Geostatistical assessment of soil salinity and cropping systems used as soil phytoremediation strategy

Niñerola, Victoria Bas; Pedreño, José Navarro; Lucas, Ignacio Gómez; Pastor, Ignacio Meléndez; Vidal, Manuel Miguel Jordán

doi:10.1016/j.gexplo.2016.06.008

Cited by 23 publications

(23 citation statements)

References 19 publications

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“…Increasing salt concentrations in soil surface layers leads to higher levels of soil surface sealing, crust formation and soil compaction (Niñerola et al 2016). These problems are symptomatic of the weaker coherence and stronger clay dispersion that adversely affect soil aggregation and soil hydraulic properties in a salt-affected soil and consequently results in reduced plant productivity (Patra et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Increasing the okra salt threshold value with biochar amendments

Elshaikh

Liu

She

et al. 2017

Journal of Plant Interactions

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Soil salinity is a severe worldwide environmental problem that adversely affects soil properties and the crop growth such as okra. We hypothesized that biochar soil amendments could increase the okra salt threshold, alleviate salt stress and improve soil productivity. In this study, a pot experiment was conducted to investigate whether biochar could ameliorate the effects of salinity on okra plants. Three biochar amendment (BA) soil applications (0%, 5% and 10% by mass of soil) were considered for seven irrigation water salinity levels (0.75, 1.0, 2.0, 4.0, 5.0, 6.0 and 7.0 dS m −1) in a randomized block design with three replications. The Maas and Hoffman salt tolerance model was used to evaluate the effects of BA on okra plant growth parameters (e.g. yield, biomass) and water use efficiency for each salinity treatment. The results showed that increasing the soil salinity levels caused significant decreases in plant yields and yield components. However, biochar application rates of 5% and 10% increased the okra threshold by 19.7% and 81.2%, respectively, compared to the control (0%). The 10% biochar application rate also resulted in the greatest okra plant growth and increased yield, indicating that the effects of salt stress were ameliorated; moreover, the soil bulk density was decreased, and the water content was increased. Hence, biochar soil amendments could be considered as an important agronomic practice that could potentially overcome the adverse effects of salt stress.

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Section: Introductionmentioning

confidence: 99%

Increasing the okra salt threshold value with biochar amendments

Elshaikh

Liu

She

et al. 2017

Journal of Plant Interactions

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“…Soil salinization is a complex natural phenomenon under the impact of a large number of natural and human factors [7,44]. In terms of natural factors, Xilinguole grassland is one of the four natural grasslands in China.…”

Section: Driving Force Analysis Of Surface Mining On Soil Salinizationmentioning

confidence: 99%

Remote Sensing Monitoring of Soil Salinization Based on SI-Brightness Feature Space and Drivers Analysis: A Case Study of Surface Mining Areas in Semi-Arid Steppe

Yan

Zhang

et al. 2021

IEEE Access

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The real-time monitoring and driving force research of soil salinization in semi-arid grassland are of great significance for regional and local ecological environment protection, management, and sustainable development. We selected a typical "mine-town-agriculture-pastureland-industry" interlaced ecologically fragile area as the study area. Based on the method of SI (Salinization Index)-Brightness feature space, we constructed a new spectral index named Semi-Arid Steppe Salinization Index (SASSI), which is more suitable for soil salinization remote sensing monitoring in semi-arid steppe. The geodetector method was used to analyze the driving forces of the temporal-spatial changes of soil salinization. The results indicated that: (1) SASSI presented a high correlation with soil surface salt content (R 2 =0.7698), and made full use of multi-dimensional remote sensing information. SASSI can reflect the salinization status of surface soil. The indicator calculation was simple and easy to obtain, which was conducive to the quantitative analysis and monitoring of salinization.(2) The driving factors affecting the spatial distribution and change of soil salinization were water, surface mines, town, agriculture, industry, road network, and elevation. The salinized areas were mainly distributed around the wetlands of the Xilin River Basin, mining landscapes, and town landscapes. (3) The total area of salinized soil in the study area increased from 32.03 km 2 in 2002 to 150.46 km 2 in 2017. The area of salinized soil increased rapidly from 2005 to 2014, but the growth rate slowed down after 2014. The salinized soil was mainly located in the salt marsh wetland in 2002, however had spread to the whole study area in 2017. This study provides references for remote sensing monitoring of soil salinization and the impact of land use, topography and other natural factors on soil salinization in the semi-arid steppe.

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“…This feature is a manifestation of the salinity problem where most of the oasis soils are drained towards this low altitude salt marsh. Salinity is a major problem in the soils of the Egyptian Oases and around the world (Abd ElGhani, 2000;Elsaied, 2012;Elsaied et al, 2015;Satir and Berberoglu, 2016;Gorji et al, 2017 andNiñerola et al, 2017). According to the salinity classification levels of Richards (1954) soils of El-Harra Oasis are ranged from non-saline soils to the extremely saline soils with only eight non-saline stands and five extremely saline soils.…”

Section: Soil Propertiesmentioning

confidence: 99%

Habitat diversity and plant indicators of El-Harra Oasis, Western Desert, Egypt

Elsaied¹

2017

Int. J. Adv. Res. Biol. Sci

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Habitat diversity is one of the attractive concepts in ecology that reflects the wellbeing of ecological systems. A total of 30 stands were chosen to represent habitat diversity of El-Harra Oasis. Poaceae, fababceae and astraceae were the most common families with 33 species out of 79 species belonging to 29 families. Therophytes and Hemicryptophytes were the most common life forms with 72 % of the species recorded. Chorology of all non-cultivated taxa was investigated. Species richness, Shannon and Simpson diversity indices and evenness was calculated for each stand. Eighteen soil parameters were investigated and results showed large variation among stands. Seven vegetation groups were obtained from the Two-way cluster analysis classification. Environmental parameters correlation with vegetation groups were determined using DCA and DCCA. Significant factors were detected by one way analysis of variance among the seven vegetation groups. Results showed that soil salinity indicators, soil moisture content and soil particles were the most critical factors affecting the ecological diversity in El-Harra Oasis. Indicator species of the seven habitats were halotolreants or halophytes. Managing water resources and agriculture schemes should reduce the magnitudes of salinity problem in El-Harra Oasis.

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Geostatistical assessment of soil salinity and cropping systems used as soil phytoremediation strategy

Cited by 23 publications

References 19 publications

Increasing the okra salt threshold value with biochar amendments

Increasing the okra salt threshold value with biochar amendments

Remote Sensing Monitoring of Soil Salinization Based on SI-Brightness Feature Space and Drivers Analysis: A Case Study of Surface Mining Areas in Semi-Arid Steppe

Habitat diversity and plant indicators of El-Harra Oasis, Western Desert, Egypt

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