abiotic and biotic soil characteristics in old growth forests and thinned or unthinned mature stands in three regions of oregon非生物和生物土壤特性在古老的森林生长和变薄或unthinned成熟站在俄勒冈州的三个地区.pdfVIP

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abiotic and biotic soil characteristics in old growth forests and thinned or unthinned mature stands in three regions of oregon非生物和生物土壤特性在古老的森林生长和变薄或unthinned成熟站在俄勒冈州的三个地区.pdf

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abiotic and biotic soil characteristics in old growth forests and thinned or unthinned mature stands in three regions of oregon非生物和生物土壤特性在古老的森林生长和变薄或unthinned成熟站在俄勒冈州的三个地区

Diversity 2012, 4, 334-362; doi:10.3390/d4030334 OPEN ACCESS diversity ISSN 1424-2818 /journal/diversity Article Abiotic and Biotic Soil Characteristics in Old Growth Forests and Thinned or Unthinned Mature Stands in Three Regions of Oregon David A. Perry 1, *, Robert P. Griffiths 1, Andrew R. Moldenke 2 and Stephanie L. Madson 1 1 Department of Forest Ecosystems and Society, Oregon State University, Corvallis, OR 97331, USA; E-Mail: bob.griffiths@ (R.P.G.) 2 Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR 97331, USA; E-Mail: moldenka@ * Author to whom correspondence should be addressed; E-Mail: perryd@; Tel.: +1-541-441-1428. Received: 1 August 2012; in revised form: 30 August 2012 / Accepted: 30 August 2012 / Published: 20 September 2012 Abstract: We compared forest floor depth, soil organic matter, soil moisture, anaerobic mineralizable nitrogen (a measure of microbial biomass), denitrification potential, and soil/litter arthropod communities among old growth, unthinned mature stands, and thinned mature stands at nine sites (each with all three stand types) distributed among three regions of Oregon. Mineral soil measurements were restricted to the top 10 cm. Data were analyzed with both multivariate and univariate analyses of variance. Multivariate analyses were conducted with and without soil mesofauna or forest floor mesofauna, as data for those taxa were not collected on some sites. In multivari