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Geology, soil & site
For 330 Geology, soil and site productivity
Term | Definition |
---|---|
Aspect | Compass direction that a slope faces |
Bioindicator | Species or group of species whose function, population, or status can reveal the qualitative status of the environment. |
Extrusive rock | Rock derived from magma that was poured out or ejected at Earth's surface where they cool quickly to form small crystals. |
Glacial till | Unsorted sediment that is derived from the erosion and entrainment of material by a moving glacier. |
Habitat type | A land classification system based on natural climax vegetation associations. |
Intrusive rock | Rocks from magma that crystallize below Earth's surface where slow cooling allows large crystals to form. |
Loess | A deposit formed by wind that is predominately silt-sized partles and produces fertile topsoil. |
Metasedimentary rock | Rock of sedimentary origin that has since been subjected to metamorphism. |
Multivariate analysis | Analysis of data that arises from more than one variable. |
Site | Area in which a plant or stand grows, considered in terms of its environment, particularly as this determines the type and quantity of the vegetation the area can carry |
Site index | A measure of actual or potential forest productivity, usually expressed in terms of the average height of dominant trees. |
Spatial data | Information about a physical object that is represented in a geographic coordinate system. |
Volcanic ash | Small bits of pulverized rock and glass less than 2 millimetres in diameter created by volcanic eruptions; fine tephra. |