Impact of landuse/land cover change on run-off in a catchment of Narmada river in India
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ORIGINAL PAPER
Impact of landuse/land cover change on run-off in a catchment of Narmada river in India Deepak Khare & Diptendu Patra & Arun Mondal & Sananda Kundu
Received: 12 July 2012 / Accepted: 8 December 2014 / Published online: 24 December 2014 # Società Italiana di Fotogrammetria e Topografia (SIFET) 2014
Abstract The landuse/land cover change has a significant influence on the hydrological response of a river basin. The run-off characteristics are naturally changing due to reduction of initial abstraction that increases run-off volume. Thus, it is necessary to quantify the changes in the run-off characteristics of a catchment that occur due to changes in landuse/land cover. These changes can be sudden or continuous. Physically based conceptual models have developed to find out surface run-off, and one of the models used in the present study is the Soil Conservation Service curve number (SCSCN) model which has a broad range of applications. The present study is on the application of the SCS-CN model to analyse the impact of various landuse/land cover change in the run-off characteristics of a catchment of Narmada basin in Madhya Pradesh, India. The study includes the preparation of a landuse/land cover map of different years from the satellite imageries, drainage network, and development of a database by using a geographic information system (GIS) and a run-off generation with the model to estimate the impact of landuse change on run-off.
Keywords Landuse/land cover change . SCS-CN model . Narmada . Run-off . GIS
D. Khare : D. Patra : A. Mondal : S. Kundu (*) Department of Water Resources Development & Management, Indian Institute of Technology, Roorkee, Roorkee 247 667, India e-mail: [email protected] D. Khare e-mail: [email protected] D. Patra e-mail: [email protected] A. Mondal e-mail: [email protected]
Introduction Quantification of the impact of landuse and land cover change in the run-off dynamics of a river basin has been an interesting area for hydrologists in recent years. Little is known till now if there is a well-defined quantitative relationship between the landuse properties and the runoff generation mechanism. Different methodologies have been implemented in an attempt to fill in the deficiency of knowledge in the subject, but no general and credible model has been established yet to predict the effect of landuse/land cover changes (Kokkonen and Jakeman 2002). In the earlier days, assessment of the impact of landuse/land cover changes on the run-off was mainly done through catchment experiments, and different results were obtained, with some even opposing the findings of the others. Langford (1976), as for example, found out that there is no significant increase in water yield as a result of burning down of a stand of eucalyptus. In contrast, after observing results from a number of catchment experiments, Hibbert (1967) concluded that increase in water yield occurs due to reduction of forest cover. Bosch and Hewlett (1982) furnished the changes in water yield due to changes in th
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