Hi, I'm an error. x

Cellular Automaton Vegetation with Gridded Meteorology


Authors:
Owners:
Resource type: Generic
Storage: The size of this resource is 407.9 KB
Created: Mar 22, 2017 at 6:05 a.m.
Last updated: Sep 07, 2017 at 7:29 p.m.
Citation: See how to cite this resource
Sharing Status: Public
Views: 407
Downloads: 23
+1 Votes: 1 other +1 this  (You need to be logged in to rate this.)
Comments: No comments (yet)

Abstract

This tutorial demonstrates implementation of the Cellular Automaton Tree-GRass-Shrub Simulator (CATGRaSS) [Zhou et al., 2013] on a flat domain. This model is built using components from the Landlab component library. CATGRaSS is spatially explicit model of plant coexistence. It simulates local ecohydrologic dynamics (soil moisture, transpiration, biomass) and spatial evolution of tree, grass, and shrub Plant Functional Types (PFT) driven by rainfall and solar radiation.

Each cell in the model grid can hold a single PFT or remain empty. Tree and shrub plants disperse seeds to their neighbors. Grass seeds are assumed to be available at each cell. Establishment of plants in empty cells is determined probabilistically based on water stress of each PFT. Plants with lower water stress have higher probability of establishment. Plant mortality is simulated probabilistically as a result of aging and drought stress. Fires and grazing will be added to this model soon.

This model (driver) contains:
- A local vegetation dynamics model that simulates storm and inter-storm water balance and ecohydrologic fluxes (ET, runoff), and plant biomass dynamics by coupling the following components:
- PrecipitationDistribution
- Radiation
- PotentialEvapotranspiration
- SoilMoisture
- Vegetation

- A spatially explicit probabilistic cellular automaton component that simulates plant competition by tracking establishment and mortality of plants based on soil moisture stress:
- VegCA

To run this Jupyter notebook, please make sure that the following files are in the same folder:
- cellular_automaton_vegetation_flat_domain.ipynb (this notebook)
- Inputs_Vegetation_CA.txt (Input parameters for the model)
- Ecohyd_functions_flat.py (Utility functions)

[Ref: Zhou, X, E. Istanbulluoglu, and E.R. Vivoni. "Modeling the ecohydrological role of aspect-controlled radiation on tree-grass-shrub coexistence in a semiarid climate." Water Resources Research 49.5 (2013): 2872-2895]

Subject Keywords

  • No subject keywords have been added.
  • ${ k }

Duplicate. Keyword not added.

Error: ${ error }
Deleting all keywords will set the resource sharing status to private.

Content

References

This resource belongs to the following collections:
Title Owners Sharing Status My Permission
Landlab - HydroShare Notebook Demos from Team Meeting 2017 Christina Bandaragoda  Private &  Shareable None

Credits

Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
NSF Collaborative Research: SI2-SSI: Landlab: A Flexible, Open-Source Modeling Framework for Earth-Surface Dynamics 1450412

How to Cite

Nudurupati, S. S., E. Istanbulluoglu, J. M. Adams, D. E. J. Hobley, N. M. Gasparini, G. E. Tucker, E. W. H. Hutton (2017). Cellular Automaton Vegetation with Gridded Meteorology, HydroShare, http://www.hydroshare.org/resource/d0860ddac0364b7089cc8d7be6476d3d

This resource is shared under the Creative Commons Attribution CC BY.

 http://creativecommons.org/licenses/by/4.0/
CC-BY

Comments

There are currently no comments

New Comment

required