SOIL PROPERTIES RELATED TO POTENTIAL PARTICULATE MATTER EMISSIONS (PM10) OF SANDY SOILS

SILVIA B. AIMAR, MARIANO J. MENDEZ, ROGER FUNK, DANIEL E. BUSCHIAZZO

Aeolian Research

ELSEVIER

Año: 2012 vol. 3 p. 437 - 444

1875-9637

Little information is available on the effect of properties of coarse textured soils on the emission of fine particulate matter (PM10). In this study was evaluated the effect of textural fractions (clay, silt and sand), organic mater contents (OM) and soil moisture of 7 sandy to loamy-sand soils on potential PM10 emissions by means of wind tunnel simulations. PM10 emissions decreases linearly along the whole soil moisture range in loess developed soils (Anguil and Santa Rosa), and above a given soil moisture in soils developed on sandy sediments (Villa Mercedes, Abra Pampa, Potrok Aike, Rio Mayo and Pilcaniyeu). Soils with higher PM10 emissions had high threshold moisture contents (TMC, soil moisture above which the PM10 emission was negligible) excepting for Potrok Aike (PA) that had low PM10 emissions and high TMC (8%) as a consequence of its relative high OM contents. Moisture effects on PM10 emissions decreased in a logarithmic way when OM contents increased in relation to soil silt contents (P