000863386 001__ 863386
000863386 005__ 20190919112405.0
000863386 037__ $$aFZJ-2019-03459
000863386 041__ $$aEnglish
000863386 1001_ $$0P:(DE-Juel1)178995$$aGöbel, Leonie$$b0$$ufzj
000863386 1112_ $$aBONARES conference$$cBerlin$$d2018-02-26 - 2018-02-28$$wGermany
000863386 245__ $$aNutrient losses and nutrient retention efficiencies in temperate agroforestry systems versus conventional agricultural systems
000863386 260__ $$c2018
000863386 3367_ $$033$$2EndNote$$aConference Paper
000863386 3367_ $$2DataCite$$aOther
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000863386 3367_ $$2ORCID$$aLECTURE_SPEECH
000863386 3367_ $$0PUB:(DE-HGF)6$$2PUB:(DE-HGF)$$aConference Presentation$$bconf$$mconf$$s1568885026_27158
000863386 520__ $$aModern agricultural production is considered unsustainable and often is accompanied by detrimental environmental effects such as nutrient leaching losses. This results in a strong need for more environmentally friendly management systems. Alley-cropping agroforestry systems, with tree components implemented for bioenergy use, are innovative agricultural systems since they take advantage of beneficial ecological functions of both their tree and crop components. In such systems, trees can act as a safety-net against nutrient leaching as they can take up nutrients that are beyond the reach of grass/crop or at times when grass/crop demand is low. However, no comparison of nutrient losses and nutrient retention efficiencyhave yet been conducted between conventional and agroforestry systems. Our study therefore aimed to 1) quantify nutrient losses in grassland/cro pland agroforestry and conventional grassland/cropland, 2) evaluate how efficiently nutrients are being retained in both management systems (nutrient retention efficiency = (1-leaching losses/soil-available nutrient), and 3) assess whether differences in nutrient retention efficiencies between grassland/cropland agroforestry and conventional grassland/cropland are related to differences in microbial nutrient-cycling processes in the soil or differences in plant uptake of nutrients. We hypothesized that conventional systems will have higher nutrient losses and lower nutrient retention efficiencies than agroforestry systems.We investigated six paired sites of conventional grassland/cropland and grassland/cropland agroforestry with alley cropping of fast growing tree species and grass/crop, located in central Germany. Results from the growing season of 2016/2017 will be presented. Measurements in agroforestry were taken within tree strips and at various distances to the tree strips within the grass/crop strips. Soil water samples were collected monthly with lysimeters and the samples analyzed for nutrient concentrations (nitrogen, phosphorus, base cations). To calculate yearly nutrient losses, drainage flux was estimated with the model Expert-N. This study will provide the presently needed information on whether alley-cropping agroforestry systems can reduce the negative environmental impacts through leaching losses while optimizing production and therefore might be a sustainable alternative to conventional agriculture.
000863386 7001_ $$0P:(DE-HGF)0$$aSchmidt, Marcus$$b1
000863386 7001_ $$0P:(DE-HGF)0$$aHeinlein, Florian$$b2
000863386 7001_ $$0P:(DE-HGF)0$$aVeldkamp, Edzo$$b3
000863386 7001_ $$0P:(DE-HGF)0$$aCorre, Marife$$b4
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000863386 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)178995$$aForschungszentrum Jülich$$b0$$kFZJ
000863386 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$a Georg-August-Universität Göttingen$$b1
000863386 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$a Helmholtz Zentrum München$$b2
000863386 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$a Georg-August-Universität Göttingen$$b3
000863386 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$a Georg-August-Universität Göttingen$$b4
000863386 920__ $$lno
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000863386 980__ $$aI:(DE-Juel1)IBG-2-20101118
000863386 980__ $$aI:(DE-Juel1)ZB-20090406