TY - GEN A1 - Quinkenstein, Ansgar A1 - Pape, Dirk A1 - Freese, Dirk A1 - Schneider, Bernd Uwe A1 - Hüttl, Reinhard F. T1 - Biomass, Carbon and Nitrogen Distribution in Living Woody Plant Parts of Robinia pseudoacacia L. Growing on Reclamation Sites in the Mining Region of Lower Lusatia (Northeast Germany) T2 - International Journal of Forestry Research Y1 - 2012 N1 - Article ID 891798 ER - TY - GEN A1 - Schillem, Steffi A1 - Gerwin, Werner A1 - Freese, Dirk ED - Frouz, Jan ED - Gerwin, Werner ED - Marcin Pietrzykowski, Marcin T1 - Tree and shrub species grown on post-mining sites as source of biomass for bio-based industry N2 - Reclamation sites in East-Germany are characterized by very sandy substrates being almost free of organic matter, with extremely low nutrient contents and an annual precipitation of only 570 mm and lower. To enhance the value of such marginal lands for a future regionally based bioeconomy the EU funded BeonNAT project plans the plantation of regional tree and shrub species. The obtained forest biomass will be used for the production of biodegradable bio-based products and bioactive compounds that will play an important role to replace fossil-based competing substitute products. Field trials in different European countries will be established to test the benefit of intercropping/mixed-forest in marginal cultural land versus the natural growing/monoculture. In Germany, one test site is located in the post-mining sites of Lusatia. In this field trial the biomass development, the impact on soil fertility and biodiversity will be investigated after planting Robinia pseudoacacia and Rubus fructicosus. KW - reclamation KW - bio-based products KW - marginal land Y1 - 2021 UR - https://www.researchgate.net/publication/352312151_Tree_and_shrub_species_grown_on_post-mining_sites_as_source_of_biomass_for_bio-based_industry ER - TY - CHAP A1 - Tsonkova, Penka A1 - Quinkenstein, Ansgar A1 - Böhm, Christian A1 - Freese, Dirk T1 - Assessment of Carbon Sequestration in German Alley Cropping Systems T2 - EGU General Assembly 2012, held 22-27 April, 2012 in Vienna N2 - Alley cropping systems (ACS) are agroforestry practices in which perennial trees or shrubs are grown in wide rows and arable crops are cultivated in the alleys between the tree rows. Recently, ACS which integrate stripes of short rotation coppices into conventional agricultural sites have gained interest in Germany. These systems can be used for simultaneous production of crops and woody biomass which enables farmers to diversify the provision of market goods. Adding trees into the agricultural landscape creates additional benefits for the farmer and society also known as ecosystem services. An ecosystem service provided by land use systems is carbon sequestration. The literature indicates that ACS are able to store more carbon compared to agriculture and their implementation may lead to greater benefits for the environment and society. Moreover, carbon sequestration in ACS could be included in carbon trading schemes and farmers rewarded additionally for the provision of this ecosystem service. However, methods are required which are easy to use and provide reliable information regarding change in carbon sequestration with change of the land use practice. In this context, our aim was to develop a methodology to assess carbon sequestration benefit provided by ACS in Germany. Therefore, the change of carbon in both soil and biomass had to be considered. To predict the change in soil carbon our methodology combined the 2006 IPCC Guidelines for National Greenhouse Gas Inventories and the soil organic carbon balance recommended by the Association of German Agricultural Investigation and Research Centers (VDLUFA). To reflect the change in biomass carbon average annual yields were adopted. The results showed that ACS established on agricultural sites can increase the carbon stored because in the new soil-plant system carbon content is higher compared to agriculture. ACS have been recommended as suitable land use systems for marginal sites, such as post-mining areas. In such areas soil carbon usually increases at a faster initial rate compared to agricultural land which means that these areas could provide high level of carbon sequestration service in the short term. The approach will be broadened to include assessment of other ecosystem services provided by ACS in Germany which would increase the possibility to adequately compensate farmers for the supply of environmental benefits. Y1 - 2012 UR - http://meetingorganizer.copernicus.org/EGU2012/EGU2012-12477.pdf N1 - EGU2012-12477 CY - European Geophysical Society ER - TY - GEN A1 - Veldkamp, Edzo A1 - Schmidt, Marcus A1 - Markwitz, Christian A1 - Beule, Lukas A1 - Beuschel, René A1 - Biertümpfel, Andrea A1 - Bischel, Xenia A1 - Duan, Xiaohong A1 - Gerjets, Rowena A1 - Göbel, Leonie A1 - Graß, Rüdiger A1 - Guerra, Victor A1 - Heinlein, Florian A1 - Komainda, Martin A1 - Langhof, Maren A1 - Luo, Jie A1 - Potthoff, Martin A1 - Ramshorst, Justus G. V. van A1 - Rudolf, Carolin A1 - Seserman, Diana-Maria A1 - Shao, Guodong A1 - Siebicke, Lukas A1 - Svoboda, Nikolai A1 - Swieter, Anita A1 - Carminati, Andrea A1 - Freese, Dirk A1 - Graf, Torsten A1 - Greef, Jörg M. A1 - Isselstein, Johannes A1 - Jansen, Martin A1 - Karlovsky, Petr A1 - Knohl, Alexander A1 - Lamersdorf, Norbert A1 - Priesack, Eckart A1 - Wachendorf, Christine A1 - Wachendorf, Michael A1 - Corre, Marife D. T1 - Multifunctionality of temperate alley-cropping agroforestry outperforms open cropland and grassland T2 - Communications Earth & Environment N2 - AbstractIntensively managed open croplands are highly productive but often have deleterious environmental impacts. Temperate agroforestry potentially improves ecosystem functions, although comprehensive analysis is lacking. Here, we measured primary data on 47 indicators of seven ecosystem functions in croplands and 16 indicators of four ecosystem functions in grasslands to assess how alley-cropping agroforestry performs compared to open cropland and grassland. Carbon sequestration, habitat for soil biological activity, and wind erosion resistance improved for cropland agroforestry (P ≤ 0.03) whereas only carbon sequestration improved for grassland agroforestry (P < 0.01). In cropland agroforestry, soil nutrient cycling, soil greenhouse gas abatement, and water regulation did not improve, due to customary high fertilization rates. Alley-cropping agroforestry increased multifunctionality, compared to open croplands. To ameliorate the environmental benefits of agroforestry, more efficient use of nutrients is required. Financial incentives should focus on conversion of open croplands to alley-cropping agroforestry and incorporate fertilizer management. Y1 - 2023 U6 - https://doi.org/10.1038/s43247-023-00680-1 SN - 2662-4435 VL - 4 IS - 1 PB - Springer Science and Business Media LLC ER - TY - GEN A1 - Seserman, Diana-Maria A1 - Pohle, Ina A1 - Veste, Maik A1 - Freese, Dirk T1 - Growth vulnerability of hybrid-poplar and black locust to prospective climatic changes T2 - 4th World Congress on Agroforestry: Strengthening links between science, society and policy. 20-22 May 2019, Montpellier, France N2 - In Brandenburg, eastern Germany, prospective climate changes imply extreme weather events, increasing annual temperature, and decreasing summer precipitation. Since alley-cropping systems (ACS) have a broad planning horizon, appraising their sustainability and efficiency under changing climate conditions is crucial for forthcoming risk assessments and adaptation scenarios. Consequently, this combined experimental and simulation study investigated the growth vulnerability of poplar clone “Max I” (Populus nigra L. x P. maximowiczii Henry) and black locust (Robinia pseudoacacia L.) short rotation coppices in an ACS established in Brandenburg to a considerable spectrum of weather conditions and long term climate change, from 2015 to the end of 2054. The investigation employed (i) Yield-SAFE, a biophysical, process-based model to simulate the above-ground tree woody biomass and (ii) 100 realisations of the statistical regional climate model STAR 2K. In the most optimistic sequence of events pertaining to air temperature, precipitation, and global radiation, 35% more woody biomass would be achieved by poplar and 43% by black locust in the last period compared to the base period. Alternatively, in the most pessimistic circumstances, 54% less woody biomass would be rendered by poplar and 47% by black locust. Our findings corroborated the tree growth vulnerability to prospective climatic changes, particularly to changes in water availability. KW - Climatic impacts, Poplar, Black locust, Biomass, Yield-SAFE Y1 - 2019 UR - https://www.alphavisa.com/agroforestry/2019/documents/Agroforestry2019-Book-of-Abstract-v1.pdf UR - https://agroforestry2019.cirad.fr/replay/book-of-abstracts SP - 65 EP - 65 ER - TY - GEN A1 - Dilly, Oliver A1 - Franke, G. A1 - Nii-Annang, Seth A1 - Weber, K. A1 - Freese, Dirk A1 - Zyakun, Anatoly A1 - Hüttl, Reinhard F. T1 - Soil respiratory indicators including carbon isotope characteristics in response to copper T2 - Geomicrobiology Journal Y1 - 2008 U6 - https://doi.org/10.1080/01490450802402992 SN - 1521-0529 VL - 25 IS - 7-8 SP - 390 EP - 395 ER - TY - CHAP A1 - Gerwin, Werner A1 - Repmann, Frank A1 - Freese, Dirk A1 - Baumgarten, Wibke A1 - Ivanina, Vadym ED - Novák, Martin ED - Krám, Pavel ED - Stepánová, Markéta T1 - Marginal lands - ecological limitations and economic potentials T2 - 9th International Symposium on Ecosystem Behavior BIOGEOMON, Litomysl, Czech Republic, August 20-24, 2017 N2 - The term “marginal land” refers to generally unfavourable site conditions for traditional economic agriculture or forestry. The definitions of marginality differ widely and also the scientific perspective on this type of land is very heterogeneous. However, with regard to the fast growing competition for arable lands between agricultural food production and the increasing need for growing renewable resources, such marginal lands could offer a mitigation option. Whereas agriculture is concentrating rapidly on the most fertile soils, the production of biomass as the renewable basis for various products could be shifted to sites with lower soil fertility. This in general is the main objective of the H2020 funded EU project SEEMLA (acronym for “Sustainable exploitation of biomass for bioenergy from marginal lands”). This project aims at an establishment of suitable innovative land-use strategies for a sustainable production of plant-based energy on marginal lands, while improving general ecosystem services. This approach will be tested in selected casestudy regions in Europe on marginal lands with different reasons for their marginality. One of the central tasks of this project was the characterization and classification of the investigated marginal sites according to a common definition. For that reason the Muencheberg Soil Quality Rating (SQR) system1 was adapted and applied at sites in Germany, Greece and Ukraine. This paper gives an overview of the importance and properties of different soil parameters and ecological site conditions for this classification. Even if the occurrence of the single site limitations epends on regional conditions, some generalizations are possible. Based on the respective dominating soil related restrictions, a classification of types of marginality and of marginal lands can be derived also with regard to their land use potentials for renewable resources. Further, cultivating biomass on marginal lands may offer remediation potentials with regard to the described ecological restraints of marginal sites. Y1 - 2017 UR - http://www.biogeomon.cz/documents/Abstracts.pdf SP - S. 362 PB - Czech Geological Survey CY - Prague ER - TY - CHAP A1 - Böhm, Christian A1 - Quinkenstein, Ansgar A1 - Freese, Dirk A1 - Hüttl, Reinhard F. T1 - Energieholzproduktion in Agroforstsystemen als ein Beitrag zur Verbesserung des Bodenschutzes T2 - Bodenschutz in Europa, Ziele und Umsetzung, 6. Marktredwitzer Bodenschutztage, 06. - 08. Oktober 2010 Marktredwitz, Bayern Y1 - 2010 SP - 78 EP - 84 CY - Marktredwitz ER - TY - GEN A1 - Böhm, Christian A1 - Freese, Dirk A1 - Hüttl, Reinhard F. T1 - Energieholzproduktion in Agroforstsystemen - das Projekt AgroForstEnergie T2 - CEBra Newsletter Y1 - 2010 IS - 6 SP - 1 EP - 2 ER - TY - GEN A1 - Dimitrova, Tsvetelina A1 - Repmann, Frank A1 - Freese, Dirk T1 - Degradation of ferrocyanide by natural isolated bacteria T2 - International Journal of Phytoremediation N2 - This study aims at investigating the iron cyanide (CN) degradation potential of two natural bacterial isolates with the purpose of their application in iron CN phytoremediation. The strains were isolated from contaminated soil and incubated over 4 months with 50mg L⁻¹CN (as ferrocyanide) as the sole iron and nitrogen source. Unlike previous reports, the study provides control for bacterial growth, biotic and abiotic CN losses. Bacterial growth, CN, ammonium, and nitrate concentrations were monitored regularly. Both strains grew less rapid with iron CN compared with the positive control. However, the growth was diauxic. The CN concentration in the media decreased with 20% and 25% respectively, while that in the sterile controls remained stable. Ammonium was detected in the media of both strains implying that a fraction of the initially applied ferrocyanide has been converted. The nitrogen lost from the system evened out with that in the cells at the end of the experiments. These results showed that the investigated strains were undoubtedly able to grow on iron CN as an alternative nitrogen source, but contrary to some previous findings, the iron CN utilization is much slower and takes place only after complete exhaustion of the cellular nitrogen reserves. Y1 - 2019 U6 - https://doi.org/10.1080/15226514.2019.1633996 SN - 1549-7879 SN - 1522-6514 VL - 22 IS - 1 SP - 20 EP - 28 ER - TY - CHAP A1 - Böhm, Christian A1 - Bärwolff, Manuela A1 - Quinkenstein, Ansgar A1 - Freese, Dirk ED - Nelles, Michael T1 - Bereitstellung von holzartigen Bioenergieträgern durch Agroforstsysteme T2 - Tagungsband, 5. Rostocker Bioenergieforum, am 2. und 3. November 2011 an der Universität Rostock, Y1 - 2011 SN - 978-3-940364-20-3 SP - 57 EP - 68 PB - Univ. CY - Rostock ER - TY - GEN A1 - Gypser, Stella A1 - Schütze, Elisabeth A1 - Freese, Dirk T1 - Crystallization of single and binary iron- and aluminum hydroxides affect phosporus desorption T2 - Journal of Plant Nutrition and Soil Science N2 - In acidic soils, phosphorus availability is affected by its strong affinity for mineral surfaces, especially Fe- and Al-hydroxides. Plant roots have developed adaptive strategies to enhance the availability of phosphorus, including producing and exuding low molecular weight organic acids with a high affinity for phosphorus that competes with high molecular weight organic ligands formed during humification and mineralization. The aim of this study was to characterize the kinetics and mechanism of phosphorus desorption from Fe- and Al-hydroxides of variable crystallinity, as well as binary Fe:Al-hydroxide mixtures. Long-term desorption experiments (56 days) were conducted with CaCl₂, CaSO₄, citric acid, and humic acid as competitive sorptives. CaCl₂ and CaSO₄ were selected as general inorganic sorptives and citric and humic acids were selected as organic ligands produced by organisms in the rhizosphere or following humification. The cumulative phosphorus desorption increased following the order CaCl₂< CaSO₄< humic acid < citric acid. Amorphous ferrihydrite and Fe-rich Fe:Al-hydroxides exhibited much less desorption when exposed to inorganic solutions than the crystalline and Al-rich Fe:Al-hydroxide mixtures. Models of the desorption data suggest phosphorus desorption with citric acid is diffusion- controlled for ferrihydrite and Fe-rich amorphous Fe:Al-hydroxides. When humic acid was the sorptive, metal-organic complexes accumulated in the solution. The results suggest organic compounds, especially citric acid, are more important for liberating phosphorus from Fe- and Al-minerals than inorganic ions present in the soil solution. Y1 - 2019 U6 - https://doi.org/10.1002/jpln.201700543 SN - 1522-2624 VL - 182 IS - 5 SP - 741 EP - 750 ER - TY - CHAP A1 - Tsonkova, Penka A1 - Freese, Dirk A1 - Böhm, Christian A1 - Quinkenstein, Ansgar A1 - Schaller, Eberhard ED - Freese, Dirk ED - Pittruff, N. ED - Quinkenstein, Ansgar ED - Böhm, Christian T1 - Benefits provided by silvoarable agroforestry systems in the temperate region: a review T2 - Proceedings of the International Workshop on Agroforestry - Ecological Benefits of Agroforestry, 15-17 June 2011, Cottbus, Germany Y1 - 2011 UR - http://www-docs.tu-cottbus.de/multiland/public/FreeseEtAl2011_Proceedings_of_the_International_Workshop_on_Agroforestry.pdf SP - S. 29 ER - TY - GEN A1 - Freese, Dirk A1 - Böhm, Christian A1 - Kwasnicka, Kamila A1 - Quinkenstein, Ansgar A1 - Uckert, Götz T1 - Kostensparend und ökologisch. Ökonomie und rechtlicher Rahmen für Agroforstsysteme T2 - Neue Landwirtschaft Y1 - 2011 SN - 0863-2847 IS - 1 SP - 91 EP - 94 ER - TY - CHAP A1 - Schaaf, Wolfgang A1 - Gerwin, Werner A1 - Freese, Dirk A1 - Böhm, Christian A1 - Krümmelbein, Julia T1 - Initiale Ökosystementwicklung, Rekultivierung und alternative Landnutzung in der Niederlausitzer Bergbaufolgelandschaft T2 - Böden verstehen, Böden nutzen, Böden fit machen, Jahrestagung der Deutschen Bodenkundlichen Gesellschaft, 3. - 9. September 2011 Y1 - 2011 SP - 22 EP - 27 PB - Dt. Bodenkundliche Gesellschaft CY - Oldenburg ER - TY - CHAP A1 - Gypser, Stella A1 - Freese, Dirk ED - Krämer, Inga ED - Häberle, Stephanie T1 - Mechanisms of adsorption and desorption of phosphorus on crystalline iron, aluminum, manganese (hydr)oxides as well as iron and calcium phosphates in comparison to amorphous iron-aluminum compounds T2 - 8th International Phosphorus Workshop IPW8, Rostock, Germany, September 12-16, 2016 N2 - Inorganic phosphorus (P) plays an important role as plant nutrient in fertilizers, but also as a major pollutant to aquatic ecosystems by leaching from arable land. The mobility and bioavailability of P depends on adsorption, desorption and precipitation processes at soil mineral surfaces. In the soil matrix, P can be found in the forms of iron, aluminum or calcium complexes, adsorbed on mineral surfaces. P reactions in soil, especially the fixation on iron and aluminum (hydr) oxides, have been thoroughly studied. But the much slower process of P release has to be attended as well regarding the prospective supply of fertilizers and the use of plant available P pools in arable soils. The P adsorption ability of pedogenic oxides depends on their crystallinity, while soils contain both crystalline minerals such as goethite or ferrihydrite, as well as amorphous iron and aluminum compounds. In this study, long-term adsorption and desorption experiments were carried out to investigate the P binding mechanism during the sorption processes at certain time steps. For adsorption experiments, various experimental conditions such as pH, P ionic strength, competitive ions such as SO4 2- and Ca2+ as well as time will be considered. For desorption experiments, a Flow-Through-Reactor-Technique will be applied to investigate desorption kinetics and processes under nearly natural conditions without disturbance of the mineral-solution interface. Additionally, the release of P from the iron and calcium phosphates vivianite and hydroxyapatite, a main supplier of inorganic P and model substance for bone char, will be investigated. By using Fourier-Transformation-Infrared-Spectroscopy, changes of P binding mechanisms during ad- and desorption processes and easily as well heavily purgeable P can be detected. Aim is to identify fundamental processes of P fixation and mobilization as well as to specify similarities and differences of P binding on crystalline and amorphous reactive surfaces of pedogenic oxides. Y1 - 2016 U6 - https://doi.org/10.12754/procs-2016-ipw8 SP - S. 73 CY - Rostock ER - TY - GEN A1 - Quinkenstein, Ansgar A1 - Böhm, Christian A1 - Freese, Dirk A1 - Wöllecke, Jens A1 - Grünewald, Holger A1 - Schneider, Bernd Uwe A1 - Hüttl, Reinhard F. T1 - Alley-Cropping - Ein klima-adaptierbares Landnutzungssystem zur nachhaltigen Biomasseproduktion T2 - Forum der Forschung Y1 - 2008 SN - 0947-6989 VL - 12 IS - 21 SP - 131 EP - 138 ER - TY - GEN A1 - Gypser, Stella A1 - Freese, Dirk T1 - Phosphorus release from vivianite and hydroxyapatite by organic and inorganic compounds T2 - Pedosphere N2 - Based on recent mining rates and the exhaustion of global phosphorus (P) reserves, there is a need to mobilize P already stored in soils, and its recovery from secondary resources such as Ca- and Fe-phosphates is important. The Ca-phosphate hydroxyapatite forms a good fertilizer source, while vivianite is formed in waterlogged soils and sediments. During sludge treatment, the formation of vivianite has been identified, being mainly Fe-phosphate. Long-term P release from both hydroxyapatite and vivianite was studied using different inorganic (CaCl2 and CaSO4) and organic (citric and humic acid) reagents during batch experiments. Reagents CaCl2 and CaSO4 represent the soil solution, while citric and humic acids as organic constituents affect P availability in the rhizosphere and during the process of humification. Additionally, the flow-through reactor (FTR) technique with an infinite sink was used to study the long-term P release kinetics. The cumulative P release was higher by organic acids than by inorganic compounds. The cumulative P release rates were higher in the FTR with CaCl2 as compared to the batch technique. The infinite sink application caused a continuously high concentration gradient between the solid and liquid phases, leading to higher desorption rates as compared to the batch technique. The predominant amount of the total P released over time was available for a short term. While inorganic anion exchange occurred at easily available binding sites, organic acids affected the more heavily available binding sites, which could be embedded within the mineral structure. The results showed that organic compounds, especially citric acid, play a superior role as compared to the inorganic constituents of the soil solution during the recovery of already stored P from the tertiary phosphates vivianite and hydroxyapatite. Y1 - 2020 U6 - https://doi.org/10.1016/S1002-0160(20)60004-2 SN - 1002-0160 VL - 30 IS - 2 SP - 190 EP - 200 ER - TY - CHAP A1 - Repmann, Frank A1 - Gerwin, Werner A1 - Freese, Dirk ED - Böhm, Christian T1 - Nachhaltige Biomasserzeugung zur energetischen Verwertung auf marginalen Standorten in Europa - Bewertung der Standortqualität T2 - Bäume in der Land(wirt)schaft - von der Theorie in die Praxis, Tagungsband mit Beiträgen des 5. Forums Agroforstsysteme 30.11. bis 01.12.2016 in Senftenberg (OT Brieske) N2 - Der Lehrstuhl Bodenschutz und Rekultivierung der Brandenburgischen Technischen Universität Cottbus-Senftenberg (BTU CS) ist Projektpartner in dem von der Europäischen Union im Rahmen des Programms Horizon 2020 geförderten Forschungsprojekts SEEMLA → „Sustainable exploitation of biomass for bioenergy from marginal lands in Europe“ → „Nachhaltige Nutzung von Biomasse für Bioenergie von marginalen Standorten in Europa“. Übergeordnetes Ziel des Projektes ist die Ermittlung des Biomassepotenzials, das auf marginalen Standorten innerhalb von Europa nachhaltig produziert und energetisch verwertet werden kann. Die BTU CS hat in diesem Kontext Untersuchungen zur Bewertung der Marginalität von potenziellen Biomasse-Produktionsstandorten in Deutschland, Griechenland und der Ukraine durchgeführt. Zu diesem Zweck wurde das Müncheberger Soil-Quality-Rating System (SQR) (Müller et al. 2007) eingesetzt. Y1 - 2017 UR - http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-41487 SN - 978-3-940471-27-7 SP - 189 EP - 195 PB - BTU CY - Cottbus ER - TY - GEN A1 - Gypser, Stella A1 - Hirsch, Florian A1 - Schleicher, Anja M. A1 - Freese, Dirk T1 - Impact of crystalline and amorphous iron- and aluminum hydroxides on mechanisms of phosphate adsorption and desorption T2 - Journal of Environmental Sciences Y1 - 2018 U6 - https://doi.org/10.1016/j.jes.2017.12.001 VL - 70 SP - 175 EP - 189 ER -