Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. IV
Written by Gabriel MINEA, Mary-Jeanne ADLER, Gabriela MOROSANU, Gianina NECULAU
The aim of this study is to investigate the role of land use in the dynamics of the water resources on a plot scale (waterbalance plot), following natural spring rainfalls and land use (grassland vs. bare soil). The study was primarily basedon hydrometeorological data (e.g.: rainfall depths, rainfall intensities and flows), measured in the spring (IV-V) of 2014at Voinesti Experimental Basin, part of the National Institute of Hydrology and Water Management - Romania. Thewater balance plots are situated at an altitude of 500 m a.s.l. in the Curvature Subcarpathians and have the followingcharacteristics: 300 sq m area; type of soil: eutricambisol; average slope of 13% and N-S orientation; land use: a plot“grassland”(P1) and another plot “bare soil”(P2).During the analyzed period, rainfall events, corroborated with previous conditions of soil humidity, have beenquantitatively reflected in the flow parameters (depths, discharges) thus: the processed soil plot created heterogeneousconditions for the runoff surface, such as microdepressions, and thus flow rates have been reduced compared to thoserecorded on the grass plot; The interception of vegetation, in cases of previous humidity (last 3 days) caused by smalldepths (e.g. 0.6 and 19 mm), has been low and highlighted by high rates of overland flow (0.144 l/s on vs. 0.092 l/s onP1), and when antecedent conditions are marked by rainfalls, the interception has been reduced and thus the volumesof overland flows were amplified (4996 l on P2 vs. 2800 l on P1); soil infiltration rates were elevated in cases ofprevious rains and low when previous conditions were dry for both land use types; this is also confirmed by thepartition of average flows volumes: 15% overland flow, 27% subsurface flow, 58% base flow.
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{simplepopup popup="false" name="Citation15"}Gabriel MINEA, Mary-Jeanne ADLER, Gabriela MOROSANU, Gianina NECULAU 2015, THE RELATIONSHIP BETWEEN FLOW RATES AND LAND USE AT PLOT SCALE IN THE VOINESTI EXPERIMENTAL BASIN (ROMANIA). Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. IV, Print ISSN 2285-6064, 88-94. {/simplepopup}