soil maps are used to do what
well i think to show the layers of soil
Check this article.
http://en.wikipedia.org/wiki/Soil_map
Soil maps are used to determine and understand the characteristics of soils within a particular area. They provide valuable information about the composition, properties, and spatial distribution of soils, which is helpful in various applications such as agriculture, land management, environmental planning, and engineering.
To create soil maps, geospatial data are collected through a process called soil survey. Here's a general overview of how soil maps are created:
1. Soil Sampling: Soil samples are collected from various locations within the study area. These samples are obtained at different depths, typically up to a meter, to assess the soil profile and its properties.
2. Laboratory Analysis: The collected soil samples are sent to a laboratory for analysis. Various tests are conducted to determine characteristics such as texture, pH level, organic matter content, nutrient levels, and permeability. These tests provide important information about the soil's fertility, drainage capabilities, and other properties.
3. Geospatial Analysis: The laboratory data, along with other available geographic data, are compiled and analyzed using GIS (Geographic Information System) software. The data are mapped based on specific soil properties, creating thematic layers.
4. Interpretation and Classification: Soil scientists interpret the data and classify the soils into different types or units based on their properties. These classifications help in understanding the variations, distribution patterns, and boundaries of different soil types across the study area.
5. Visualization: The classified soil data are then visualized on maps to represent the soil types and their spatial distribution. Different colors or patterns may be used to differentiate various soil units.
Once the soil maps are created, they serve as valuable tools for land planners, farmers, and environmental scientists. They help in making informed decisions regarding land use, crop selection, soil management practices, and environmental conservation measures based on the unique characteristics of each soil unit.
By referring to soil maps, professionals can effectively plan and manage land resources, assess soil suitability for different purposes, and reduce the risk of soil erosion, nutrient depletion, or contamination.