JA participated as analytical responsible for lead in soil determination.
FVP participated as responsible for Lead in soil determination and designed the soil sampling.
For soil property determination, disturbed and undisturbed soil samples were collected for laboratory tests which included in-situ density measurement, grain size distribution analysis and triaxial compression tests.
This was in line with FAO (1999) recommendation that soil salinity determination should be conducted during the irrigation season to account for salts brought by the irrigation water.
Soil pH determination was carried out using a 1 2 (soil: water) ratio with a glass electrode pH meter and electrical conductivity in deionized water suspension of 1 5 (w/v).
Then, taking the New Kitakyushu Airport Project as an example, the authors describe the ground improvement employed, the prediction method of reclaimed soil profile, determination of consolidation parameters of reclaimed clay layer and the results of observation.
Addition of N as N H 4 + in the present study (as well as acid extraction for soil Si determination) likely achieved a similar result, suggesting that cultural practices, including addition of organic matter and associated increased microbial respiration, can be used to promote the dissolution of slags and improve crop Si uptake (Kato and Owa 1997; Ma and Takahashi 2002).
Treatment effects were evaluated through the following determinations: soil organic carbon, aggregates stability, mean weight diameter, aggregates larger than 2 mm, and soil macroaggregates and microaggregates.
The knowledge obtained from this information is vital for the sustainable use of water resources, rational management of various land uses, and scientific determinations of soil water in deep soils on the CLP and possibly in other fragile ecosystems covered by deep soils around the world.
Strain gage pressure transducers are most frequently used for soil stress state determinations.
