Influence of Subsoiling on the Effective Precipitation of Farmland Based on a Distributed Hydrological Model
Effective precipitation plays an important role in crop growth, and subsoiling may have an impact on the effective precipitation of farmland. The question how subsoiling influences effective precipitations has prompted this research. The major objective of this study was to quantify the effect of su...
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doaj-d4a021100e0e493990fca041647141c62020-11-25T03:59:49ZengMDPI AGWater2073-44412020-07-01121912191210.3390/w12071912Influence of Subsoiling on the Effective Precipitation of Farmland Based on a Distributed Hydrological ModelJianwei Wang0Kun Wang1Tianling Qin2Zhenyu Lv3Xiangnan Li4Hanjiang Nie5Fang Liu6Shan He7State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaCollege of Environmental Science and Engineering, Donghua University, Shanghai 201620, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaEffective precipitation plays an important role in crop growth, and subsoiling may have an impact on the effective precipitation of farmland. The question how subsoiling influences effective precipitations has prompted this research. The major objective of this study was to quantify the effect of subsoiling on effective precipitation of farmland. The main soil type in the study area is loam. Six scenarios were set with three factors, namely, the thickness of the soil ploughing layer, porosity, and soil permeability. The hydrological process from 2000 to 2015 was simulated with a distributed hydrological model. The results showed that a 10-cm increase in the soil thickness of the plough layer had little effect on the effective precipitation. When soil porosity increased by 0.1, the effective precipitation increased by approximately 19%. When the soil permeability coefficient increased by 0.5 times, the farmland and watershed surface runoff decreased by 24% and 13%, respectively, and the effective precipitation increased by 1.7%. This study proves that subsoiling has a positive effect on the local effective precipitation and confirms previous hypotheses.https://www.mdpi.com/2073-4441/12/7/1912farmlandsoil thicknesssoil porositysoil permeabilitybasin scale |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jianwei Wang Kun Wang Tianling Qin Zhenyu Lv Xiangnan Li Hanjiang Nie Fang Liu Shan He |
spellingShingle |
Jianwei Wang Kun Wang Tianling Qin Zhenyu Lv Xiangnan Li Hanjiang Nie Fang Liu Shan He Influence of Subsoiling on the Effective Precipitation of Farmland Based on a Distributed Hydrological Model Water farmland soil thickness soil porosity soil permeability basin scale |
author_facet |
Jianwei Wang Kun Wang Tianling Qin Zhenyu Lv Xiangnan Li Hanjiang Nie Fang Liu Shan He |
author_sort |
Jianwei Wang |
title |
Influence of Subsoiling on the Effective Precipitation of Farmland Based on a Distributed Hydrological Model |
title_short |
Influence of Subsoiling on the Effective Precipitation of Farmland Based on a Distributed Hydrological Model |
title_full |
Influence of Subsoiling on the Effective Precipitation of Farmland Based on a Distributed Hydrological Model |
title_fullStr |
Influence of Subsoiling on the Effective Precipitation of Farmland Based on a Distributed Hydrological Model |
title_full_unstemmed |
Influence of Subsoiling on the Effective Precipitation of Farmland Based on a Distributed Hydrological Model |
title_sort |
influence of subsoiling on the effective precipitation of farmland based on a distributed hydrological model |
publisher |
MDPI AG |
series |
Water |
issn |
2073-4441 |
publishDate |
2020-07-01 |
description |
Effective precipitation plays an important role in crop growth, and subsoiling may have an impact on the effective precipitation of farmland. The question how subsoiling influences effective precipitations has prompted this research. The major objective of this study was to quantify the effect of subsoiling on effective precipitation of farmland. The main soil type in the study area is loam. Six scenarios were set with three factors, namely, the thickness of the soil ploughing layer, porosity, and soil permeability. The hydrological process from 2000 to 2015 was simulated with a distributed hydrological model. The results showed that a 10-cm increase in the soil thickness of the plough layer had little effect on the effective precipitation. When soil porosity increased by 0.1, the effective precipitation increased by approximately 19%. When the soil permeability coefficient increased by 0.5 times, the farmland and watershed surface runoff decreased by 24% and 13%, respectively, and the effective precipitation increased by 1.7%. This study proves that subsoiling has a positive effect on the local effective precipitation and confirms previous hypotheses. |
topic |
farmland soil thickness soil porosity soil permeability basin scale |
url |
https://www.mdpi.com/2073-4441/12/7/1912 |
work_keys_str_mv |
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