New answers tagged soil
3
After Saint Helens, forest managers thought to harvest timber in the area and replant it because they assumed nothing would ever grow again. Instead they left it alone and the eruption epicenter is now the largest outdoor ecological restoration experiment. Scientists monitor it's rate and aspects of it's regeneration. Contrary to being a dead sterile ...
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Falling ash is usually not a concern for agriculture. But the particulate matter (smoke) can harm agricultural products. Not through the soil, but by exposing the plants to smoke over long periods. In particular, many vineyard owners are very unhappy with the recent increase in wildfire smoke in the west. It taints their grapes and makes the wine less ...
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Downwash can be part of some erosion environments where minerals are moved down from their host rock environment to another location.
Black Snake Range - Granite Slopes, Victoria, Australia
The crest of the divide rises to almost 400 metres and at this site there are numerous exposed granite slopes and large boulders near the ridge crest. The lower slopes ...
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From the readme.doc file, it looks that 1, 2 and 3 following AF and the other soil symbols in the excel files you mention are about this:
Texture classes reflect the relative proportions of clay (fraction
less than 0.002mm), silt (0.002 - 0.05mm) and sand (0.05 - 2mm) in the
soil. Three textural classes are recognized: coarse (1): sands, loamy
sands and ...
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