Consequence of Seawater Intrusion on Soil Properties in Agricultural Areas 
of Nonthaburi Province, Thailand

Phankamolsil, Napaporn; Sonsri, Kiattisak; Phankamolsil, Yutthana

doi:10.35762/aer.2021.43.2.6

Cited by 3 publications

(2 citation statements)

References 32 publications

(40 reference statements)

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“…The impacted GDP (PPP) accounts for 96% of Bangkok's total GDP (PPP) and is the highest among seven major Asian cities (Hong Kong, Tokyo, Jakarta, Seoul, Taipei, and Manila) [102]. Negative impacts of seawater intrusion on soil, crop productivity and municipal water in the Lower Central Plain of Thailand were also documented [68][69][102][103]. A recent study has confirmed that the groundwater quality in the Lower Chao Phraya River Basin in Thailand has deteriorated due to salinization caused by seawater intrusion [104].…”

Section: Potential Impacts Of Soces In Thailandmentioning

confidence: 99%

Changes in slow-onset climate events in Thailand

Limsakul,

Kammuang,

Paengkaew

et al. 2023

Environmental Engineering Research

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Slow-onset climate events (SOCEs) cause substantial impacts on human and natural systems, but research on exploring SOCEs and their effects is still limited. Therefore, changes of SOCEs in Thailand were statistically analysed based on a set of data including projected mean temperature, gridded altimetry sea level, salinity, and areal forest cover. Related information from available studies and reports was also compiled to complement our analysis. The important observed changes of SOCEs included (i) Thailand’s mean temperature gradually rising towards the end of the 21<sup>st</sup> century, (ii) steady sea level rise accompanied by concomitant seawater intrusion, (iii) increasing areas of land degraded and affected by desertification, (iv) general decline in total forest cover with forest fires tending to increase over recent years, and (v) various plant and vertebrate species under multi-threats with most of them projected to considerably decline due to future climate change. Changes of SOCEs seem to have broad-ranging impacts on ecosystems and the well-being and health of Thai people. This study presented additional evidence and knowledge, responding well to the urgent needs to address SOCE<sub>S</sub> in developing countries. To better avert, minimise and address loss and damage from SOCEs, however, future studies, especially quantitative assessment, are needed.

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Section: Potential Impacts Of Soces In Thailandmentioning

confidence: 99%

Changes in slow-onset climate events in Thailand

Limsakul,

Kammuang,

Paengkaew

et al. 2023

Environmental Engineering Research

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“…The seawater intrusion on agricultural soil properties in Nonthaburi increased the electric conductivity (EC) and sodium adsorption ratio (SAR) to approximately 0.21-4.38 dS m −1 and 8.29-41.89, respectively, which are higher than the annual average value [7]. Moreover, in the northeast of Thailand, approximately 17% of its land area is affected by salt from rock salt and the accumulated effects from human activities [8].…”

Section: Introductionmentioning

confidence: 99%

Association of a Specific OsCULLIN3c Haplotype with Salt Stress Responses in Local Thai Rice

Herwibawa,

Lekklar,

Chadchawan

et al. 2024

IJMS

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We previously found that OsCUL3c is involved in the salt stress response. However, there are no definitive reports on the diversity of OsCUL3c in local Thai rice. In this study, we showed that the CUL3 group was clearly separated from the other CUL groups; next, we focused on OsCUL3c, the third CUL3 of the CUL3 family in rice, which is absent in Arabidopsis. A total of 111 SNPs and 28 indels over the OsCUL3c region, representing 79 haplotypes (haps), were found. Haplotyping revealed that group I (hap A and hap C) and group II (hap B1 and hap D) were different mutated variants, which showed their association with phenotypes under salt stress. These results were supported by cis-regulatory elements (CREs) and transcription factor binding sites (TFBSs) analyses. We found that LTR, MYC, [AP2; ERF], and NF-YB, which are related to salt stress, drought stress, and the response to abscisic acid (ABA), have distinct positions and numbers in the haplotypes of group I and group II. An RNA Seq analysis of the two predominant haplotypes from each group showed that the OsCUL3c expression of the group I representative was upregulated and that of group II was downregulated, which was confirmed by RT-qPCR. Promoter changes might affect the transcriptional responses to salt stress, leading to different regulatory mechanisms for the expression of different haplotypes. We speculate that OsCUL3c influences the regulation of salt-related responses, and haplotype variations play a role in this regulation.

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Interactive influences of salinity and sodicity levels on depth-wise soil organic matter and micronutrient elements in Thailand

Phankamolsil,

Tengprasert,

Kheoruenromne

et al. 2024

Environ. Res. Commun.

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Soil salinity and sodicity are the major environmental issues that lead to the deterioration of soil properties, nutrient cycling, and soil ecosystems around the globe. Nevertheless, the reciprocal effects of salinity and sodicity levels on depth-wise soil organic matter (SOM) and micronutrients remain elusive, particularly in Thailand. For a better understanding of such an issue, soil samples were collected from 38 sites at depths of 0–20, 30–50, 60–80, and 80–120 cm where they were affected by salts with variable levels of salinity and sodicity, having electrical conductivity (ECe), and exchangeable sodium percentage (ESP) from 0.20–74.70 dS m–1, and 2.74%–113.23%, respectively. Soil physicochemical properties, including distribution of sand, silt, and clay, pH, soil organic carbon (SOC), and micronutrients (Fe, Zn, Mn, Cu, and B) were determined. The results exhibited that SOC content, ranging from 3.36–14.74 g kg–1, was higher in topsoil (0–20 cm) compared to the other three soil depths and it correlated negatively with ECe (0–20 and 80–120 cm) and ESP (80–120 cm), suggesting the declines in SOC amount due to high salinity and sodicity levels. Topsoil Mn concentration (0.06–182.06 mg kg–1) also tended to be greater than the other soil depths while Fe concentration in that soil depth (0.02–33.99 mg kg–1) tended to be smaller. The ECe correlated negatively with the concentrations of Fe, Cu (all soil depths), and Zn (30–50 and 60–80 cm), and positively with Mn concentration (60–80 and 80–120 cm), suggesting that the availability of Fe Cu and Zn is vulnerable to high salinity and sodicity levels. Overall, our findings highlight that high salinity and sodicity levels brought about a reduction in SOC content and low concentrations of micronutrients in soils, irrespective of Mn concentration.

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Consequence of Seawater Intrusion on Soil Properties in Agricultural Areas of Nonthaburi Province, Thailand

Cited by 3 publications

References 32 publications

Changes in slow-onset climate events in Thailand

Changes in slow-onset climate events in Thailand

Association of a Specific OsCULLIN3c Haplotype with Salt Stress Responses in Local Thai Rice

Interactive influences of salinity and sodicity levels on depth-wise soil organic matter and micronutrient elements in Thailand

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