Bulletin of the Society of Sea Water Science, Japan
Online ISSN : 2185-9213
Print ISSN : 0369-4550
ISSN-L : 0369-4550
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Volume 69, Issue 5
Displaying 1-8 of 8 articles from this issue
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Greeting
Special Issue : “Salt Damage and Food Production of the World”
Commentary
Review
  • Salt-affected Soils and Management in Thailand
    Somsri ARUNIN, Pirach PONGWICHIAN
    2015 Volume 69 Issue 5 Pages 319-325
    Published: 2015
    Released on J-STAGE: September 26, 2016
    DOIhttps://doi.org/10.11457/swsj.69.319
    JOURNAL FREE ACCESS
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    The total area of salt-affected soils in Thailand are 2.302 million hectares, of which the inland saline soils are 1.904 million hectares and the rest are in the coastal areas. Slightly to moderately salt-affected inlands are generally used for rice cultivation or other cash crops. Appropriate agronomic practices include selection of salt tolerant species, use of organic amendments and green manure. Management of severely salt-affected soils requires rehabilitation, leaching and drainage, mulching and change in cropping pattern. Halophytes have a role in revegetation and contribute to environmental remediation. In addition, reforestation on the recharge uplands has been recommended to lower groundwater hence, control salination in the discharge zone. Engineering and agronomic on-farm management practices for coastal salt-affected soils must be tailored to cope with the specific agro-ecosystem. More integrated research of various fields are needed.
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Note
  • Improved Method for Seawater Lithium Isotopic Ratio Determination Using MC-ICP-MS
    Tomohiro TOKI, Sawako HESHIKI, Ryuichi SHINJO
    2015 Volume 69 Issue 5 Pages 326-331
    Published: 2015
    Released on J-STAGE: September 26, 2016
    DOIhttps://doi.org/10.11457/swsj.69.326
    JOURNAL FREE ACCESS
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    We developed a simple, accurate, and sensitive analytical method for determination of the lithium isotopic ratio of seawater, using a multi-collector ICP mass spectrometer（MC-ICP-MS）. The method involves a single-step column separation, and improvements in sensitivity and precision are achieved by the use of an X-type skimmer cone and relatively low plasma RF power on MC-ICP-MS. With this method, the δ7Li value in standard seawater（NASS-5）was measured to be ＋30.97 ± 0.31 ‰（2σ）, which is consistent with the reported value in previous studies. We obtained δ7Li ＝＋30.82 ‰ of surface seawater from the East China Sea, which is the same as those for open oceans, suggesting that the surface seawater is not influenced by meteoric water from the Eurasian Continent. As the sampling location is in the flow passage of the Kuroshio Current, the value represents the δ7Li value of the Kuroshio Current.
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Relay Essay (15)
Letter from Research Committees
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