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An approach of coupling topographic indices to dynamic ecosystem modelling

Tang, Jing LU orcid and Pilesjö, Petter LU (2013) International Association of Hydrological Sciences Symposium on Climate and Land Surface Changes in Hydrology / IAHS-IAPSO-IASPEI Joint Assemply 359. p.320-326
Abstract
The dynamic ecosystem model LPJ-GUESS combines sophisticated plant physiological and biogeochemical processes and has been successfully used in predicting vegetation dynamics at different scales. However, the water cycling is limited to vertical water movement between the atmosphere plant-soil. Thus we have developed an enhanced version of LPJ-GUESS (called LPJ-DH) by coupling water routing and lateral water fluxes. The fundamentals are based on the spatial variability of topographic indices, calculated from digital elevation models (DEM). The runoff outputs from LPJ-DH and LPJ-GUESS were compared and the newly introduced hydrology scheme showed a possible advantage in representing the drainage network and topographic effects on water... (More)
The dynamic ecosystem model LPJ-GUESS combines sophisticated plant physiological and biogeochemical processes and has been successfully used in predicting vegetation dynamics at different scales. However, the water cycling is limited to vertical water movement between the atmosphere plant-soil. Thus we have developed an enhanced version of LPJ-GUESS (called LPJ-DH) by coupling water routing and lateral water fluxes. The fundamentals are based on the spatial variability of topographic indices, calculated from digital elevation models (DEM). The runoff outputs from LPJ-DH and LPJ-GUESS were compared and the newly introduced hydrology scheme showed a possible advantage in representing the drainage network and topographic effects on water redistribution. The general increase of plant transpiration was also found over the catchment by LPJ-DH, and we demonstrated that the plant transpiration modelled by LPJ-DH was in line with observed data. Overall, the study demonstrated the feasibility and advantages of incorporating topographic effects on water redistribution within the frame of LPJ-GUESS. (Less)
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author
and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
surface runoff, LPJ-GUESS, LPJ-DH, topographic index
host publication
Climate and Land Surface Changes in Hydrology
volume
359
pages
320 - 326
publisher
International Association of Hydrological Sciences
conference name
International Association of Hydrological Sciences Symposium on Climate and Land Surface Changes in Hydrology / IAHS-IAPSO-IASPEI Joint Assemply
conference location
Gothenburg, Sweden
conference dates
2013-07-22 - 2013-07-26
external identifiers
  • wos:000323627400049
  • scopus:84901298568
ISSN
0144-7815
language
English
LU publication?
yes
id
3b1b3d21-bd64-402d-aae3-a4a7e9dbe202 (old id 4062588)
date added to LUP
2016-04-01 13:45:49
date last changed
2023-09-03 04:42:34
@inproceedings{3b1b3d21-bd64-402d-aae3-a4a7e9dbe202,
  abstract     = {{The dynamic ecosystem model LPJ-GUESS combines sophisticated plant physiological and biogeochemical processes and has been successfully used in predicting vegetation dynamics at different scales. However, the water cycling is limited to vertical water movement between the atmosphere plant-soil. Thus we have developed an enhanced version of LPJ-GUESS (called LPJ-DH) by coupling water routing and lateral water fluxes. The fundamentals are based on the spatial variability of topographic indices, calculated from digital elevation models (DEM). The runoff outputs from LPJ-DH and LPJ-GUESS were compared and the newly introduced hydrology scheme showed a possible advantage in representing the drainage network and topographic effects on water redistribution. The general increase of plant transpiration was also found over the catchment by LPJ-DH, and we demonstrated that the plant transpiration modelled by LPJ-DH was in line with observed data. Overall, the study demonstrated the feasibility and advantages of incorporating topographic effects on water redistribution within the frame of LPJ-GUESS.}},
  author       = {{Tang, Jing and Pilesjö, Petter}},
  booktitle    = {{Climate and Land Surface Changes in Hydrology}},
  issn         = {{0144-7815}},
  keywords     = {{surface runoff; LPJ-GUESS; LPJ-DH; topographic index}},
  language     = {{eng}},
  pages        = {{320--326}},
  publisher    = {{International Association of Hydrological Sciences}},
  title        = {{An approach of coupling topographic indices to dynamic ecosystem modelling}},
  volume       = {{359}},
  year         = {{2013}},
}