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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PeerJ Inc.
2013-04-01
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| author | Suk Young Hong Budiman Minasny Kyung Hwa Han Yihyun Kim Kyungdo Lee |
| author_facet | Suk Young Hong Budiman Minasny Kyung Hwa Han Yihyun Kim Kyungdo Lee |
| author_sort | Suk Young Hong |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-09T06:58:17Z |
| format | Article |
| id | doaj.art-8a9146681e6c48c0b406be149e0bcb54 |
| institution | Directory Open Access Journal |
| issn | 2167-8359 |
| language | English |
| last_indexed | 2024-03-09T06:58:17Z |
| publishDate | 2013-04-01 |
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| spelling | doaj.art-8a9146681e6c48c0b406be149e0bcb542023-12-03T10:01:30ZengPeerJ Inc.PeerJ2167-83592013-04-011e7110.7717/peerj.7171Predicting and mapping soil available water capacity in KoreaSuk Young Hong0Budiman Minasny1Kyung Hwa Han2Yihyun Kim3Kyungdo Lee4National Academy of Agricultural Science, Rural Development Administration (RDA), Suwon, Gyeonggi-do, Republic of KoreaDepartment of Environmental Sciences, Faculty of Agriculture and Environment, The University of Sydney, NSW, AustraliaNational Academy of Agricultural Science, Rural Development Administration (RDA), Suwon, Gyeonggi-do, Republic of KoreaNational Academy of Agricultural Science, Rural Development Administration (RDA), Suwon, Gyeonggi-do, Republic of KoreaNational Academy of Agricultural Science, Rural Development Administration (RDA), Suwon, Gyeonggi-do, Republic of KoreaThe 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.https://peerj.com/articles/71.pdfDigital soil mappingSoil water retentionHydraulic propertiesField capacityAndosols |
| spellingShingle | Suk Young Hong Budiman Minasny Kyung Hwa Han Yihyun Kim Kyungdo Lee Predicting and mapping soil available water capacity in Korea PeerJ Digital soil mapping Soil water retention Hydraulic properties Field capacity Andosols |
| 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 | Digital soil mapping Soil water retention Hydraulic properties Field capacity Andosols |
| url | https://peerj.com/articles/71.pdf |
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