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capri:concept:dndcmeta [2011/04/11 09:48] – gocht | capri:concept:dndcmeta [2023/06/02 09:46] (current) – [More information] gocht | ||
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+ | ===== Selected environmental indicators at 1x1 km grid resolution- DNDC link and Statistical Meta Model from DNDC ===== | ||
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+ | Main Contributors for DNDC link: Adrian Leip\\ Main Contributor for statistical meta model: Wolfgang Britz, Adrian Leip | ||
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+ | [[http:// | ||
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+ | For represenative combination of crops and soils for each NUTS II regions, DNDC runs were performed, systematically changing mineral and organic application rates, and allowing for irrigation or not. Each run covered 100 years to allow for a stabilization of the carbon and nitrogen content of the soil. The observations from those about 100.000 simulation runs were used to estimate statistical regression models per crop for selected output variables of DNDC: | ||
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+ | * Water and nitrogen leached | ||
+ | * Gaseous emission of nitrogen: NO, N2, NH3 | ||
+ | * Water transpirated and water evaporated | ||
+ | * Crop yields | ||
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+ | using soil and climatic parameters, as well as potential yields and fertilizer application rates as explanatory variables. In more then 70% of the cases, the R2 was above 85% with all variables at a significance level above 0.1%. Given that perfect calibration of the DNDC crop yields at the [[capri: | ||
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+ | ---- | ||
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+ | ==== More information ==== | ||
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+ | Wolfgang Britz and Adrian Leip:\\ //{{ : | ||
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+ | Leip, A., Marchi, G., Koeble, R., Kempen, Britz W. and Li, C.:\\ // | ||
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+ | \\ Last Updated: | ||