Effects of anthropogenic water regulation and groundwater lateral flow on land processes

Zeng, Yujing; Xie, Zhenghui; Yu, Yongqiang; Liu, Shuang; Wang, Linying; Zou, Jing; Qin, Peihua; Jia, Binghao

doi:10.1002/2016ms000646

Cited by 72 publications

(79 citation statements)

References 88 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A scheme describing human water regulation was also included in the model. More detailed information about the improved CLM4.5 can be found in Zeng et al (2016).…”

Section: Y Zeng Et Al: Seasonal Effects Of Irrigation On Land-atmosmentioning

confidence: 99%

“…In this study, we adopted a modified version of CLM4.5, which was improved by Zeng et al (2016). This version of CLM4.5 was coupled with a groundwater lateral flow scheme, which enables the model to explicitly capture the water table pattern following terrain-driven lateral flow.…”

Section: Y Zeng Et Al: Seasonal Effects Of Irrigation On Land-atmosmentioning

confidence: 99%

“…Although some key works conducted by Leng et al (2014Leng et al ( , 2015 have extended the CLM's ability in modeling anthropogenic groundwater exploitation, the officially public version of CLM4.5 does not include such important human activity at this time. The improved CLM4.5 developed by Zeng et al (2016Zeng et al ( , 2017 incorporated an irrigation scheme that could settle the aforementioned points. The diagram of the complete module is presented in Fig.…”

Section: Brief Introduction For the Irrigation Module Of The Improvedmentioning

confidence: 99%

“…It showed impressive results that land models could be used in highresolution and basin-scale modeling. However, the prognostic carbon-nitrogen cycle and crop model in CLM4.5 were not active in Zeng et al (2016), which give its' results a high-level of uncertainty and exclude impacts of irrigation on carbon cycle. To overcome the difficulties above and take further steps, our study focused on a typical semiarid irrigated basin, the Heihe River basin situated in northwestern China, and conducted a high-resolution simulation (1 km) using the state-of-art CLM4.5 with active carbon-nitrogen cycle and crop model, and incorporating a high-quality irrigation dataset to quantify the impacts of irrigation on the LH, SH, and NEE parameters from land to atmosphere.…”

mentioning

confidence: 99%

“…However, the model grid size (2 • and 25 km) is still unsatisfactory to capture the feature of each irrigated patchwork. Zeng et al (2016) incorporated the schemes describing groundwater lateral flow and human water regulation into CLM4.5 and conducted highresolution (about 1 km) simulations to quantify the effects of human water-related activities on land processes. It showed impressive results that land models could be used in highresolution and basin-scale modeling.…”

mentioning

confidence: 99%

See 4 more Smart Citations

Seasonal effects of irrigation on land–atmosphere latent heat, sensible heat, and carbon fluxes in semiarid basin

2017

Self Cite

View full text Add to dashboard Cite

Abstract. Irrigation, which constitutes ∼ 70 % of the total amount of freshwater consumed by the human population, is significantly impacting land-atmosphere fluxes. In this study, using the improved Community Land Model version 4.5 (CLM4.5) with an active crop model, two high-resolution (∼ 1 km) simulations investigating the effects of irrigation on latent heat (LH), sensible heat (SH), and carbon fluxes (or net ecosystem exchange, NEE) from land to atmosphere in the Heihe River basin in northwestern China were conducted using a high-quality irrigation dataset compiled from 1981 to 2013. The model output and measurements from remote sensing demonstrated the capacity of the developed models to reproduce ecological and hydrological processes. The results revealed that the effects of irrigation on LH and SH are strongest during summer, with a LH increase of ∼ 100 W m −2 and a SH decrease of ∼ 60 W m −2 over intensely irrigated areas. However, the reactions are much weaker during spring and autumn when there is much less irrigation. When the irrigation rate is below 5 mm day −1 , the LH generally increases, whereas the SH decreases with growing irrigation rates. However, when the irrigation threshold is in excess of 5 mm day −1 , there is no accrued effect of irrigation on the LH and SH. Irrigation produces opposite effects to the NEE during spring and summer. During the spring, irrigation yields more discharged carbon from the land to the atmosphere, increasing the NEE value by 0.4-0.8 gC m −2 day −1 , while the summer irrigation favors crop fixing of carbon from atmospheric CO 2 , decreasing the NEE value by ∼ 0.8 gC m −2 day −1 . The repercussions of irrigation on land-atmosphere fluxes are not solely linked to the irrigation amount, and other parameters (especially the temperature) also control the effects of irrigation on LH, SH, and NEE.

show abstract

“…A scheme describing human water regulation was also included in the model. More detailed information about the improved CLM4.5 can be found in Zeng et al (2016).…”

Section: Y Zeng Et Al: Seasonal Effects Of Irrigation On Land-atmosmentioning

confidence: 99%

Section: Y Zeng Et Al: Seasonal Effects Of Irrigation On Land-atmosmentioning

confidence: 99%

Section: Brief Introduction For the Irrigation Module Of The Improvedmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Seasonal effects of irrigation on land–atmosphere latent heat, sensible heat, and carbon fluxes in semiarid basin

2017

Self Cite

View full text Add to dashboard Cite

show abstract

Significant impacts of irrigation water sources and methods on modeling irrigation effects in the ACMELand Model

Leng

Leung

Huang

2017

J Adv Model Earth Syst

View full text Add to dashboard Cite

An irrigation module considering irrigation water source and irrigation method has been incorporated into the ACME Land Model (ALM). Global numerical experiments were conducted to investigate irrigation effects and their sensitivity to irrigation water sources and irrigation methods. All simulations shared the same irrigation soil moisture target constrained by a global census data set of irrigation amounts. Irrigation has large impacts on terrestrial water balances especially in regions with extensive irrigation. Such effects depend on the irrigation water source: surface water‐fed irrigation decreases runoff and water table depth, while groundwater‐fed irrigation increases water table depth, and increases or decreases runoff depending on the pumping intensity. Irrigation effects also depend significantly on the irrigation method. Flood irrigation applies water in large volumes within short durations, resulting in much larger impacts on runoff and water table depth than drip and sprinkler irrigation. Differentiating the irrigation water source and method is important not only for representing the distinct pathways of how irrigation influences the terrestrial water balances, but also for estimating irrigation water use efficiency. Specifically, groundwater pumping has lower irrigation water use efficiency than irrigation relying on surface water withdrawal only due to enhanced recharge rates. Different irrigation methods also affect water use efficiency, with drip irrigation being the most efficient followed by sprinkler and flood irrigation. Our results highlight the importance of explicitly accounting for irrigation source and irrigation method, which are the least understood and constrained aspects in modeling irrigation water demand, water scarcity, and irrigation effects in Earth System Models.

show abstract

Do Lateral Flows Matter for the Hyperresolution Land Surface Modeling?

Yuan

Liang

2017

JGR Atmospheres

View full text Add to dashboard Cite

Hyperresolution land surface modeling provides an unprecedented opportunity to simulate locally relevant water and energy cycle, but lateral surface and/or subsurface flows that are essential at fine scale are often neglected by most one‐dimensional land surface models (LSMs). To analyze effects of lateral flows across scales, a Conjunctive Surface‐Subsurface Process model, which considers soil moisture‐surface flow interaction and quasi‐three‐dimensional subsurface flow, is implemented over a mountainous HyperHydro test bed in southwestern USA at different resolutions. Validation over more than 70 International Soil Moisture Network stations shows that there are significant improvements in soil moisture simulations from 30 km to 4 km as finer soil property and precipitation data are used, with correlation increased by 5%–16% and error decreased by 5%. Lateral surface flow has a significant influence on surface soil moisture and ground evaporation even at coarse resolution. Effect of lateral subsurface flow on soil moisture is nontrivial at 1 km or finer resolution especially over wet areas. At 100 m resolution, topography‐induced lateral subsurface flow causes drier peaks and wetter valleys, decreases latent heat by 8% at peaks, while increases it by 12% at valleys. Furthermore, influences of lateral subsurface flow on ground evaporation and vegetation transpiration are more significant during dry season due to a stronger coupling between soil moisture and evapotranspiration. Therefore, it is worthy to incorporate lateral flow processes in hyperresolution LSMs to better represent water and energy heterogeneity even with limited hyperresolution meteorological and surface data.

show abstract

Effects of anthropogenic water regulation and groundwater lateral flow on land processes

Cited by 72 publications

References 88 publications

Seasonal effects of irrigation on land–atmosphere latent heat, sensible heat, and carbon fluxes in semiarid basin

Seasonal effects of irrigation on land–atmosphere latent heat, sensible heat, and carbon fluxes in semiarid basin

Significant impacts of irrigation water sources and methods on modeling irrigation effects in the ACMELand Model

Do Lateral Flows Matter for the Hyperresolution Land Surface Modeling?

Contact Info

Product

Resources

About