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filereference:dbsystem:soils [2015/03/27 18:17] – enviadmin | filereference:dbsystem:soils [2015/03/28 08:15] – enviadmin | ||
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====== Soils Database Table ====== | ====== Soils Database Table ====== | ||
- | [[apps: | + | [{{ : |
- | + | ||
- | [{{ : | + | |
===== Content ===== | ===== Content ===== | ||
The Soils Database provides a collection of basic soils and artificial materials used to construct soil profiles. | The Soils Database provides a collection of basic soils and artificial materials used to construct soil profiles. | ||
- | You do not access items from this table in your simulations directly, but you link through the soil profiles. | + | You do not access items from this table in your simulations directly, but you refer to them through the definition of soil profiles. |
===== Soil Parameters ===== | ===== Soil Parameters ===== | ||
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=== Water Content (Natural soils only) === | === Water Content (Natural soils only) === | ||
- | The water content | + | The [[wp> |
- | * **at Saturation**: | + | |
- | * **at Field Capacity**: | + | |
- | * ** at Wilting Point**:\\ wilting point is the lowest threshold | + | |
+ | * **Water content at Saturation**: | ||
+ | * **Water content at Field Capacity**: At [[wp> | ||
+ | * ** Water content at Wilting Point**: The [[wp> | ||
+ | These values are a constant property of the soil and its texture matrix and are normally available for a limited list of soils. | ||
+ | |||
+ | === Matrix Potential === | ||
+ | |||
+ | |||
+ | |||
+ | ---- | ||
+ | |||
+ | [[apps: | ||
- | * **Type of Material**: \\ defines if the soil material is a **Natural soil** or an **Artificial material**. The main difference between the two is that natural soils allow the exchange of water inside the soil layers and - if used at the surface- allow natural transpiration. The thermal properties are calculated dynamically based on the actual water content of the soil. In addition, **Water Body** is supported as a special material to include still water bodies of substantial depth. Note: If "Water Body" is chosen, all other parameters are not required as the physical properties of water are fixed in ENVI-met. |