The potential effects of hydrogen sulfide gas from geothermal energy conversion on two plant species native to northern New Mexico
Dry weight of top growth, water content of top growth, leaf nitrogen content, and leaf chlorophyll content were measured in well-watered, field-exposed little bluestem (Schizachyrium scoparium Nash.) and mountain brome (Bromus marginatus Nees.) plants fumigated with various mean levels of H/sub 2/S ranging from 0.05 to 3.58 ppm. Dry weght of little bluestem plants which received low concentrations of H/sub 2/S increased by 94% of the control. Dry weight of little bluestem plants which received higher concentrations of H/sub 2/S concentration dry weight of little bluestem was reduced by 44% of the control. There was no evidence that the reduction in nitrogen content at low H/sub 2/S levels was detrimental to plant growth. The productivity increase at these low concentrations may have been partially due to increases in leaf chlorophyll content (28%) and decreases in water content (16%). The linear dependence of dry weight on leaf chlorophyll content diminished as H/sub 2/S stress increased. The productivity increase may have partially reflected the usage of sulfur from H/sub 2/S as a nutrient source.
- OSTI ID:
- 5176580
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
150600 -- Geothermal Energy-- Environmental Aspects
560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOLOGICAL EFFECTS
CARBOXYLIC ACIDS
CHALCOGENIDES
CHLOROPHYLL
CONVERSION
DATA
ENERGY CONVERSION
EXPERIMENTAL DATA
FEDERAL REGION VI
FIELD TESTS
GEOTHERMAL ENERGY CONVERSION
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INFORMATION
NEW MEXICO
NORTH AMERICA
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHYTOCHROMES
PIGMENTS
PLANTS
PORPHYRINS
PRODUCTIVITY
SULFIDES
SULFUR COMPOUNDS
TESTING
USA