A comprehensive analysis of interseasonal and interannual energy and water balance dynamics in semiarid shrubland and forest ecosystems

Valayamkunnath, Prasanth; Sridhar, Venkataramana; Zhao, Wei; Allen, Richard G.

doi:10.1016/j.scitotenv.2018.09.130

Cited by 15 publications

(8 citation statements)

References 130 publications

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“…For long‐term water balance in large natural catchments, evapotranspiration can be regarded as the partitioning of precipitation which is serving as water availability in Budyko formulations (

ET = P - R

) while water storage is assumed to be negligible (Donohue et al, 2010; Hobbins et al, 2001; Rodell, 2004; Xue et al, 2013). Recently, the estimation of water balance at finer time scales has attracted more attentions in many studies and these studies showed that the water storage change (including soil moisture and groundwater) played a significant role in annual water balance and made a great contribution to meet the deficit of water supply for crop water demand (Chen et al, 2018; Flerchinger & Cooley, 2000; Ghamarnia et al, 2013; Leblanc et al, 2009; Valayamkunnath et al, 2019). The application of equivalent precipitation incorporating water storage change is able to work better at improving the performance of Budyko predictions in annual scale (Chen et al, 2013; Istanbulluoglu et al, 2012; Naumburg et al, 2005; Wang, 2012; Wang & Zhou, 2016), especially for basins in arid and semi‐arid regions (Du et al, 2016; Milly & Dunne, 2002; Xing et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Application of Budyko framework to irrigation districts in China under various climatic conditions

Chen

Huo

Zhang

et al. 2022

Hydrological Processes

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Budyko's framework has been widely used to study basin‐scale water balance. In this study, we focus on the extended application of Fu's equation (one formulation of the Budyko‐type curves) to 371 large irrigation districts in China over a period of 2010–2017. Water balance method was used to estimate actual evapotranspiration )(ET in the irrigated areas. Considering the contribution of shallow groundwater to ET, the water availability in the Budyko framework defined as equivalent precipitation )(Pnormale for irrigation areas is the sum of irrigation water )(I, precipitation )(P and groundwater evaporation )(ETgw. Results showed that the relationships between evapotranspiration )(ET, water availability )(Pnormale and energy supply )(ET0 can be accurately described by the Budyko's curves. The optimal values of Budyko parameter ω for each irrigation district was obtained with multi‐annual data using least square method. The Fu's equation performed better in humid and semi‐humid regions than arid and semi‐arid regions. The comparison between ∂ET/∂Pe and ∂ET/∂ET0 confirmed the relative effect of water availability and energy supply on ET according to the variation of climatic conditions. Normalized difference vegetation index (NDVI) and soil properties (denoted by the proportion of clay and sand) were selected to develop empirical equation for parameter ω using multiple linear regression analysis method. This study shows that the Budyko framework can be extended to irrigation areas and provides useful information on evapotranspiration to assist in water management in irrigation areas.

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ET = P - R

Section: Discussionmentioning

confidence: 99%

Application of Budyko framework to irrigation districts in China under various climatic conditions

Chen

Huo

Zhang

et al. 2022

Hydrological Processes

View full text Add to dashboard Cite

show abstract

“…For long-term water balance in large natural catchments, evapotranspiration can be regarded as the partitioning of precipitation which is serving as water availability in Budyko formulations ( = − ) while water storage is assumed to be negligible (Donohue et al, 2010;Hobbins et al, 2001;Rodell, 2004;Xue et al, 2013). Recently, the estimation of water balance at finer time scales has attracted more attentions in many studies and these studies showed that the water storage change (including soil moisture and groundwater) played a significant role in annual water balance and made a great contribution to meet the deficit of water supply for crop water demand (Chen et al, 2018;Flerchinger and Cooley, 2000;Ghamarnia et al, 2013;Leblanc et al, 2009;Namuburg et al, 2005;Valayamkunnath et al, 2019). The application of equivalent precipitation incorporating water storage change is able to work better at improving the performance of Budyko predictions in annual scale Istanbulluoglu et al, 2012;Wang, 2012;Wang and Zhou, 2016), especially for basins in arid and semi-arid regions (Du et al, 2016;Milly and Dunne, 2002;Xing et al, 2018).…”

Section: Uncertainty About the Annual Water Balance And Influence Factors On ωmentioning

confidence: 99%

The application of Budyko framework to irrigation districts in China under various climatic conditions

Chen

Huo

Zhang

et al. 2021

Preprint

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Abstract. Budyko's framework has been widely used to study basin-scale water balance. In this study, we focus on the extended application of Fu's equation (one formulation of the Budyko-type curves) to 371 large irrigation districts in China over a period of 2010–2017. Water balance method was used to estimate actual evapotranspiration (ET) in the irrigated areas. Considering the contribution of shallow groundwater to ET, the water availability in the Budyko framework defined as equivalent precipitation (Pe) for irrigation areas is the sum of irrigation water (I), precipitation (P) and groundwater evaporation (ETgw). Results showed that the relationships between evapotranspiration (ET), water availability (Pe) and energy supply (ET0) can be accurately described by the Budyko's curves. The Fu's equation performed better in humid and semi-humid regions than arid and semi-arid regions. The comparison between δET/δPe and δET/δET0 confirmed the relative effect of water availability and energy supply on ET according to the variation of climatic conditions. The optimal values of Budyko parameter ω for each irrigation district was obtained with multi-annual data using least square method. Normalized Difference Vegetation Index (NDVI) and soil property (denoted by the proportion of clay and sand) were selected to develop empirical equation for parameter ω using multiple linear regression analysis method. This study showed that the Budyko framework can be extended to irrigation areas and provide useful information on evapotranspiration to assist in water management in irrigation areas.

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“…Changes in albedo, canopy conditions, soil and litter characteristics as well as different water use strategies by natural forests compared with tea plantations have profound effects on local water balance and energy budget (Lai et al, 2018; Zhou et al, 2020). Water balance of forest ecosystem was comprehensively influenced by the hydrological characteristics of different functional layers (e.g., canopy, litter and soil layers) (Aguilos et al, 2021; Souza‐Alonso et al, 2022; Valayamkunnath et al, 2019a). However, previous studies on water balance response to land‐use conversion of natural forests and managed tea plantations have mainly focused on soil layer (Lai et al, 2018; Liao et al, 2016; Zhu et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…balance of forest ecosystem was comprehensively influenced by the hydrological characteristics of different functional layers (e.g., canopy, litter and soil layers) (Aguilos et al, 2021;Souza-Alonso et al, 2022;Valayamkunnath et al, 2019a). However, previous studies on water balance response to land-use conversion of natural forests and managed tea plantations have mainly focused on soil layer (Lai et al, 2018;Liao et al, 2016;Zhu et al, 2014).…”

mentioning

confidence: 99%

The effects of land‐use conversion on evapotranspiration and water balance of subtropical forest and managed tea plantation in Taihu Lake Basin, China

Geng

Pang

et al. 2022

Hydrological Processes

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Widespread clearing of natural forests for tea plantations have profoundly altered the local water balance and energy budget. However, studies of comprehensive effects of land‐use conversion on energy and hydrological cycling are still rare. In this study, we used 5 years (2014–2018) of eddy covariance (EC) data, modelled estimates, and hydrological monitoring of different functional layers (canopy, litter and soil layers) to summarize the seasonal and inter‐annual variations and differences of evapotranspiration and water balance components in tea plantations (Camellia sinensis) and natural bamboo forests (Phyllostachysedulis). Results suggested the bamboo forest had higher actual evapotranspiration (ETa) (835 ± 5 mm) than the tea plantation (730 ± 19 mm), owing to differences in canopy conditions and plant physiology. Evident differences in ETa components were found between the tea plantation site and the bamboo forest site. The proportion of transpiration (Etr) was higher at the bamboo site (0.71–0.76) than the tea plantation site (0.60–0.65). Additionally, the soil evaporation ratio (0.10–0.13) was lower at the bamboo forest site than the tea plantation site (0.21–0.24) due to vegetation structure differences altering the radiation energy partitioning between the two sites. Moreover, the tea plantations were more susceptible to drought stress with low water storage in soil and simple rhizome‐root system. The comprehensive water holding capacity of canopy, litter, and soil layers of bamboo forest was 1.0–1.8 times of that in tea plantation. Compared with bamboo forest, pruning and losing of soil with intensive management activities enhanced drainage at the tea plantation site. This study provides insights into land‐use conversion of subtropical forest and managed tea plantation that have important implications on regional energy and water budgets.

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A comprehensive analysis of interseasonal and interannual energy and water balance dynamics in semiarid shrubland and forest ecosystems

Cited by 15 publications

References 130 publications

Application of Budyko framework to irrigation districts in China under various climatic conditions

Application of Budyko framework to irrigation districts in China under various climatic conditions

The application of Budyko framework to irrigation districts in China under various climatic conditions

The effects of land‐use conversion on evapotranspiration and water balance of subtropical forest and managed tea plantation in Taihu Lake Basin, China

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