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Predicting and mapping soil available water capacity in Korea

The knowledge on the spatial distribution of soil available water capacity at a regional or national extent is essential, as soil water capacity is a component of the water and energy balances in the terrestrial ecosystem. It controls the evapotranspiration rate, and has a major impact on climate. T...

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Autores principales: Hong, Suk Young, Minasny, Budiman, Han, Kyung Hwa, Kim, Yihyun, Lee, Kyungdo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3642705/
https://www.ncbi.nlm.nih.gov/pubmed/23646290
http://dx.doi.org/10.7717/peerj.71
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author Hong, Suk Young
Minasny, Budiman
Han, Kyung Hwa
Kim, Yihyun
Lee, Kyungdo
author_facet Hong, Suk Young
Minasny, Budiman
Han, Kyung Hwa
Kim, Yihyun
Lee, Kyungdo
author_sort Hong, Suk Young
collection PubMed
description The knowledge on the spatial distribution of soil available water capacity at a regional or national extent is essential, as soil water capacity is a component of the water and energy balances in the terrestrial ecosystem. It controls the evapotranspiration rate, and has a major impact on climate. This paper demonstrates a protocol for mapping soil available water capacity in South Korea at a fine scale using data available from surveys. The procedures combined digital soil mapping technology with the available soil map of 1:25,000. We used the modal profile data from the Taxonomical Classification of Korean Soils. The data consist of profile description along with physical and chemical analysis for the modal profiles of the 380 soil series. However not all soil samples have measured bulk density and water content at −10 and −1500 kPa. Thus they need to be predicted using pedotransfer functions. Furthermore, water content at −10 kPa was measured using ground samples. Thus a correction factor is derived to take into account the effect of bulk density. Results showed that Andisols has the highest mean water storage capacity, followed by Entisols and Inceptisols which have loamy texture. The lowest water retention is Entisols which are dominated by sandy materials. Profile available water capacity to a depth of 1 m was calculated and mapped for Korea. The western part of the country shows higher available water capacity than the eastern part which is mountainous and has shallower soils. The highest water storage capacity soils are the Ultisols and Alfisols (mean of 206 and 205 mm, respectively). Validation of the maps showed promising results. The map produced can be used as an indication of soil physical quality of Korean soils.
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spelling pubmed-36427052013-05-03 Predicting and mapping soil available water capacity in Korea Hong, Suk Young Minasny, Budiman Han, Kyung Hwa Kim, Yihyun Lee, Kyungdo Peerj Agricultural Science The knowledge on the spatial distribution of soil available water capacity at a regional or national extent is essential, as soil water capacity is a component of the water and energy balances in the terrestrial ecosystem. It controls the evapotranspiration rate, and has a major impact on climate. This paper demonstrates a protocol for mapping soil available water capacity in South Korea at a fine scale using data available from surveys. The procedures combined digital soil mapping technology with the available soil map of 1:25,000. We used the modal profile data from the Taxonomical Classification of Korean Soils. The data consist of profile description along with physical and chemical analysis for the modal profiles of the 380 soil series. However not all soil samples have measured bulk density and water content at −10 and −1500 kPa. Thus they need to be predicted using pedotransfer functions. Furthermore, water content at −10 kPa was measured using ground samples. Thus a correction factor is derived to take into account the effect of bulk density. Results showed that Andisols has the highest mean water storage capacity, followed by Entisols and Inceptisols which have loamy texture. The lowest water retention is Entisols which are dominated by sandy materials. Profile available water capacity to a depth of 1 m was calculated and mapped for Korea. The western part of the country shows higher available water capacity than the eastern part which is mountainous and has shallower soils. The highest water storage capacity soils are the Ultisols and Alfisols (mean of 206 and 205 mm, respectively). Validation of the maps showed promising results. The map produced can be used as an indication of soil physical quality of Korean soils. PeerJ Inc. 2013-04-23 /pmc/articles/PMC3642705/ /pubmed/23646290 http://dx.doi.org/10.7717/peerj.71 Text en © 2013 Hong et al. http://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Agricultural Science
Hong, Suk Young
Minasny, Budiman
Han, Kyung Hwa
Kim, Yihyun
Lee, Kyungdo
Predicting and mapping soil available water capacity in Korea
title Predicting and mapping soil available water capacity in Korea
title_full Predicting and mapping soil available water capacity in Korea
title_fullStr Predicting and mapping soil available water capacity in Korea
title_full_unstemmed Predicting and mapping soil available water capacity in Korea
title_short Predicting and mapping soil available water capacity in Korea
title_sort predicting and mapping soil available water capacity in korea
topic Agricultural Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3642705/
https://www.ncbi.nlm.nih.gov/pubmed/23646290
http://dx.doi.org/10.7717/peerj.71
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