scholarly journals Silicon and Aluminum Mobility in Soils of Jeju Island, Korea

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Won-Pyo Park ◽  
Bon-Jun Koo
Keyword(s):  
Clay Minerals ◽  
Volcanic Ash ◽  
Jeju Island ◽  
Annual Precipitation ◽  
Mean Annual Precipitation ◽  
Soil Series ◽  
High Concentration ◽  
Volcanic Ash Soil ◽  
Low Altitude ◽  
Volcanic Ash Soils

The objective of the study is to investigate the effect of released silicon (Si) and aluminum (Al) during the formation of volcanic ash soil on the content of Si in groundwater on Jeju Island. Volcanic ash soils in Jeju Island were formed from pyroclastic materials that originated from basalt. We sampled four profiles, including basaltic bedrock of each soil series with large variations in elevation (160–320 m) and mean annual precipitation (MAP; 1,800–2,600 mm). The soil and bedrock minerals were analyzed for weathering of volcanic ash soils related to mineralogical transformations and mobility of Si and Al. Andisols (above 2,000 mm MAP) were dominantly composed of allophane and gibbsite. In Andisols used in the study, 10–70% of Si was lost, whereas the amount of Al was relatively conserved. This is because Al forms Al-humus complex and Andisols contain allophane. In contrast, non-Andisols located at low altitude with lower than 1,800 mm MAP were enriched with considerable amounts of Si and Al, because non-Andisols have crystalline clay minerals and quartz. These results indicate that Andisols, which are widely distributed in Jeju Island, may play an important role in contributing to the high concentration of dissolved Si in the groundwater.

Specific Retention of Radiocesium in Volcanic Ash Soils Devoid of Micaceous Clay Minerals

2004 ◽  
Vol 68 (1) ◽  
pp. 313 ◽  
Author(s):  
Emmanuel Joussein ◽  
Nathalie Kruyts ◽  
Dominique Righi ◽  
Sabine Petit ◽  
Bruno Delvaux
Keyword(s):  
Clay Minerals ◽  
Volcanic Ash ◽  
Specific Retention ◽  
Volcanic Ash Soils

scholarly journals Sorption and leaching characteristics of pesticides in volcanic ash soils of Jeju Island, Korea

2020 ◽  
Vol 63 (1) ◽  
Author(s):  
Won-Pyo Park ◽  
Kong-Man Chang ◽  
Hae-Nam Hyun ◽  
Kyung-Hwan Boo ◽  
Bon-Jun Koo
Keyword(s):  
Volcanic Ash ◽  
Agricultural Soils ◽  
Distribution Coefficients ◽  
The Other ◽  
Jeju Island ◽  
European Standard ◽  
Leaching Behavior ◽  
Mobility Assessment ◽  
Leaching Characteristics ◽  
Volcanic Ash Soils

Abstract It is important to evaluate leaching behavior in agricultural soils to prevent the pollution of groundwater by pesticides. We identified the distribution coefficients (Kd) of ten pesticides with different physicochemical properties and compared their leaching characteristics using wick lysimeters from three distinct soil types on Jeju Island. The Kd values varied by pesticide and soil, but were within the range of 1.2 to 4231 L kg−1. Based on the European standard (Kd < 10 L kg−1), six pesticides (alachlor, ethoprophos, carbofuran, napropamide, tebuconazole, and etridiazole) were mobile in at least one tested soil, and their soil organic carbon affinity was ≤ 5.811. This value differed greatly from the other pesticides (16.533 and higher). The solubility of the six mobile pesticides was ≥ 32 mg L−1, which substantially differed from the other pesticides (≤ 0.71 mg L−1). Thus, we conclude that our mobility assessment, which is based on Kd values, can be used to predict the leaching of pesticides in the volcanic ash soils of Jeju Island. The use of pesticides should be strictly controlled to reduce the possibility of groundwater contamination.

CLAY MINERALS OF SOME WELL-DRAINED VOLCANIC ASH SOILS IN JAPAN

Soil Science ◽  
1955 ◽  
Vol 79 (5) ◽  
pp. 349-358 ◽  
Author(s):  
SHIGENORI AOMINE ◽  
NAGANORI YOSHINAGA
Keyword(s):  
Clay Minerals ◽  
Volcanic Ash ◽  
Volcanic Ash Soils

scholarly journals Fresh litter acts as a substantial phosphorus source of plant species appearing in primary succession on volcanic ash soil

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sae Katayama ◽  
Takayuki Omori ◽  
Masaki Tateno
Keyword(s):  
Organic Matter ◽  
Volcanic Ash ◽  
Inorganic Nitrogen ◽  
Inorganic Phosphorus ◽  
Natural Vegetation ◽  
Nitrogen Fixing ◽  
Volcanic Ash Soil ◽  
Phosphorus Source ◽  
Fresh Litter ◽  
Volcanic Ash Soils

AbstractPlants have difficulty absorbing phosphorus from volcanic ash soils owing to the adsorption of phosphorus by aluminum and iron in the soils. Thus, on volcanic ash soils, the phosphorus source for natural vegetation is expected to be organic matter, however, there is a lack of experimental evidence regarding this occurrence. Here, we studied the effect of organic matter on plant growth of some species that occur in primary successions of volcanic ash soil ecosystems, based on growth experiments and chemical analyses. We found that a large amount of inorganic phosphorus (but only a limited amount of inorganic nitrogen) is leached from fresh leaf litter of the pioneer spices Fallopia japonica at the initial stage of litter decomposition. Phosphorus from the fresh litter specifically activated the growth of subsequently invading nitrogen-fixing alder when immature volcanic soil was used for cultivation. In contrast, old organic matter in mature soil was merely a minor source of phosphorus. These results suggest that fresh litter of F. japonica is essential for growth of nitrogen-fixing alder because the litter supplies phosphorus. We consider that rapid phosphorus cycles in fresh litter-plant systems underlie the productivity of natural vegetation even in mature ecosystems established on volcanic ash soils.

Specific Retention of Radiocesium in Volcanic Ash Soils Devoid of Micaceous Clay Minerals

2004 ◽  
Vol 68 (1) ◽  
pp. 313-319 ◽  
Author(s):  
Emmanuel Joussein ◽  
Nathalie Kruyts ◽  
Dominique Righi ◽  
Sabine Petit ◽  
Bruno Delvaux
Keyword(s):  
Clay Minerals ◽  
Volcanic Ash ◽  
Specific Retention ◽  
Volcanic Ash Soils

Surface properties and clay mineralogy of hydrated halloysitic soil clays. II: Evidence for the presence of halloysite/smectite (H/Sm) mixed-layer clays

Clay Minerals ◽  
1990 ◽  
Vol 25 (2) ◽  
pp. 141-160 ◽  
Author(s):  
B. Delvaux ◽  
A. J. Herbillon ◽  
L. Vielvoye ◽  
M. M. Mestdagh
Keyword(s):  
Clay Minerals ◽  
Surface Properties ◽  
Mixed Layer ◽  
Volcanic Ash ◽  
Clay Mineralogy ◽  
Soil Weathering ◽  
Soil Clays ◽  
Mixed Layers ◽  
Exchange Selectivity ◽  
Volcanic Ash Soils

AbstractSix clays from volcanic ash soils at different stages of weathering differ in their relative halloysite content with respect to kaolinite and several surface properties, namely CEC, and exchange selectivity for K+. These three parameters are related to each other in that they all decrease with increasing soil weathering stage. XRD data show that the hydrated 1:1 layer-silicates in these clays combine with smectite to form interstratified H/Sm clay minerals. In these mixed-layers, the content and layer charge of smectitic units decrease as the relative halloysite content in the clay decreases. These clays thus depict a weathering sequence that is parallel to the weathering sequence of the soils from which they originate. It is also shown that the smectites in the H/Sm minerals have the distinctive composition and ESR spectrum of Fe-rich 2:1 clay minerals belonging to the beidellite-nontronite series. The information obtained explains why these clays have high CEC and distinct affinities for K+. It is hoped that this study will help to clarify the controversy concerning the CEC and related surface properties attributed to hydrated halloysite.

scholarly journals Assessment of Riverbed Sediments Originated from Volcanic Ash Soils in Jeju Island

2019 ◽  
Vol 22 (4) ◽  
pp. 303-311
Author(s):  
Ki Moon Bong ◽  
Hae Jong Yang ◽  
Tae-Woo Kang ◽  
Jong Hak Han ◽  
Hyo Jin Jeong ◽  
...  
Keyword(s):  
Volcanic Ash ◽  
Jeju Island ◽  
Riverbed Sediments ◽  
Volcanic Ash Soils
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