Development and Application of Annual Evapotranspiration Estimation Model Considering Vegetation Effect

Park, Yoonkyung; Cho, Seonju; Park, Moo Jong; Kim, Sangdan

doi:10.9798/kosham.2014.14.2.363

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…In other words, simple things are sometimes enough. The key motivation for this study is the observation that the relationship between yearly precipitation and yearly stream flow in the Andong dam watershed located in the southern part of the Korean peninsula in East Asia is very simple [32]. Despite the fact that the hydrological cycle of the watershed is composed of numerous interactions between climate, topography, and vegetation, the system's response to input can be explained by a relatively simple linear relationship.…”

Section: Introductionmentioning

confidence: 99%

Stochastic Parsimonious Hydrologic Partitioning Model under East Asia Monsoon Climate and Its Application to Climate Change

Lee

Choi

Sim

et al. 2019

Water

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A conceptual hydrologic partitioning model suitable for the East Asia monsoon climate region is constructed parsimoniously, and the variability of Horton index, which is the ratio of water vaporization and wetting in the watershed, is investigated. Numerical simulations in the study area show that the inter-annual variability of Horton index is reduced to around 60% of the inter-annual variability of annual precipitation, and there is a strong inverse correlation between Horton index and annual precipitation. Using cumulant expansion theory, the probability distribution function of soil water with various hydro-meteorological variables and watershed characteristics is derived. Using the steady-state soil water probability distribution function, the sensitivity of Horton index to hydro-meteorological variables such as precipitation occurrence probability, average rainfall depth at rainy days, and evapotranspiration rate and hydro-geophysical characteristics such as surface runoff coefficients, threshold soil water value to control vaporization, and exponent value to control groundwater recharge is analyzed. Looking at the future Horton index of the study area using a variety of future climate information ensemble, it is projected that the water stress of vegetation in the watershed is likely to increase due to fluctuations in precipitation patterns and increase in potential evapotranspiration even if annual precipitation increases.

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Section: Introductionmentioning

confidence: 99%

Stochastic Parsimonious Hydrologic Partitioning Model under East Asia Monsoon Climate and Its Application to Climate Change

Lee

Choi

Sim

et al. 2019

Water

Self Cite

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Impacts of Watershed and Meteorological Characteristics on Stream Water Quality Resilience

Park,

Lee

et al. 2024

Preprint

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Landuse oriented Water Balance Analysis Method by the Hydrological Model BAGLUVA based on Soil and Vegetation

Kwon¹

2015

Journal of the Korean Institute of Landscape Architecture

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Urban environmental problems such as flooding, depletion of ground water, pollution of urban streams and the heat island effect caused by urban development and climate change can be mitigated by the improvement of the urban water cycle.For the effective planning of water cycle management it is necessary to establish aerial Hydrotope Maps, with which we can estimate the status and change of the water allowance for any site. The structure of the German water balance model BAGLUVA, which is based on soil and vegetation, was analyzed and the input data and boundary condition of the model was compared with Korean data and research results. The BAGLUVA Model consists of 5 Input categories (climate, land use, topography, soil hydrology and irrigation). The structure and interconnection of these categories are analyzed and new concepts and implementation methods of topographic factor, maximum evapotranspiration ratio, effective rooting depth and Bagrov n parameter was compared and analyzed. The relation of real evapotranspiration (ET a )-maximum evapotranspiration (ET max ) -precipitation (P) was via Bagrov n factor represented. The aerial and land use oriented Hydrotope Map can help us to investigate the water balance of small catchment areas and to set goals for volume of rainwater management and LID facilities effectively in the city. Further, this map is a useful tool for implementing water resource management within landscape and urban planning.

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Development and Application of Annual Evapotranspiration Estimation Model Considering Vegetation Effect

Cited by 3 publications

References 19 publications

Stochastic Parsimonious Hydrologic Partitioning Model under East Asia Monsoon Climate and Its Application to Climate Change

Stochastic Parsimonious Hydrologic Partitioning Model under East Asia Monsoon Climate and Its Application to Climate Change

Impacts of Watershed and Meteorological Characteristics on Stream Water Quality Resilience

Landuse oriented Water Balance Analysis Method by the Hydrological Model BAGLUVA based on Soil and Vegetation

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