DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Effects of Irrigation on Water, Carbon, and Nitrogen Budgets in a Semiarid Watershed in the Pacific Northwest: A Modeling Study

Journal Article · · Journal of Advances in Modeling Earth Systems

In this study, we use the Community Land Model version 5 (CLM5) to investigate how irrigation modulates hydrologic and biogeochemical dynamics in the Upper Columbia-Priest Rapids (UCPR) watershed, a typical semi-arid watershed located in the north-western United States dominated by cropland. To our knowledge, this constitutes the first application of CLM5 with landscape heterogeneity fully resolved over a watershed. The model is calibrated and evaluated against flux measurements from an AmeriFlux site and the Moderate Resolution Imaging Spectroradiometer (MODIS) products. Two numerical experiments (i.e., irrigated and rainfed) are performed at hyper-resolution (~1 km) over the period of 2010-2018, accounting for realistic crop types and management practices. Our results show that irrigation fundamentally alters hydrologic and biogeochemical dynamics of the watershed. By adding 79.6 mm yr-1 water in addition to the mean annual precipitation of 204.0 mm yr-1, irrigation leads to increases in evapotranspiration and runoff, accompanied by shallower groundwater table depths. Increases in crop productivity in response to irrigation result in more carbon storage in the watershed, and drastically large seasonal fluctuations in soil organic carbon in response to changes in soil temperature and moisture. Irrigation also intensifies the rate of denitrification and mineralization during the growing season, enhancing the interactions between soil mineral nitrogen, the atmosphere, and freshwater systems. Our study demonstrates the potential of CLM5 as an effective tool for understanding hydrological and biogeochemical dynamics in highly-managed semi-arid watersheds.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); National Natural Science Foundation of China (NSFC)
Grant/Contract Number:
AC05-76RL01830; 41971030
OSTI ID:
1664627
Alternate ID(s):
OSTI ID: 1664629; OSTI ID: 1682243
Report Number(s):
PNNL-SA-149346
Journal Information:
Journal of Advances in Modeling Earth Systems, Vol. 12, Issue 9; ISSN 1942-2466
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

References (52)

Evaluation of MODIS LAI, fAPAR and the relation between fAPAR and NDVI in a semi-arid environment using in situ measurements journal June 2004
The Land Use Model Intercomparison Project (LUMIP) contribution to CMIP6: rationale and experimental design journal January 2016
Evaluation of a MODIS-Based Potential Evapotranspiration Product at the Point Scale journal June 2008
Tillage and Irrigation Effects on Soil Aggregation and Carbon Pools in the Indian Sub-Himalayas journal January 2013
Simulating the Impacts of Irrigation and Dynamic Vegetation Over the North China Plain on Regional Climate journal August 2018
Evaluation of CLM-Crop for maize growth simulation over Northeast China journal June 2018
Estimating land surface variables and sensitivity analysis for CLM and VIC simulations using remote sensing products journal August 2018
Hyperresolution global land surface modeling: Meeting a grand challenge for monitoring Earth's terrestrial water: OPINION journal May 2011
Irrigation factor journal September 2011
Hanford Site Vadose Zone Studies: An Overview journal January 2007
Nitrate leaching in a silage maize field under different irrigation and nitrogen fertilizer rates journal June 2009
Does long-term center-pivot irrigation increase soil carbon stocks in semi-arid agro-ecosystems? journal May 2008
A modeling study of irrigation effects on global surface water and groundwater resources under a changing climate: IRRIGATION EFFECTS ON WATER RESOURCES journal August 2015
Emergence of new hydrologic regimes of surface water resources in the conterminous United States under future warming journal October 2016
Multiscale analysis and validation of the MODIS LAI productI. Uncertainty assessment journal December 2002
Irrigation and enhanced soil carbon input effects on below-ground carbon cycling in semiarid temperate grasslands journal June 2007
Irrigation in California's Central Valley strengthens the southwestern U.S. water cycle: CENTRAL VALLEY IRRIGATION STRENGTHENS U. S. MONSOON journal January 2013
Lessons Learned From Modeling Irrigation From Field to Regional Scales journal August 2019
A GRACE ‐based assessment of interannual groundwater dynamics in the C ommunity L and M odel journal November 2015
Effects of Soil Temperature on Some Soil Properties and Plant Growth journal January 2018
Climate change impacts on irrigation water requirements: Effects of mitigation, 1990–2080 journal September 2007
Sensitivity of Regulated Flow Regimes to Climate Change in the Western United States journal March 2018
The Impact of Surface Heterogeneities and Land‐Atmosphere Interactions on Shallow Clouds Over ARM SGP Site journal June 2018
Regional Differences in the Influence of Irrigation on Climate journal April 2009
Significant impacts of irrigation water sources and methods on modeling irrigation effects in the ACME L and Model journal July 2017
Effects of irrigation on CO2 and CH4 fluxes from Mongolian steppe soil journal January 2007
Long term effects of fertilization on carbon and nitrogen sequestration and aggregate associated carbon and nitrogen in the Indian sub-Himalayas journal March 2009
Validation of MODIS and CYCLOPES LAI products using global field measurement data journal April 2012
Implications of water management representations for watershed hydrologic modeling in the Yakima River basin journal January 2019
Evaluating evapotranspiration and water-use efficiency of terrestrial ecosystems in the conterminous United States using MODIS and AmeriFlux data journal September 2010
Coupling a three-dimensional subsurface flow and transport model with a land surface model to simulate stream–aquifer–land interactions (CP v1.0) journal January 2017
Global modeling of irrigation water requirements: GLOBAL MODELING OF IRRIGATION WATER REQUIREMENTS journal April 2002
A comparative analysis of the Global Land Cover 2000 and MODIS land cover data sets journal January 2005
Simulating the Effects of Irrigation over the United States in a Land Surface Model Based on Satellite-Derived Agricultural Data journal February 2010
Surface-subsurface model intercomparison: A first set of benchmark results to diagnose integrated hydrology and feedbacks journal February 2014
Modeling the Atmospheric Response to Irrigation in the Great Plains. Part I: General Impacts on Precipitation and the Energy Budget journal December 2012
Models meet data: Challenges and opportunities in implementing land management in Earth system models journal December 2017
Characterization and intercomparison of global moderate resolution leaf area index (LAI) products: Analysis of climatologies and theoretical uncertainties: INTERCOMPARISON OF GLOBAL LAI PRODUCTS journal April 2013
Modeling the effects of irrigation on land surface fluxes and states over the conterminous United States: Sensitivity to input data and model parameters: EFFECTS OF IRRIGATION OVER CONUS journal September 2013
A novel approach to evaluate soil heat flux calculation: An analytical review of nine methods: Soil Heat Flux Calculation journal July 2017
A Modeling Study of Irrigation Effects on Surface Fluxes and Land–Air–Cloud Interactions in the Southern Great Plains journal June 2013
Influence of the irrigation technique and strategies on the nitrogen cycle and budget: A review journal December 2016
Effects of Irrigation on Summer Precipitation over the United States journal May 2016
Hydrologic Implications of Dynamical and Statistical Approaches to Downscaling Climate Model Outputs journal January 2004
Crop Rotation and Residue Management Effects on Soil Carbon and Microbial Dynamics journal January 1992
Groundwater‐River Water Exchange Enhances Growing Season Evapotranspiration and Carbon Uptake in a Semiarid Riparian Ecosystem journal January 2019
Effects of Added Organic Matter and Water on Soil Carbon Sequestration in an Arid Region journal July 2013
The Community Land Model Version 5: Description of New Features, Benchmarking, and Impact of Forcing Uncertainty journal December 2019
Estimated use of water in the United States in 2010 report January 2014
Validation of coarse spatial resolution LAI and FAPAR time series over cropland in southwest France journal December 2013
Evaluation of the MODIS LAI product using independent lidar-derived LAI: A case study in mixed conifer forest journal December 2011
Soil management concepts and carbon sequestration in cropland soils journal August 2001

Figures / Tables (21)