Identification of Saline Soils Using Soil Geochemical Data: A Case Study in Soda-Salinization Areas, NE China

Lan, Tian; Lu, Jilong; Hao, Libo; Rong-jie, Bai; Sun, Xiaoyan; Zhao, Xinyun; Wang, Yongzhi

doi:10.3390/su15129302

Cited by 2 publications

(1 citation statement)

References 23 publications

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“…Although new technologies, such as geostatistics or remote sensing, provide a viable alternative to traditional fieldwork, due to their large area coverage (Metternicht & Zinck, 2003;Taghizadeh-Mehrjardi et al, 2014), traditionally soil salinity monitoring is often carried out with intensive fieldwork and sampling (Bao et al, 2019;FAO, 1999;Lan et al, 2023;Shen et al, 2023;Thiam et al, 2021). With that premise in mind, the study was initially approached by taking field samples for subsequent laboratory analysis and, finally, a geostatistical evaluation of the results.…”

Section: Spatial Variability Of Soil Salinity In the Wetland Using Id...mentioning

confidence: 99%

Pedological features of a sustainable halophyte wetland: El Hito saline pond (Central Spain)

Jiménez‐Ballesta,

Cirujano‐Bracamonte,

Palencia‐Mayordomo

et al. 2024

European J Soil Science

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In semi‐arid Mediterranean regions, particularly in some wetland soils, salinity is thought to be an indicator of low‐quality soils. In this study, a characterization is presented of the soils surrounding El Hito saline pond (Castilla La Mancha, Central Spain), an ecological halophyte niche within a natural semi‐arid steppe land. The main aim is to classify the salt‐affected soils and their morphology, genesis, and physico‐chemical properties. Four soil profiles were opened with a backhoe machine for sampling and subsequent description on the basis of their pedogenetic morphology. Systematic surface sampling was also performed. Standard methods were followed to measure the soil properties of 27 samples. Overall electrical conductivity (EC) and pH levels of the wetland were mapped (using ArcGIS 3.1.3). Soil salinity at elevated levels was detected, inhibiting plant uptake of water and nutrients. Distinct sub‐areas of extreme elevated surface salinity providing specialized plant habitats and poor soil structure were observed, as well as a mainly whitened‐yellowish‐greenish soil colour due to salt accumulation and poor drainage. The soils also showed alkaline pH values. In most samples, the pH was over 8.5, and EC was higher than 4 (dS m−1), and in several samples higher than 20 (dS m−1). A low sodium (Na) content was detected in the saturation extract where magnesium (Mg+) was the dominant soluble cation, followed by both calcium (Ca+) and sodium (Na+), and then potassium (K+), present in lower proportions. Sulphate (SO42−) and then chloride (Cl−) anions were dominant, although carbon trioxide, (CO3−) and carbonate (CO32−) anions were also present. The percentages of organic carbon (C) were very low, while total nitrogen (TN) and available phosphorus (P) were higher in the upper horizons, suggesting a degree of eutrophication. The present work will increase the existing knowledge about the role of El Hito saline pond, that play a vital ecological role in the broader biosphere, providing new suggestions to readers on how this knowledge can be used to improve these types of ecosystems. In particular, the agricultural pesticides and fertilizers continuously damage the soil fertility as evidenced by the high content of soluble phosphorus found in some points of the Hito saline pond.

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Section: Spatial Variability Of Soil Salinity In the Wetland Using Id...mentioning

confidence: 99%

Pedological features of a sustainable halophyte wetland: El Hito saline pond (Central Spain)

Jiménez‐Ballesta,

Cirujano‐Bracamonte,

Palencia‐Mayordomo

et al. 2024

European J Soil Science

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Maize, Peanut, and Millet Rotations Improve Crop Yields by Altering the Microbial Community and Chemistry of Sandy Saline–Alkaline Soils

Zhang,

Zhu,

Zhang

et al. 2024

Plants

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Crop rotation increases crop yield, improves soil health, and reduces plant disease. However, few studies were conducted on the use of intensive cropping patterns to improve the microenvironment of saline soils. The present study thoroughly evaluated the impact of a three-year maize–peanut–millet crop rotation pattern on the crop yield. The rhizosphere soil of the crop was collected at maturity to assess the effects of crop rotation on the composition and function of microbial communities in different tillage layers (0–20 cm and 20–40 cm) of sandy saline–alkaline soils. After three years of crop rotation, the maize yield and economic benefits rose by an average of 32.07% and 22.25%, respectively, while output/input grew by 10.26%. The pH of the 0–40 cm tillage layer of saline–alkaline soils decreased by 2.36%, organic matter rose by 13.44%–15.84%, and soil-available nutrients of the 0–20 cm tillage layer increased by 11.94%–69.14%. As compared to continuous cropping, crop rotation boosted soil nitrogen and phosphorus metabolism capacity by 8.61%–88.65%. Enrichment of Actinobacteria and Basidiomycota increased crop yield. Crop rotation increases microbial community richness while decreasing diversity. The increase in abundance can diminish competitive relationships between species, boost synergistic capabilities, alter bacterial and fungal community structure, and enhance microbial community function, all of which elevate crop yields. The obtained insights can contribute to achieving optimal management of intensive cultivation patterns and green sustainable development.

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Identification of Saline Soils Using Soil Geochemical Data: A Case Study in Soda-Salinization Areas, NE China

Cited by 2 publications

References 23 publications

Pedological features of a sustainable halophyte wetland: El Hito saline pond (Central Spain)

Pedological features of a sustainable halophyte wetland: El Hito saline pond (Central Spain)

Maize, Peanut, and Millet Rotations Improve Crop Yields by Altering the Microbial Community and Chemistry of Sandy Saline–Alkaline Soils

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