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Work package no 4: Water relations and hydrological balance of ecosystems, catchments
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Precipitation amount and intensity will be measured using a tipping bucket raingauge, |
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Soil water content and soil water potential will bedetermined simultaneously and will allow an in-situ description of the characteristic water content - potential curves; for quality assurance this curve will also be determined by laboratory methods on soil cores. |
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Evapotranspiration of grassland and dwarf shrub ecosystems will be monitored by lysimeters, as well as by the energy-balance-Bowen-ratio-method (see also main work packages no 5 and no 6). The total transpiration of six single trees per forest site will be recorded continuously by xylem sap flux measurements, providing the data for establishing the water balance of forest stands. |
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Run-off from defined experimental plots will be monitored by means of a seesaw system. |
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