Applicability Assessment of Estimation Methods for Baseflow Recession Constants in Small Forest Catchments

Yang, Hee Moon; Choi, Hyung Tae; Lim, Honggeun

doi:10.3390/w10081074

Cited by 21 publications

(19 citation statements)

References 30 publications

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“…Where Q i is the discharge at time i of an observed flow recession from the master recession curve. Graphical techniques such as the matching strip method and correlation method are used for defining a master recession curve using observed hydrographs (Yang et al, 2018). In this study, by plotting all the recession limbs of the 6-year hydrograph of the allocation period on semi-logarithmic graph, the master curve was derived using the matching strip method.…”

Section: Data Availability Statementmentioning

confidence: 99%

A parameter allocation approach for flow simulation using the WetSpa‐Python model

Bahremand

Ahmadyousefi

Sheikh

et al. 2020

Hydrological Processes

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Hydrologic models are simplified representations of natural hydrologic systems. Since these models rely on assumptions and simplifications to capture some aspects of hydrological processes, calibration of parameters is unavoidable. However, utilizing the philosophy of a recent modelling framework proposed by Bahremand (2016), we show how calibration of most model parameters can be avoided by allocating or presetting these parameters utilizing knowledge gained from sensitivity analyses, field observations and a priori specifications as a part of a parameter allocation procedure. This paper details the simulation of daily river flow of the Shemshak‐Roudak watershed performed using the Python version of the WetSpa model. The WetSpa‐Python model is a distributed model of hydrological processes applied at the watershed scale. The model was applied to the Shemshak‐Roudak watershed of Iran with parameter allocation. Model calibration involved only two parameters. Straightforward methods were proposed for allocating model parameters, including three baseflow‐related parameters and the determination of maximum active groundwater storage using a mass curve technique. Also, the Budyko curve was used to constrain a correction factor for potential evapotranspiration. The WetSpa‐Python model was extended to include the influence of snowmelt. A failure to include snow in the hydrological processes of the WetSpa‐Python model creates a significant discrepancy between the observed and simulated hydrographs during the spring. The results of daily simulations for 12 years (2002–2014) are in good agreement with observations of discharge (Kling‐Gupta Efficiency = 0.84). These results demonstrate that it is feasible to simulate hydrographs with limited calibration given a knowledge of hydrological processes and an understanding of relationships between catchment characteristics and model parameters.

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Section: Data Availability Statementmentioning

confidence: 99%

A parameter allocation approach for flow simulation using the WetSpa‐Python model

Bahremand

Ahmadyousefi

Sheikh

et al. 2020

Hydrological Processes

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“…There are several methods for baseflow separation analysis. The Eckhardt filter can separate baseflow from streamflow with a simple digital filter, and it describes forest catchment characteristics well [7,27]. The Eckhardt filter equation is as follows,…”

Section: Baseflow Separationmentioning

confidence: 99%

“…And the AR (1) model, which explains the baseflow at one point from a previous one, for calculating the recession constant. The AR (1) model is appropriate for analyzing the baseflow characteristics in the small forest catchment [7].…”

Section: Baseflow Separationmentioning

confidence: 99%

“…In this study, coniferous trees were planted after the clear cutting of the deciduous catchment, which resulted in a decrease in water yield. In other words, although there is a deviation in terms of the forest characteristics such as tree density, leaf area index, forest age, etc., this generally means that the water yield of coniferous forests is less than that of deciduous forest, and related research has been steadily conducted to date [7,13,29].…”

Section: Runoff Shifts In Gcp and Gnd Forest Catchmentsmentioning

confidence: 99%

“…In the Republic of Korea, 64% of the country's land is covered by forests, and most of the upstream basins of major rivers, which are important sources for national water resources, are covered by forests. Therefore, most of Korea's water resources come from forests [7], and forest conservation and management are essential for a sustainable clean water supply in Korea. By the 1960s, large parts of forest lands in the Republic of Korea had been devastated by the Korean war, excessive illegal logging, and so on.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of Forest Thinning on the Long-Term Runoff Changes of Coniferous Forest Plantation

Yang

Choi

Lim

2019

Water

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Forests and water are closely related to each other. Thus, forest management is crucial for the sustainable clean water supply. Forest thinning is one of the fundamental forest management practices, as it can change runoff by controlling the density of trees. In this study, the effect of forest thinning on long-term runoff changes was evaluated, based on the long-term rainfall-runoff data of a coniferous plantation forest catchment in Korea. From the double mass curve and Pettitt’s test, a statistically significant increase in runoff rates was identified. A simple linear regression model of the double mass curve can successfully quantify the net effect of forest thinning on the runoff increase. Furthermore, it was also confirmed that forest thinning does not significantly increase the risk of flooding. About ten years after forest thinning, crown closure rates of the coniferous plantation forest reached a level similar to the pre-thinning period, and runoff rates returned to the pre-thinning level, due to forest growth. As a result of this study, a proposed direction for Korea’s forest policy for water resource management is presented for the future.

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Comparison of streamflow recession between plantations and native forests in small catchments in Central‐Southern Chile

Balocchi

Flores

Arumí

et al. 2021

Hydrological Processes

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In central Chile, many communities rely on water obtained from small catchments in the coastal mountains. Water security for these communities is most vulnerable during the summer dry season and, from 2010 to 2017, rainfall during the dry season was between 20% and 40% below the long‐term average. The rate of decrease in stream flow after a rainfall event is a good measure of the risk of flow decreasing below a critical threshold. This risk of low flow can be quantified using a recession coefficient (α) that is the slope of an exponential decay function relating flow to time since rainfall. A mathematical model was used to estimate the recession coefficient (α) for 142 rainstorm events (64 in summer; 78 in winter) in eight monitored catchments between 2008 and 2017. These catchments all have a similar geology and extend from 35 to 39 degrees of latitude south in the coastal range of south‐central Chile. A hierarchical cluster analysis was used to test for differences between the mean value of α for different regions and forest types in winter and summer. The value of α did not differ (p < 0.05) between catchments in winter. Some differences were observed during summer and these were attributed to morphological differences between catchments and, in the northernmost catchments, the effect of land cover (native forest and plantation). Moreover, α for catchments with native forest was similar to those with pine plantations, although there was no difference (p < 0.05) between these and Eucalyptus plantations. The recession constant is a well‐established method for understanding the effect of climate and disturbance on low flows and baseflows and can enhance local and regional analyses of hydrological processes. Understanding the recession of flow after rainfall in small headwater catchments, especially during summer, is vital for water resources management in areas where the establishment of plantations has occurred in a drying climate.

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Applicability Assessment of Estimation Methods for Baseflow Recession Constants in Small Forest Catchments

Cited by 21 publications

References 30 publications

A parameter allocation approach for flow simulation using the WetSpa‐Python model

A parameter allocation approach for flow simulation using the WetSpa‐Python model

Effects of Forest Thinning on the Long-Term Runoff Changes of Coniferous Forest Plantation

Comparison of streamflow recession between plantations and native forests in small catchments in Central‐Southern Chile

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