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NSI textures
The National Soil Inventory (NSI) textures data is a spatial, point dataset
with 6,127 points, located in a 5km grid across England and Wales.
NSI textures provides a very detailed description of the texture of the
topsoil. This data, taken from laboratory analysis of the samples from
the sites, breaks the topsoil down to its constituent grainsize fraction
and provides the percentage of that soil which is of that fraction.
NSI textures can be used to identify areas of topsoil heavily influenced
by the presence of clay, silt or sand. This data set will be useful for
those investigating the pattern of soil textures across England and Wales,
for instance in the relationship between soil and underlying lithology.
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NSI textures data and description
The table below describes the various properties within this data product.
Each point contains the information outlined below.
| Property |
Example from data |
Description |
| EAST_NSI |
91000 |
National Grid reference easting at 5km resolution with 1km offset
from true grid |
| NORTH_NSI |
11000 |
National Grid reference northing at 5km resolution with 1km offset
from true grid |
| CLAY |
3.1 |
Clay including CaCO3 (%) (<2um ) |
| SILT |
10.9 |
Silt content (%), including CaCO3, (0.002 - 0.06mm) |
| VFSAND |
5.8 |
Very fine sand, including CaCO3 (0.06 - 0.1 mm, 60-100um) |
| MFSAND |
21.8 |
Moderately fine sand (%), including CaCO3, (100-200um) |
| MSAND |
49 |
Medium sand (%), including CaCO3 (200 - 600um) |
| CSAND |
9.4 |
Coarse sand, including CaCO3, (%), (600um - 2mm) |
|