Download or read book Sulfur Impacts on Forest Health in West central Alberta written by Douglas G. Maynard and published by . This book was released on 1994 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The processing of sour natural gas results in the emission of sulfur dioxide (SO2) and elemental sulfur (S0). An assessment was carried out in 1991 to compare soil and foliar chemical properties originally measured in 1981 and 1985 in forests near two sour gas processing plants in west-central Alberta. This study was expanded to evaluate forest health and tree growth in relation to sulfur (S) deposition in mature and immature lodgepole pine (Pinus contorta Dougl. var. latifolia Engelm.) and mature trembling aspen (Populus tremuloides Michx.). Ten (50 2 m) plots were established in 30 mature lodgepole pine sites, in 6 young lodgepole pine sites, and in 3 trembling aspen-dominated sites. The mature pine sites were classified into 3 deposition classes: high, medium, and low. The distribution of measurable S0 deposition increased from 2 km to 46 km from the S0 load-out areas; however, S0 concentration in the LFH near the gas plants has decreased since 1981. The medium deposition class sites had S concentrations in the LFH and foliage 620% higher than the low deposition class sites. Calcium (Ca) and magnesium (Mg) concentrations and pH were about 10% less in the medium deposition class sites than in the low deposition class sites. It was, however, not possible to determine a cause and effect relationship between higher S in these sites and lower pH, Ca and Mg. A greater proportion of recently dead trees was found in high deposition class sites, but no difference was seen between the other two deposition classes. There was no increase in insect- and disease-caused damage with increased S deposition in the pine stands. Trembling aspen appeared to be affected by S0 deposition with increased proportions of dead and declining trees and increased incidences of Armillaria root rot and Hypoxylon canker in S0-dusted areas. There were no differences among deposition classes on radial increments at dbh. Annual volume increments were depressed in high S0 deposition sites; however, specific volume increment was depressed in both the medium and high deposition classes indicating a possible physiological impact historically. Elevated S concentrations in the LFH and foliage and a depression in the annual volume increments were the only indicators of S impacts in lodgepole pine forests near the two sour gas processing plants. There was no apparent widespread forest decline outside of areas dusted with S0.

Download or read book USDA Forest Service General Technical Report PSW written by and published by . This book was released on 1980 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book General Technical Report PSW written by and published by . This book was released on 1978 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of Symposium on Effects of Air Pollutants on Mediterranean and Temperate Forest Ecosystems June 22 27 1980 Riverside California written by and published by . This book was released on 1980 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biomonitoring Forests Near Two Sour Gas Processing Plants written by Douglas George Maynard and published by . This book was released on 1990 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Acidic Deposition State of Science and Technology written by and published by . This book was released on 1991 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Information Report written by and published by . This book was released on 1985 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book SSSA Special Publication written by and published by . This book was released on 1998 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Symposium Workshop Proceedings written by Alberta. Alberta Environment and published by . This book was released on 1982 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers presented at Symposium/Workshop on Acid Forming Emissions in Alberta and their Ecological Effects held in Edmonton, March 9-12, 1982. Purpose to discuss acid deposition in Alberta and provide basis for future research. Five sections: air, terrestrial, aquatic, health, and workshops.

Download or read book Acid Precipitation written by and published by . This book was released on 1988 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1982 with total page 1098 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Boyce Thompson Institute Collected Research Papers written by and published by . This book was released on 1923 with total page 1224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Digest Des Rapports D information written by and published by . This book was released on 1984 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Geological Survey Circular written by and published by . This book was released on 1984 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Symposium workshop Proceedings written by and published by . This book was released on 1982 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Canadian Journal of Forest Research written by and published by . This book was released on 1996 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Canadian Forestry Service Air Pollution Program and Bibliography written by Paul Andrew Addison and published by . This book was released on 1988 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: