Evaluation of the impact of different land-use and land management on surface runoff using a modified curve number approach
2010
Abu-Hashim, Mohamed Said Desoky | Lilienthal, Holger | Schnug, Ewald
The severe flood events in several parts of Europe in recent years have increased and initiated a debate on the role of the land-use and land management changes as measures for preventive flood protection. In a catchment in Germany (Schunter region) the dynamics of soil water has been investigated in order to identify the impact of different land-use and land management on the soil water storage capacity. Based on the known NRSC curve number approach, a modified model (CNm) to determine the water storage capacity on regional scale has been developed and provide a suitable tool to investigate the impact of different land-use and land management on the infiltration properties. Simulations scenarios have shown that the total water storage capacity of a catchment can be increased by 1 % with organic farming compared to an increase of 0.4 % with conservation agriculture. Based on a land-use change study, it could be exposed that the infiltration capacity of a whole catchment has been reduced by 17 % from 1950 to 2009. The modified curve number approach is a useful tool to estimate the impacts of historic or planned land-use and land management changes.
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Эту запись предоставил Julius Kühn-Institut