Evaluation of the impact of the Gully Land Consolidation Project on runoff under extreme rainfall

Dados Bibliográficos

ID21648680
AutoresShaobo Long (0000-0003-4549-8722, Institute of Soil and Water Conservation, Northwest A&F University Yangling PR China), Jianen Gao (0000-0002-1211-9717, Institute of Soil and Water Conservation, Northwest A&F University Yangling PR China, autor correspondente), Hui Shao (0000-0003-0102-1439, Department of Geography, Environment and Geomatics University of Guelph Guelph Ontario Canada), Youcai Kang (0000-0003-0893-0248, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources Yangling PR China), Zhe Gao (0000-0002-7951-6848, College of Water Resources and Architectural Engineering, Northwest A&F University Yangling PR China), Zihao Guo (0000-0001-9940-3157, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources Yangling PR China), Xingchen Zhang (0000-0003-3231-2183, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources Yangling PR China), Lu Wang (0000-0002-9250-3988, Institute of Soil and Water Conservation, Northwest A&F University Yangling PR China)
Ano2022
Volume33
Fascículo15
Páginas2663-2676
Data de publicação2022-09-01
Peer ReviewedSim
Open AccessSim
TipoARTICLE
PeriódicoLand Degradation and Development (JOURNAL)
Identificadores do periódicoISSN: 1085-3278 • E-ISSN: 1099-145X
EditoraWiley (PUBLISHER • GB)
DOI10.1002/ldr.4284
OpenAlexW4226257573
IdiomaEN
Citações recebidas3
Referências citadas106

Extreme rainfall is an important driver of soil erosion and land damage. The Gully Land Consolidation program (GLCP) was first launched in 2011 as a major land reclamation practice to increase farmland in the Loess Plateau of China. Studying the impact of artificial projects on hydrology can help humans to respond to the various water issues, but the assessment of the effects of the GLCP on extreme rainfall‐induced water runoff at watershed scale is currently lacking. Our study used the soil and water assessment tool (SWAT) to evaluate the influence of the GLCP at different locations and areas on water runoff under extreme rainfall events in the Yanhe watershed. Results showed that: (1) the GLCP can improve the interception of surface runoff, with interception efficiency in downstream of the watershed approximately twice that at midstream and entire watershed as well as seven‐times that at the upstream; (2) when GLCP measures are evenly distributed in a watershed, as the area of GLCP increases from 76.40 km 2 (1% of watershed area) to 382.01 km 2 (5%), the interception of surface runoff increases by 0.77 mm; (3) and the GLCP can increase soil infiltration and groundwater recharge. This research is expected to provide insights into the optimized layout of the GLCP at watershed scale. Correspondingly, policymakers can refer to this information in developing policies on the sustainable use of land

Geography · Groundwater · Groundwater recharge · Interception · Runoff curve number · Surface runoff · Water resource management · Watershed · Environmental Science · Hydrology and Watershed Management Studies · Irrigation Practices and Water Management · Soil erosion and sediment transport · Ecology · Geology