| 1
Model identification |
Soil
Erosion Network - Model |
|
|
|
1.1
Model name |
CSEP
-Water Erosion |
|
1.2
Most recent version |
1.0 |
|
1.3
Date of release |
Latest
version January 1995 |
|
|
| 2
Water erosion |
|
|
|
| 3
Contact person |
|
|
3.1
Name |
Professor
Mike Kirkby |
|
3.2
Address |
School
of Geography
University of Leeds
Leeds
LS2 9JT
UK |
|
3.3
Tel |
+44
113 233 3310 |
|
3.4
Fax |
+44
113 233 6758 |
|
3.5
Email |
mike@geog.leeds.ac.uk |
|
| 4
Model Author(s) |
Professor
Mike Kirkby, N J Cox |
|
| 5
Model components |
|
5.1
Water erosion: |
Based
on climate data only at present |
|
5.2
Wind erosion: |
No |
|
5.3
Hydrology: |
Point
hydrological model, based on modified TOPMODEL inter alia |
|
5.4
Site/topography: |
Regional
scale DEM if available, but other scales may also be used |
|
5.5
Plant growth: |
Model
for generic living and soil biomass |
|
5.6
Management: |
- |
|
5.7
Soil: |
Local
perameters for erodibility if available, with computed organic
component |
|
5.8
Chemistry: |
Organic
soil component using C budget |
|
5.9
Weather: |
Monthly
data and distributions |
|
|
| 6
Model characteristics |
|
6.1
Spatial |
|
|
|
6.1.1
Class of area: |
Regional
to Global |
|
|
6.1.2
Flow routing system: |
none
at present |
|
|
6.1.3
Minimum area: |
Hillslope |
|
|
6.1.4
Maximum area: |
Global |
|
6.2.
Temporal |
|
|
|
6.2.1
Timestep: |
Monthly,
integrating over distributions |
|
|
6.2.2
Single or multiple event? |
Integrated
over distribution |
|
|
6.2.3
Maximum simulation duration: |
Probably
108 years |
|
|
| 7
Model's representation of processes |
|
|
7.1
Water erosion processes |
|
|
|
7.1.1
Interrill: |
Lumped |
|
|
7.1.2
Rill: |
Ditto |
|
|
7.1.3
Gully: |
Ditto |
|
|
7.1.4
Streambank: |
- |
|
|
7.1.5
Deposition: |
Not
modelled at present: may be included when combined with DEM |
|
7.2
Wind erosion processes: |
- |
|
7.3
Hydrological processes: |
|
|
|
7.3.1
Evaporation/transpiration: |
Preistly-Taylor
(based on radiation) and soil moisture |
|
|
7.3.2
Runoff: |
Single
store model |
|
|
7.3.3
Infiltration |
Not
explicitly modelled |
|
|
7.3.4
Subsurface flow: |
Implicit
TOPMODEL |
|
|
7.3.5
Return flow |
Ditto |
|
|
|
|
7.4
Plant processes: |
|
|
|
7.4.1
Light interception and photsynthesis: |
Beer's
Law |
|
|
7.4.2
Dry matter and residue |
Based
on transpiration; respiration; leaf fall etc |
|
|
7.4.3
Root growth: |
Not
modelled separately from above |
|
|
7.4.4
Pests: |
- |
|
|
7.4.5
CO2 sensitivity: |
Not
modelled at present |
|
|
|
|
7.5
Soil: |
Multiple
layer system; properties changes when layer eroded away |
|
|
7.5.1
Crust development |
- |
|
|
7.5.2
Aggregate properties |
- |
|
|
|
|
7.6
Chemistry: |
Only
for Carbon |
|
|
7.6.1
Nutrients: |
|
|
|
7.6.2
Carbon |
Used
in logging organic soil accumulation and decomposition |
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|
7.6.3
Pesticides |
|
|
|
7.6.4
Other contaminants |
|
|
|
|
|
7.7
Weather: |
Distribution
function (Gamma or 2 exponentials) for integrated total effect |
|
| 8
Input Data (* = Mandatory) |
|
8.1
Weather: |
Monthly
values, with distribution data as available. Precipitation*,
potential evapotranspiration of temperature*, cloudiness or
sunshine hours* |
|
8.2
Soil: |
Erodibility |
|
8.3
Hydrology: |
Soil
storage capacity (before runoff)* |
|
8.4
Plant cover: |
Uncultivated
or crop type* |
|
8.5
Soil surface cover: |
Only
if imposed |
|
8.6
Management: |
for
crops* |
|
8.7
Topography/site characteristics: |
DEM
if available |
|
8.8
Micro-topography: |
- |
|
| 9
Output data |
Runoff,
sediment yeild, vegetation and organic soil biomass by month |
|
| 10
Programming language |
Quick-BASIC |
|
| 11
Computer requirements |
IBM
Compatible PC |
|
| 12
Documentation |
|
12.1
Scientific documentation: |
Kirkby,
M. J. and Cox, N. J. (in press, 1995). A climatic index for
soil erosion potential (CSEP) including seasonal and vegetation
factors. Catena Supplement. |
|
12.2
User's guide: |
Not
available |
|
12.3
Technical documentation: |
Not
available |
|
| 13
Availability |
On
request from author (Kirkby) |
| 14
Other Relevant Information |
Undergoing
further development |
|
