How to make sure underground water supply to plants in CLM?

[Lian Gong]

Dear all:
I am using CTSM5.1-dev130 to run a single-point simulation in a desert environment. In the desert, plants rely heavily on underground water, but even after setting the soil depth to 10 meters, the soil is too dry, and all the plants die. How can I ensure that plants can access underground water in such conditions? Are there any available solutions for this?

Any suggestions would be greatly appreciated.
and these are the model versions:
gonglian@weiliang-ProLiant-DL388-Gen10:~/CTSM-ctsm5.1.dev130$ ./manage_externals/checkout_externals --status --verbose
Processing externals description file : Externals.cfg (/home/gonglian/CTSM-ctsm5.1.dev130)
Processing externals description file : Externals_CDEPS.cfg (/home/gonglian/CTSM-ctsm5.1.dev130/components/cdeps)
Processing externals description file : .gitmodules (/home/gonglian/CTSM-ctsm5.1.dev130/cime)
Processing externals description file : Externals_CISM.cfg (/home/gonglian/CTSM-ctsm5.1.dev130/components/cism)
Processing externals description file : Externals_CLM.cfg (/home/gonglian/CTSM-ctsm5.1.dev130)
Checking local status of required & optional components: cdeps, genf90, fox, share, mosart, cpl7, cime, parallelio, mizuroute, doc-builder, rtm, mct, cmeps, ccs_config, cism, source_cism, clm, fates,
M ./ccs_config
modified sandbox, on ccs_config_cesm0.0.64
M ./cime
modified sandbox, on cime6.0.108
./components/cdeps
clean sandbox, on cdeps1.0.13
./components/cdeps/fox
clean sandbox, on 4.1.2.1
./components/cdeps/share/genf90
clean sandbox, on genf90_200608
./components/cism
clean sandbox, on cismwrap_2_1_95
./components/cism/source_cism
clean sandbox, on cism_main_2.01.011
./components/cmeps
clean sandbox, on cmeps0.14.21
./components/cpl7
clean sandbox, on cpl77.0.5
./components/mizuRoute
clean sandbox, on 34723c2e4df7caa16812770f8d53ebc83fa22360
./components/mosart
clean sandbox, on mosart1_0_48
./components/rtm
clean sandbox, on rtm1_0_78
e-o ./doc/doc-builder
-, not checked out --> v1.0.8
./libraries/mct
clean sandbox, on MCT_2.11.0
./libraries/parallelio
clean sandbox, on pio2_5_10
./share
clean sandbox, on share1.0.17
./src/fates
clean sandbox, on sci.1.66.1_api.25.5.0

 

[slevis]

You say that "the soil is too dry" so you may wish to experiment with the soil texture at the site of your simulation. If other soil textures still fail to retain the correct amount of moisture, you may also want to tweak the model's soil parameters and/or hydrology algorithm. These are some initial ideas, and you may come up with follow-up ideas to try if these do not seem to help.