Description: Das Projekt "Element cycles in mountain regions under various land use" wird vom Umweltbundesamt gefördert und von Universität Bayreuth, Fachgruppe Geowissenschaften, Bayreuther Zentrum für Ökologie und Umweltforschung (BayCEER), Lehrstuhl für Agrarökosystemforschung durchgeführt. Research question: What is the role of agricultural land use in changes of nutrient cycles and losses dependingon surface slope and climate? Approach: Annual balance of main nutrients for 3-4 main agricultural farms based on fertilizer input, partitioning of nutrients in above and below ground plant parts, output with harvest, losses with DOM and erosion (in collaboration with other TP). The balances will be done depending on agricultural practices in Eger and Haean Catchment and will be compared with adjacent grassland and forest. Obtained element cycles will be upscaled from farm area to the level of both catchments basins depending on specific land use, surface slope and climate. Research question: Can we reconstruct previous erosion and nutrient losses and separate them under forest and under agricultural use? Approach: Undisturbed sediment cores (7 for Eger and 7 for Haean) will be taken from the lakes and soils of landscapes subordinated to agricultural fields. Three radiocarbon data of wood particles at increasing depth for each sediment core will be used as references. The age of the bottom sediment layer should be less than 1000 years. The total content of C, N, P, K, Mg, Ca, Si will be analyzed in individual laminae or sediment layers. Conclusions will be drawn based on the thickness of the laminae, their elements content and the ratio between nutrients and Si. The conclusions will be proven by 13C (vegetation change) and 15N (N input by fertilizers) of individual laminae. Research question: What are the best management practices for sloping uplands? Approach: Measured element cycles and losses under various agriculture practice will be analysed and practices with the least nutrient losses and erosion will be selected. The best management practices for landscapes with different slopes will be elaborated.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Landschaftspflege ? Nährstoffgehalt ? Nährstoffhaushalt ? Vegetation ? Seen ? Waldverlust ? Main ? Düngemittel ? Nährstoff ? Ökologie ? Skigebiet ? Wiese ? Erosion ? Bodennutzung ? Ernte ? Grünland ? Landwirtschaftliche Nutzung ? Landwirtschaftlicher Betrieb ? Nährstoffbilanz ? Sedimentkern ? Altholz ? Lebensalter ? Daten ? Flächennutzung ? Einzugsgebiet ? Management ? Nährstoffeintrag ? Nährstoffkreislauf ? Umweltforschung ? Wasserspeicher ? Ackerland ? Sediment ? Berg ? Bilanz ? Schaden ? Bodenlandschaft ? Bohrkern ? Messung ? Klimaforschung ? Forschung ? Klima ? Landwirtschaft ? Partikel ? Fahrradfahren ? Wald ? Bewirtschaftungssystem ? Landschaft ? Gebiet ? Gebirge ? Hang ? Landwirtschaftliche Fläche ? TEIL ? FRAGE ? SONSTIG ? SPEZIFISCH ? NICHT GESTOERT ? BEST ? DICKE ? OBERFLAECHE ? UNTER ? AUSGEWAEHLT ? VERGLEICHEN ? Bilanz [Betriebswirtschaft] ? REFERENZ ? Vermehrung ? GEHALT ? SCHICHT ? SCHLUSSFOLGERUNG ?
Region: Bayern
Bounding box: 12.53381° .. 12.53381° x 47.795° .. 47.795°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2009-03-01 - 2013-09-01
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