Title of article :
Multidisciplinary study of ozone, acidic deposition and climate effects on a mixed conifer forest in California, USA
Author/Authors :
P. Miller، نويسنده , , Bytnerowicz A.، نويسنده , , Fenn M.، نويسنده , , Poth M.، نويسنده , , Temple P.، نويسنده , , Schilling S.، نويسنده , , Jones D.، نويسنده , , Johnson D.، نويسنده , , I-Chow J. Hsu، نويسنده , , C. A. WATSON & J. A. BADDELEY، نويسنده ,
Abstract :
Effects of ozone, dry and wet acidic deposition and climate were studied on tree species and nutrient cycling in a southern California mixed conifer forest from 1991 to 1994 at a location within the plume of photochemical oxidant pollutants transported from the Los Angeles region to the San Bernardino mountains. Ozone injury to ponderosa (Pinus ponderosa) and Jeffrey (P. jeffreyi) pines increased during the study. The current rate of dry and wet deposition of nitrogen during the summer season (5–9 kg N ha−1) has not caused detectable changes in nutrient cycling, although summer throughfall N inputs supply pulses of available N that may be biologically significant in the short term.
