- 行业: Earth science
- Number of terms: 26251
- Number of blossaries: 0
- Company Profile:
An international scientific society that fosters the transfer of knowledge and practices to sustain global soils. Based in Madison, WI, and founded in 1936, SSSA is the professional home for 6,000+ members dedicated to advancing the field of soil science. It provides information about soils in ...
A test made on a well by pumping it down for a period of time and observing the change in hydraulic head to determine the hydraulic properties of the surrounding media. Also called a draw down test or aquifer test.
Industry:Earth science
Interaction between two species in which one species derives benefit while the other is unaffected.
Industry:Earth science
Reduction of nitrogen oxides (usually nitrate and nitrite) to molecular nitrogen or nitrogen oxides with a lower oxidation state of nitrogen by bacterial activity (denitrification) or by chemical reactions involving nitrite (chemodenitrification). Nitrogen oxides are used by bacteria as terminal electron acceptors in place of oxygen in anaerobic or microaerophilic respiratory metabolism.
Industry:Earth science
H<sub>2</sub>NCONHCONH<sub>2</sub> A product formed at high temperature during the manufacturing of urea. It is toxic to plants.
Industry:Earth science
Oxisols that have continuous plinthite near the surface, or that are saturated with water sometime during the year if not artificially drained. Aquox have either a histic epipedon, or mottles or colors indicative of poor drainage within the oxic horizon or both.
Industry:Earth science
Lipo-oligosaccharides produced by rhizobia that induce root hair deformation and curling, and division of cortical cells of roots of the host legume plant.
Industry:Earth science
Poorly drained, clayey soils, commonly formed in an estuarine environment, that become very acidic when drained due to oxidation of ferrous sulfide.
Industry:Earth science
Diagram of interconnections of nutrient flow in soil ecosystems through food chains.
Industry:Earth science
Conversion of inorganic phosphate into the energy-rich phosphate of adenosine 5'-triphosphate.
Industry:Earth science
An assemblage of overlapping aerial or space photographs or images whose edges have been matched to form a continuous pictorial representation of a portion of the earth's surface.
Industry:Earth science
