seasonal frozen region located in the upper reaches of the Yellow River basin from November 2018 to April 2019. The results indicated the highest soil evaporation occurred on natural land with a total amount of 148.5 mm during the freeze-thaw period from 2018 to 2019, whereas woodland had the smallest soil evaporation of 56.9 mm. Over 75% of soil evaporation occurred during the thawing stage for all three landscapes. The average daily evaporation was below 1 mm d-1 for the whole freeze-thaw period and was 0.1 mm d-1 for the stable freezing stage. Compared with humidity and wind speed, temperature and soil water content had a greater impact on soil evaporation. At the end of the thawing stage, the salt content in the topsoil (0-10 cm) layer increased significantly with an increasing rate of 70-225%. Salt concentrations in the topsoil were significantly and linearly related to the cumulative soil evaporation during the freeze-thaw period. The current research is expected to provide implications for water management and salinity control in the upper reaches of the Yellow River basin and in other arid regions with similar conditions.

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Section: Impacts Of Land Use Soil Evaporation and Groundwater Tablesupporting

confidence: 93%

Section: Avg Daily Soil Evaporation Proportion Of Soil Evaporationmentioning

confidence: 99%

Section: Impacts Of Meteorological Conditions Land Use and Groundwamentioning

confidence: 99%

Section: Impacts Of Land Use Soil Evaporation and Groundwater Tablementioning

confidence: 99%

See 2 more Smart Citations

Soil evaporation and its impact on salt accumulation in different landscapes under freeze–thaw conditions in an arid seasonal frozen region

Sheng

Huang

Ren

et al. 2021

Vadose Zone Journal

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show abstract

“…Stones, biochar, straw or other crop residues, and plastic film have been widely used as mulching materials (Li, Wang, Li, Gao, & Tian, 2013b; Philips, Meyer, & Trippe, 2020). Mulching can regulate soil water and thermal factors; change the microenvironment of farmlands (Chen, Zhang, Sun, & Chen, 2007; Lu et al., 2019; Wang, Gong, & Xing, 2020); and affect the stomatal response, photosynthesis, and transpiration of crops; ultimately, mulching affects growth and WUE (Fan et al., 2017). Therefore, it was the necessary to find the best mulching treatment in desert oases in China.…”

Section: Introductionmentioning

confidence: 99%

Photosynthetic light response models for spring wheat mulching treatments in a northwestern China desert oasis

Song

Wang

2021

Crop Science

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In the desert oasis areas of northwestern China, mulching treatments are an effective method for alleviating drought in agricultural production. Four mulching treatments of polyacrylamide (PAM), which is a water retention agent; plastic film; stones; straw; plus an unmulched control treatment were used in the field to explore their influence on soil water content (SWC), soil temperature, the net photosynthetic rate (Pn), leaf area index (LAI), and yield in spring wheat (Triticum aestivum L.). Six light response models were used to simulate the light response of wheat. A significant difference was found between straw and the control vs. the other mulching treatments in terms of grain yield and yield components of spring wheat (p < .05). Under the film treatment, the yield increased by 9.8–16.9% and the water use efficiency (WUE) increased by 20% in 2012 and 23% in 2013. Compared with PAM, stone, straw, and the control, the film mulch had the largest maximum photosynthesis and the largest rate of light adaptation. The nonrectangular hyperbolic had the smallest error and simulated the best photosynthetic light response. Compared with the control treatment, the soil temperatures were reduced by a mean of 8.5–11.3 °C and the average SWC increased by 5.5–3.2% under all mulching treatments. However, SWC had a greater effect on Pn than soil temperature during the growth season under the mulching treatments, which increased yield in this arid environment. Film mulching was the best mulching treatment for spring wheat in this desert oasis.

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Soil moisture variability affected by sand mulch: An isotope‐based assessment of irrigated farmland in Northwest China

et al. 2022

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As a practical agricultural technique in Northwest China, the sand mulch reduces the soil moisture loss of irrigated farmland under an arid setting. To understand the soil moisture variability affected by sand mulch, we selected an irrigated orchard of peach (Amygdalus persica L.) in Northwest China and examined the soil moisture movement conditioned by irrigation using a stable water isotope method. Based on the isotopic variability of continuously collected soil, plant, and irrigation water samples, the infiltration and evaporation of soil moisture were assessed. The results showed that (1) during the sampling period, the average soil water content and infiltration volume of the sand mulch plot were 1.63% and 6.82%, respectively, which are higher than those of the uncovered plot, indicating a better soil water retention after sand mulch. (2) The slope of the evaporation line of the sand mulch plot (4.79) was greater than that of the uncovered plot (4.11), and the average evaporation loss of the sand mulch plot (0–30 cm) was 10.29% lower than that of the uncovered plot. The average evaporation rate of the sand mulch plot was 5.02% per day, which is lower than that of the uncovered plot 8.41% per day. The isotope‐based evidence shows that sand mulch effectively reduces soil water evaporation, which provides a theoretical basis for agricultural water management and optimization of water‐saving methods for arid land.

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Successive simulations of soil water-heat-salt transport in one whole year of agriculture after different mulching treatments and autumn irrigation

Cited by 48 publications

References 7 publications

Soil evaporation and its impact on salt accumulation in different landscapes under freeze–thaw conditions in an arid seasonal frozen region

Soil evaporation and its impact on salt accumulation in different landscapes under freeze–thaw conditions in an arid seasonal frozen region

Photosynthetic light response models for spring wheat mulching treatments in a northwestern China desert oasis

Soil moisture variability affected by sand mulch: An isotope‐based assessment of irrigated farmland in Northwest China

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