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Title: Increased site fertility and litter decomposition rate in high-pollution sites in the San Bernardino Mountains

Abstract

Some possible factors causing enhanced litter decomposition in high-pollution sites in the San Bernardino Mountains of southern California were investigated. Nitrogen concentration of soil, as well as foliage and litter of ponderosa pine (Pinus ponderosa Laws.) and Jeffrey pine (Pinus jeffreyi Grev, and Balf.) were greater in high-pollution plots than in moderate- or low-pollution plots. Nitrogen concentration of soil, foliage, and litter of ponderosa pine (ozone-sensitive), and of the ozone-tolerant species, sugar pine (Pinus lambertiana Dougl.) and incense cedar (Calocedrus decurrens (Torr.) Florin.), were all higher at a higher pollution site than at a moderate-pollution site. The rate of litter decomposition for all three species was also greater at the high-pollution site. Results suggest than the primary factor causing enhanced decomposition of L-layer litter in high-pollution plots is greater site fertility, leading to the production of foliage and litter that is higher in N than litter from moderate- or low-pollution plots.

Authors:
 [1]
  1. USDA Forest Service, Riverside, CA (United States)
Publication Date:
OSTI Identifier:
5885672
Resource Type:
Journal Article
Journal Name:
Forest Science; (United States)
Additional Journal Information:
Journal Volume: 37:4; Journal ID: ISSN 0015-749X
Country of Publication:
United States
Language:
English
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; 54 ENVIRONMENTAL SCIENCES; FOREST LITTER; DECOMPOSITION; POLLUTANTS; ENVIRONMENTAL IMPACTS; AIR POLLUTION; CALIFORNIA; CEDARS; CHEMICAL COMPOSITION; FERTILITY; LEAVES; MOUNTAINS; NITROGEN; OZONE; PINES; SOILS; BIOLOGICAL MATERIALS; CHEMICAL REACTIONS; CONIFERS; DEVELOPED COUNTRIES; ELEMENTS; MATERIALS; NONMETALS; NORTH AMERICA; PINOPHYTA; PLANTS; POLLUTION; TREES; USA; 560300* - Chemicals Metabolism & Toxicology; 540120 - Environment, Atmospheric- Chemicals Monitoring & Transport- (1990-)

Citation Formats

Fenn, M. Increased site fertility and litter decomposition rate in high-pollution sites in the San Bernardino Mountains. United States: N. p., 1991. Web.
Fenn, M. Increased site fertility and litter decomposition rate in high-pollution sites in the San Bernardino Mountains. United States.
Fenn, M. Sun . "Increased site fertility and litter decomposition rate in high-pollution sites in the San Bernardino Mountains". United States.
@article{osti_5885672,
title = {Increased site fertility and litter decomposition rate in high-pollution sites in the San Bernardino Mountains},
author = {Fenn, M},
abstractNote = {Some possible factors causing enhanced litter decomposition in high-pollution sites in the San Bernardino Mountains of southern California were investigated. Nitrogen concentration of soil, as well as foliage and litter of ponderosa pine (Pinus ponderosa Laws.) and Jeffrey pine (Pinus jeffreyi Grev, and Balf.) were greater in high-pollution plots than in moderate- or low-pollution plots. Nitrogen concentration of soil, foliage, and litter of ponderosa pine (ozone-sensitive), and of the ozone-tolerant species, sugar pine (Pinus lambertiana Dougl.) and incense cedar (Calocedrus decurrens (Torr.) Florin.), were all higher at a higher pollution site than at a moderate-pollution site. The rate of litter decomposition for all three species was also greater at the high-pollution site. Results suggest than the primary factor causing enhanced decomposition of L-layer litter in high-pollution plots is greater site fertility, leading to the production of foliage and litter that is higher in N than litter from moderate- or low-pollution plots.},
doi = {},
journal = {Forest Science; (United States)},
issn = {0015-749X},
number = ,
volume = 37:4,
place = {United States},
year = {1991},
month = {9}
}