http://www.wiki.mohid.com/api.php?action=feedcontributions&feedformat=atom&user=130.75.203.27&*
MohidWiki - User contributions [en]
2026-04-05T00:12:57Z
User contributions
MediaWiki 1.28.0
http://www.wiki.mohid.com/index.php?title=Module_Vegetation&diff=597
Module Vegetation
2008-06-17T13:11:36Z
<p>130.75.203.27: </p>
<hr />
<div>Some keywords/properties od the input file vegetation_x.dat are:<br />
<br />
<beginvegetationtype><br />
<br />
ID : 1<br />
NAME : Sample vegetation type<br />
<br />
<<begin_property>><br />
!total leaf are / projected crown area<br />
PROPERTY_NAME : leaf area index<br />
IS_CONSTANT : 1<br />
CONSTANT_VALUE : 0<br />
<<end_property>><br />
<br />
<<begin_property>><br />
!the depth of water that can be retained by leaves of a particular species per unit leaf area<br />
PROPERTY_NAME : specific leaf storage<br />
IS_CONSTANT : 1<br />
CONSTANT_VALUE : 0<br />
<<end_property>><br />
<br />
<<begin_property>><br />
!factor for lowering evapotranspiration due to the crop type based on a reference evapotranspiration <br />
PROPERTY_NAME : evtp crop coefficient<br />
IS_CONSTANT : 1<br />
CONSTANT_VALUE : 1<br />
<<end_property>><br />
<br />
<<begin_property>><br />
!self declaring...<br />
PROPERTY_NAME : root depth<br />
IS_CONSTANT : 1<br />
CONSTANT_VALUE : 0<br />
<<end_property>><br />
<br />
<<begin_property>><br />
!Parameter of the root water uptake model after FEDDES (1978): 'Simulation of field water use and crop yield'<br />
PROPERTY_NAME : feddes h1<br />
IS_CONSTANT : 1<br />
CONSTANT_VALUE : -0.1<br />
<<end_property>><br />
<br />
<<begin_property>><br />
!Parameter of the root water uptake model after FEDDES (1978): 'Simulation of field water use and crop yield'<br />
PROPERTY_NAME : feddes h2<br />
IS_CONSTANT : 1<br />
CONSTANT_VALUE : -0.25<br />
<<end_property>><br />
<br />
<<begin_property>><br />
!Parameter of the root water uptake model after FEDDES (1978): 'Simulation of field water use and crop yield'<br />
PROPERTY_NAME : feddes h3<br />
IS_CONSTANT : 1<br />
CONSTANT_VALUE : -5.0<br />
<<end_property>><br />
<br />
<<begin_property>><br />
!Parameter of the root water uptake model after FEDDES (1978): 'Simulation of field water use and crop yield'<br />
!Wilting point<br />
PROPERTY_NAME : feddes h4<br />
IS_CONSTANT : 1<br />
CONSTANT_VALUE : -80.0<br />
<<end_property>><br />
<br />
<<begin_property>><br />
!self declaring...<br />
PROPERTY_NAME : permeable fraction<br />
IS_CONSTANT : 1<br />
CONSTANT_VALUE : 1.0<br />
<<end_property>><br />
<br />
<endvegetationtype></div>
130.75.203.27
http://www.wiki.mohid.com/index.php?title=Evapotranspiration&diff=228
Evapotranspiration
2008-06-17T09:01:57Z
<p>130.75.203.27: </p>
<hr />
<div>Evaportransipiration is calculated with the 'FAO crop reference evapotranspiration', a standardized Penman-Monteith equation.<br />
<br />
All necessary information can be obtained from the FAO website:<br />
[http://www.fao.org/docrep/X0490E/x0490e00.htm#Contents]</div>
130.75.203.27
http://www.wiki.mohid.com/index.php?title=Module_PorousMedia&diff=579
Module PorousMedia
2008-06-16T07:37:36Z
<p>130.75.203.27: </p>
<hr />
<div>Some keywords of the PorousMedia input file:<br />
<br />
<beginsoiltype><br />
*Saturated water content<br />
THETA_S : 0.55<br />
<br />
*residual water content<br />
THETA_R : 0.1<br />
<br />
*N of Van Genuchten: 1.5(clay) to 4.5 (sandy)<br />
N_FIT : 1.15<br />
<br />
+Saturated hydraulic conductivity<br />
SAT_K : 1.39e-8<br />
<br />
*alpha of Van Genuchten: 0.005 (clay) - 0.035 (sandy)<br />
ALPHA : 0.02<br />
<br />
*L of Mualem - Van Genuchten (mostly 0.5)<br />
L_FIT : 0.50<br />
<endsoiltype></div>
130.75.203.27