Landscape evolution and agricultural land salinization in coastal area: A conceptual model

Bless, Aplena Elen; Colin, François; Crabit, Armand; Devaux, Nicolas; Philippon, Olivier; Follain, Stéphane

doi:10.1016/j.scitotenv.2017.12.083

Cited by 30 publications

(20 citation statements)

References 24 publications

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“…This area is characterized by salinity, with total salinity of 4-10 g/kg soil, partly explained by extreme weather and coal industrial pollution [2]. Excessive salt ions in soil will cause native plants to exhibit decreased growth height, weaker photosynthetic capacity, a disordered oxidation defense system, lower nutrient absorption and even death, eventually resulting in ecological environment deterioration [3][4][5]. Many techniques are employed to restore saline soils, among which the application of soil microorganisms in saline soils is considered a bio-amelioration method for plants [6].…”

Section: Introductionmentioning

confidence: 99%

Arbuscular mycorrhizal fungi (AMF) enhance the tolerance of Euonymus maackii Rupr. at a moderate level of salinity

Meng

et al. 2020

PLoS ONE

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Salt stress is one of the major environmental constraints for plant growth. Although the ways in which mycorrhizal plants deal with salt stress have been well documented, it still is blank for Euonymus maackii, an important local ecological restoration tree, to arbuscular mycorrhizal fungi (AMF) inoculation and salt stress. In this study, we tested the effect of different salt levels (0, 50, 100,150 and 200 mM) and AMF inoculation on E. maackii growth rate, photosynthesis, antioxidant enzymes, nutrient absorption and salt ion distribution. The results indicated negative effect of salt on height, photosynthesis capacity, nutrition accumulation, while salt stimulated the antioxidant defense system and salt ions accumulation. The toxic symptom by excessive accumulation of salt ions worsen with salt level increased gradually (except for the 50 mM NaCl treatment). AMF inoculation alleviated the toxic symptom under moderate salt levels (100 and 150 mM) by increasing photosynthesis capacity, accelerating nutrient absorption and activating antioxidant enzyme activities under salt stress. Meanwhile, effect of AMF was not detected on seedlings under slight (0 and 50 mM) and high (200 mM) NaCl concentration. Our study indicated AMF had positive impact on E. maackii subjected to salt, which suggested potential application of AMF-E. maackii on restoration of salt ecosystems.

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Section: Introductionmentioning

confidence: 99%

Arbuscular mycorrhizal fungi (AMF) enhance the tolerance of Euonymus maackii Rupr. at a moderate level of salinity

Meng

et al. 2020

PLoS ONE

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“…Land resources worldwide are being irreversibly reduced and degraded because of anthropogenic pressures, variations in land use patterns and climate change [1,2]. An important example is soil salinization, which constitutes one of the most widespread soil degradation processes on Earth [3,4].…”

Section: Introductionmentioning

confidence: 99%

A Harmonious Satellite-Unmanned Aerial Vehicle-Ground Measurement Inversion Method for Monitoring Salinity in Coastal Saline Soil

Zhang¹,

Zhao²

2019

Remote Sensing

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Soil salinization adversely impacts crop growth and production, especially in coastal areas which experience serious soil salinization. Therefore, rapid and accurate monitoring of the salinity and distribution of coastal saline soil is crucial. Representative areas of the Yellow River Delta (YRD)—the Hekou District (the core test area with 140 sampling points) and the Kenli District (the verification area with 69 sampling points)—were investigated. Ground measurement data, unmanned aerial vehicle (UAV) multispectral imagery and Sentinel-2A multispectral imagery were used as the data sources and a satellite-UAV-ground integrated inversion of the coastal soil salinity was performed. Correlation analyses and multiple regression methods were used to construct an accurate model. Then, a UAV-based inversion model was applied to the satellite imagery with reflectance normalization. Finally, the spatial and temporal universality of the UAV-based inversion model was verified and the soil salinity inversion results were obtained. The results showed that the green, red, red-edge and near-infrared bands were significantly correlated with soil salinity and the spectral parameters significantly improved this correlation; hence, the model is more effective upon combining spectral parameters with sensitive bands, with modeling precision and verification precision of the best model being 0.743 and 0.809, respectively. The reflectance normalization yielded good results. These findings proved that applying the UAV-based model to reflectance normalized Sentinel-2A images produces results that are consistent with the actual situation. Moreover, the inversion results effectively reflect the distributions characteristic of the soil salinity in the core test area and the study area. This study integrated the advantages of satellite, UAV and ground methods and then proposed a method for the inversion of the salinity of coastal saline soils at different scales, which is of great value for real-time, rapid and accurate soil salinity monitoring applications.

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“…La pluviométrie n'aété que de 350 mm d'eau en 2017 dans les départements de l'Aude (11000) et l'Hérault (34000). Des remontées de sel dans des plaines littorales du sud de la France sont observées, suites aux années 2015à 2017 particulièrement sèches [11]. Maintenant les flux d'eau −naturellement douce− nécessaires ne sont pas toujours disponibles pour corriger ces remontées de sel.…”

Section: Les Risques De Salinisation Des Solsunclassified

Maitrise de la salinité des eaux d'irrigation pour la viticulture

et al. 2019

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Même si la vigne reste parmi les plantes cultivées une des plus économes en eau, se pose maintenant la question de la disponibilité et de l'accessibilité à la ressource en eau naturelle de qualité: eaux souterraines (infiltration, nappes), eaux de surface stagnantes (lacs, retenues de barrages) ou en écoulement (rivières, fleuves), eaux de mer, eaux usées traitées (REUT). Certaines de ces eaux peuvent contenir des composés d'intérêts nutritionnels pour les plantes, mais aussi être riches en sels dissous. L'objet de cette communication est d'étudier les technologies permettant d'affiner la teneur en sel de l'eau d'irrigation pour la vigne, quel que soit son origine et son niveau initial. Les techniques membranaires, osmose inverse, nanofiltration et électrodialyse sont ainsi comparées techniquement et évaluées économiquement. Les unes, nanofiltration et osmose inverse, à partir de membranes poreuses ou denses sous pression, consiste en une séparation de quasi tous les éléments dissous de l'eau (anions, cations, mais y compris les nutriments azotés, et minéraux) et ce quel que soit, pour l'osmose inverse, la salinité de l'eau initiale (e.g. eau de mer). L'autre l'électrodialyse, à partir de membranes denses ne filtre pas l'eau, mais extrait une quantité pilotable en ligne, de sels dissous (Na+ et Cl− en particulier sélectionnables) sous l'effet d'un champ électrique, afin de l'adapter aux sols ou plantes concernés

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Landscape evolution and agricultural land salinization in coastal area: A conceptual model

Cited by 30 publications

References 24 publications

Arbuscular mycorrhizal fungi (AMF) enhance the tolerance of Euonymus maackii Rupr. at a moderate level of salinity

Arbuscular mycorrhizal fungi (AMF) enhance the tolerance of Euonymus maackii Rupr. at a moderate level of salinity

A Harmonious Satellite-Unmanned Aerial Vehicle-Ground Measurement Inversion Method for Monitoring Salinity in Coastal Saline Soil

Maitrise de la salinité des eaux d'irrigation pour la viticulture

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