@misc{BoehmBeeskHoschkeetal., author = {B{\"o}hm, Christian and Beesk, M. and Hoschke, A. and Freese, Dirk}, title = {Geringere N{\"a}hrstoffausnutzung - BTU Cottbus vergleicht Silphie und Mais}, series = {Energie aus Pflanzen}, journal = {Energie aus Pflanzen}, number = {6}, issn = {2194-6744}, pages = {S. 31}, language = {de} } @misc{Boehm, author = {B{\"o}hm, Christian}, title = {Agroforstwirtschaft: {\"A}ußerst vielversprechend! Alte Systeme, fit f{\"u}r die Zukunft}, series = {bioland}, volume = {12}, journal = {bioland}, issn = {0173-9832}, pages = {14 -- 16}, language = {de} } @misc{Boehm, author = {B{\"o}hm, Christian}, title = {Agroforstwirtschaft - B{\"a}ume bereichern landwirtschaftliche Fl{\"a}chen}, series = {Deutsche Bauern Korrespondenz - dbk}, journal = {Deutsche Bauern Korrespondenz - dbk}, number = {8}, issn = {0343-3846}, pages = {32 -- 33}, language = {de} } @misc{BrunkElmerBoehm, author = {Brunk, Ingo and Elmer, Michael and B{\"o}hm, Christian}, title = {Polistichus connexus (GEOFRROY in FOURCROY, 1785) - neu f{\"u}r Brandenburg (Coleoptera, Carabidae)}, series = {Entomologische Nachrichten und Berichte}, journal = {Entomologische Nachrichten und Berichte}, number = {54}, issn = {0232-5535}, pages = {65 -- 66}, language = {de} } @misc{BoehmQuinkensteinFreeseetal., author = {B{\"o}hm, Christian and Quinkenstein, Ansgar and Freese, Dirk and H{\"u}ttl, Reinhard F.}, title = {Kurzumtriebsplantage auf Niederlausitzer Rekultivierungsfl{\"a}chen: Wachstumsverlauf von vierj{\"a}hrigen Robinien}, series = {AFZ-Der Wald}, journal = {AFZ-Der Wald}, number = {10}, pages = {532 -- 533}, language = {de} } @misc{QuinkensteinBoehmFreese, author = {Quinkenstein, Ansgar and B{\"o}hm, Christian and Freese, Dirk}, title = {Zur{\"u}ck auf Los! (R{\"u}ckumwandlung einer Robinien-Kurzumtriebsplantage)}, series = {DLZ Agrarmagazin}, journal = {DLZ Agrarmagazin}, number = {7}, pages = {50 -- 51}, language = {de} } @misc{BoehmQuinkensteinFreese, author = {B{\"o}hm, Christian and Quinkenstein, Ansgar and Freese, Dirk}, title = {Chancen und Risiken der Agraholzproduktion f{\"u}r den Gew{\"a}sserschutz}, series = {Korrespondenz Wasserwirtschaft}, journal = {Korrespondenz Wasserwirtschaft}, number = {4}, pages = {667 -- 673}, language = {de} } @inproceedings{TsonkovaFreeseQuinkensteinetal., author = {Tsonkova, Penka and Freese, Dirk and Quinkenstein, Ansgar and B{\"o}hm, Christian}, title = {Assessment of ecosystem services provided by alley cropping systems for biomass production in Germany}, series = {1st European Agroforestry Conference 9-10 October 2012, Brussels, Book of Abstratcs}, booktitle = {1st European Agroforestry Conference 9-10 October 2012, Brussels, Book of Abstratcs}, editor = {Mosquera-Losada, Mar{\´i}a Rosa and Pantera, Anastasia and Rosati, A. and Amaral, J. and Smith, J. and Rigueiro-Rodriguez, A. and Watt{\´e}, J. and Dupraz, Christian}, isbn = {978-84-96351-79-0}, pages = {60}, abstract = {Alley cropping systems which integrate strips of short rotation coppices into conventional agricultural sites (ACS) have recently gained increasing interest in Germany. These ACS can be used for the simultaneous production of crops and woody biomass which enables farmers to diversify the provision of market goods. Integrating trees into the agricultural landscape can create additional benefits for the farmer and society also known as ecosystem services (ES). The scientific literature suggests that ACS are able to provide additional benefits as compared to conventional agriculture. Among the important ES provided by ACS are carbon sequestration, soil fertility, water quality, groundwater recharge, and biodiversity. However, assessment methods are required which are easy to use and provide reliable information regarding change in ES with change of the land use practice. In this context, our aim was to develop a methodology to assess selected ES provided by ACS in Germany. For this purpose an indicator set was selected from the literature and linked with the relevant ES previously identified. Furthermore, a model was developed to facilitate the calculation of the indicators. The results showed that ACS established at agricultural sites have higher capacity to provide ES as compared to single-crop agriculture. The capacity of ACS with 50\% trees is higher than the capacity of ACS with 30\% trees which suggests that the capacity of the system to provide ES increases with increased proportion of trees. The methodology seems to be a promising tool to facilitate the assessment of ES provided by the land management practices considered. In the long term this measurement approach can be broadened to include monetary evaluation of ES. This will enable rewarding farmers for providing environmental benefits therefore, accurately compensating them for the outputs supplied.}, language = {en} } @inproceedings{TsonkovaQuinkensteinBoehmetal., author = {Tsonkova, Penka and Quinkenstein, Ansgar and B{\"o}hm, Christian and Freese, Dirk}, title = {Selection of indicators to assess ecosystem services provided by alley cropping system}, series = {Book of abstracts of the 4th ESP Conference 2011 - Ecosystem Services: integrating Science and Practice; Workshop 1: Quantifying, mapping, and modeling of ecosystem services, held 4-7 October in Wageningen, Netherlands}, booktitle = {Book of abstracts of the 4th ESP Conference 2011 - Ecosystem Services: integrating Science and Practice; Workshop 1: Quantifying, mapping, and modeling of ecosystem services, held 4-7 October in Wageningen, Netherlands}, editor = {Burkhard, B. and Crossmann, N. and Nedkov, S.}, language = {en} } @inproceedings{BoehmQuinkensteinWoelleckeetal., author = {B{\"o}hm, Christian and Quinkenstein, Ansgar and W{\"o}llecke, Jens and H{\"u}ttl, Reinhard F.}, title = {Agroforestry Systems - Contribution of Alley Cropping to Ecosystem Services}, series = {Proceedings of the ASA, CSSA, and SSSA 2010 International Annual Meeting held in Long Beach, CA (USA) Oct. 31 to Nov. 4}, booktitle = {Proceedings of the ASA, CSSA, and SSSA 2010 International Annual Meeting held in Long Beach, CA (USA) Oct. 31 to Nov. 4}, publisher = {American Society of Agronomy [u.a.]}, address = {Madison, Wis.}, abstract = {Alley cropping system is an agroforestry practice in which arable crops are cultivated between tree hedgerows. For more than 15 ye ars we have been doing research in agroforestry which has been carried out on different experimental sites in the field covering about 250 acres of alley cropping, more areas with short rotation coppice, and other tree-based field experiments located close to C ottbus / Germany. The presence of woody species in the alley cropping production system has been shown to contribute significantly to carbon sequestration, nutrient cycling, improved water availability for crops, stimulation of higher soil faunal activities, soil erosion control, soil fertility improvement and sustained levels of crop production. Alley cropping systems have also come into focus for reclamation of post-mining areas where the initial content of soil organic matter (SOM) is generally close to zero and soil fertility is very low. The increase of SOM in reclamation areas depends on amount of biomass production and return to soil, and mechanisms of C protection. Production of Robinia pseudoacacia L. under alley cropping system has received considerable interest in these areas as an alternative to agricultural crops and an additional wood source, while acting as a potential C sink to counterbalance greenhouse gases emissions. The woody biomass accumulation of R. pseudoacacia reached 29.8 t drymass ha-1 after 6 years of establishment on reclaimed mine sites in northeastern Germany. Due to its high potential of litterfall production and N2 fixation, R. pseudoacacia contributed to improve soil physical, chemical and biological properties though increasing SOM, converting spoils into productive and sustainable soils. For this reason, in the temperate zone, agroforestry systems attract more and more public attention as they offer a promising and comprising way for adapting agricultural production to climate change and providing comprehensive ecosystem services. A comprehensive assessment of the ecosystem services in agroforestry systems in temperate regions should consider the potential to produce biomass and food, the evaluation of the carbon and nutrient budgets, the assessment of the potential impact of agroforestry on biodiversity at landscape scale and finally the exploration of the sustainability functions and socio-economic cross-cutting issues. These key parameters are relevant to policy by providing current and reliable information on the interactions between land management, ecosystem services and society.}, language = {en} } @inproceedings{TsonkovaBoehmQuinkensteinetal., author = {Tsonkova, Penka and B{\"o}hm, Christian and Quinkenstein, Ansgar and Freese, Dirk}, title = {Assessment of carbon sequestration provided by alley cropping systems for biomas production in Germany}, series = {Tagungsband zur 12. Forstwissenschaftlichen Tagung an der Technischen Universit{\"a}t M{\"u}nchen vom 19. bis 22. September 2012 Ausger}, booktitle = {Tagungsband zur 12. Forstwissenschaftlichen Tagung an der Technischen Universit{\"a}t M{\"u}nchen vom 19. bis 22. September 2012 Ausger}, editor = {Moog, Martin}, publisher = {Sauerl{\"a}nder}, address = {Bad Orb}, isbn = {978-3-7939-0910-1}, pages = {268}, language = {en} } @inproceedings{MantovaniVesteBoehmetal., author = {Mantovani, Dario and Veste, Maik and B{\"o}hm, Christian and Freese, Dirk}, title = {Black locust (Robinia pseudoacacia L.) in agroforestry systems: spatial and temporal variation of the plant water status and growth}, series = {2nd European Agroforestry Conference: Integrating Science and Policy to Promote Agroforestry in Practice, June 2014, Cottbus, Germany}, booktitle = {2nd European Agroforestry Conference: Integrating Science and Policy to Promote Agroforestry in Practice, June 2014, Cottbus, Germany}, editor = {Palma, Joao H. N.}, isbn = {978-972-97874-4-7}, pages = {263 -- 264}, abstract = {Short-rotation forestry and agroforestry systems have the potential to become an ecologically valuable and economically profitable land use alternative on marginal lands. Therefore, our project focuses on determining the water demand for biomass production of black locust in the Lusatia region (Eastern Germany). The area is characterized by relative low annual rainfall (560-600 mm/yr) and drought periods during spring and summer. Black locust (Robinia pseudoacacia L.) is planted in short rotation plantations as well as in agroforestry systems at reclaimed post-mining sites of the opencast mining area "Welzow S{\"u}d" and on a conventionally managed field near the town Forst (both study sites are located about 120 km to the south of Berlin). Due to mining activities the ground water table in "Welzow-S{\"u}d" is below 100 m, while on the field site in Forst the ground water table is about 2 m below the soil surface. Because of the water accessibility directly affecting the yield, it is crucial to identify the spatial variation of the soil water availability and its influence on black locust growth. The main question of this study is how the drought periods affect black locust's growth and recovery and about the drought mitigation effect obtainable by an accessible water table. The growth rate is being estimated monthly by measuring the maximum height and the trunk diameter at 10 and 130 cm. Furthermore, several trees are equipped with dendrometers to record their diameter increment in daily intervals. The pre-dawn water potential for selected trees is evaluated periodically to quantify plant water stress and relate it to the growth pattern. Water availability and microclimatic condition are monitored continuously. At the end of the vegetation period, information gathered from the field will be used to develop a growth model to link the soil water availability and plant water status with the growth rate of the trees.}, language = {en} } @inproceedings{QuinkensteinBoehmFreeseetal., author = {Quinkenstein, Ansgar and B{\"o}hm, Christian and Freese, Dirk and H{\"u}ttl, Reinhard F.}, title = {Short rotation coppice in post-mining landscapes - a promising land use system for biomass production in marginal regions}, series = {Agroforestry: A Profitable Land Use, Proceedings, 12th North American Agroforestry Conference, Athens, GA, June 4-9, 2011}, booktitle = {Agroforestry: A Profitable Land Use, Proceedings, 12th North American Agroforestry Conference, Athens, GA, June 4-9, 2011}, editor = {Ashton, Sarah F. and Workman, Sarah and Hubbard, William G. and Moorhead, David}, pages = {S. 68}, language = {en} } @inproceedings{BoehmFreeseSchmidtetal., author = {B{\"o}hm, Christian and Freese, Dirk and Schmidt, C. and H{\"u}ttl, Reinhard F.}, title = {Alley cropping - an option to combine crop and woody biomass production at degraded post-mining sites in Germany}, series = {Book of Abstracts, 2nd World Congress of Agroforestry, Agroforestry - The Future of Global Land Use}, booktitle = {Book of Abstracts, 2nd World Congress of Agroforestry, Agroforestry - The Future of Global Land Use}, publisher = {World Agroforestry Centre}, address = {Nairobi, Kenya}, isbn = {978-92-9059-255-6}, pages = {S. 253}, language = {en} } @misc{MajauraBoehmFreese, author = {Majaura, Marie and B{\"o}hm, Christian and Freese, Dirk}, title = {Effects of agroforestry systems on microclimate and water availability as determinants for sustainable soil productivity}, series = {4th World Congress on Agroforestry : 20-22 May 2019, Le Corum, Montpellier, France, Book of Abstracts}, journal = {4th World Congress on Agroforestry : 20-22 May 2019, Le Corum, Montpellier, France, Book of Abstracts}, pages = {669}, abstract = {Recent studies have shown that hedgerows in short rotation alley cropping systems (SRACS) can improve the microclimate in adjacent crop alleys through, e.g., a reduction of daytime temperature, wind speed and evaporation (Kanzler et al. 2018). Improved microclimatic conditions may positively affect crop yields by increasing the availability of water for the crop. However, studies that examine the interdependencies between microclimate changes caused by hedgerows in SRACS, water availability and crop yields are rare. In a poplar SRACS, we investigate with high spatial and temporal resolution if changes in microclimate affect water availability for two crops and crop yields. For this purpose, we use stationary weather stations installed in a transect and mobile sensors in four strips running parallel to the stationary transect at different distances from tree strips (Fig. 1) and in a monoculture. At all measuring points air temperature, air humidity and Pich{\´e} evaporation will be continuously determined. In addition, wind speed, global radiation and precipitation will be measured at the stationary weather stations. Furthermore, transpiration of crops will be determined at different times close to all microclimate points. Subsequent crop yield sampling will then enable us to determine the degree to which tree strips in ACS influence microclimate and water availability for crops at different distances from tree strips and how these relate to small-scale changes in crop yield.}, language = {en} } @inproceedings{KanzlerBoehmMircketal., author = {Kanzler, Michael and B{\"o}hm, Christian and Mirck, Jaconette and Schmitt, Dieter and Veste, Maik}, title = {Einfluss agroforstlicher Nutzung auf das Mikroklima, den Ackerfruchtertrag und die potentielle Evaporation}, series = {B{\"a}ume in der Land(wirt)schaft - von der Theorie in die Praxis, Tagungsband mit Beitr{\"a}gen des 5. Forums Agroforstsysteme 30.11. bis 01.12.2016 in Senftenberg (OT Brieske)}, booktitle = {B{\"a}ume in der Land(wirt)schaft - von der Theorie in die Praxis, Tagungsband mit Beitr{\"a}gen des 5. Forums Agroforstsysteme 30.11. bis 01.12.2016 in Senftenberg (OT Brieske)}, editor = {B{\"o}hm, Christian}, publisher = {BTU}, address = {Cottbus}, isbn = {978-3-940471-27-7}, pages = {127 -- 131}, abstract = {Der folgende Beitrag widmet sich der Frage, inwieweit sich mikroklimatische {\"A}nderungen in einem Agroforstsystem (AFS) bedingt durch die Geh{\"o}lzkomponente kleinr{\"a}umig auf die gemessene Evaporation sowie auf die Produktivit{\"a}t von Winterweizen (Triticum aestivum) auswirken. Hierf{\"u}r wurden im Zeitraum von M{\"a}rz bis August 2016 Untersuchungen auf einem ca. 40 ha großen Agroforstschlag und einer angrenzenden, konventionell bewirtschafteten Freifl{\"a}che bei Neu Sacro (Landkreis Spree-Neiße, Brandenburg) durchgef{\"u}hrt. Neben mikroklimatischen Kenngr{\"o}ßen wie der Lufttemperatur, der relativen Luftfeuchte, der Windgeschwindigkeit und der Globalstrahlung wurde auch die Evaporation nach Piche bestimmt. Erg{\"a}nzend wurden Ertragsmessungen zum Kornertrag und Messungen zum Blattfl{\"a}chenindex (LAI) des angebauten Winterweizens durchgef{\"u}hrt. Neben {\"A}nderungen der Tagesminima der relativen Luftfeuchtigkeit im Nahbereich der Geh{\"o}lzstreifen wurde eine Reduktion der durchschnittlichen Windgeschwindigkeit von bis zu 51 \% gegen{\"u}ber der Freifl{\"a}che festgestellt. Die Minderung der Evaporation im Vergleich zur Freifl{\"a}che betrug je nach Witterung bzw. N{\"a}he zum Geh{\"o}lzstreifen bis zu 58 \% und wurde dabei maßgeblich durch die Windgeschwindigkeit beeinflusst. R{\"a}umliche Unterschiede ergaben sich auch bez{\"u}glich des Kornertrags sowie beim LAI. So fielen die Kornertr{\"a}ge im Agroforstsystem mit bis zu 9,2 t ha-1 gegen{\"u}ber ca. 7,0 t ha-1 f{\"u}r die Referenzfl{\"a}che {\"u}berwiegend h{\"o}her aus. Mit Ausnahme des Leebereichs in 3 m Entfernung zum Geh{\"o}lzstreifen lagen auch die LAI-Werte des AFS {\"u}ber jenen der angrenzenden Freifl{\"a}che. Diese ersten Ergebnisse deuten darauf hin, dass in AFS durch Geh{\"o}lzstrukturen neben der Windgeschwindigkeit auch die Wasserverdunstung im Bereich der angrenzenden Ackerkulturen gemindert werden kann. Die mikroklimatischen Unterschiede wirkten sich dabei potentiell auch positiv auf das Wachstumsverhalten bzw. den Ertrag des Winterweizens aus. Vor dem Hintergrund einer Verringerung der potentiellen Evaporation und einer hieraus resultierenden h{\"o}heren Wasserverf{\"u}gbarkeit f{\"u}r die Ackerkulturen k{\"o}nnte die agroforstliche Landnutzung zuk{\"u}nftig auch f{\"u}r trockenheitsgef{\"a}hrdete Gebiete Mitteleuropas eine vorteilhafte Anpassungsstrategie des Ackerbaus an den Klimawandel darstellen.}, language = {de} } @inproceedings{VesteBoehmQuinkensteinetal., author = {Veste, Maik and B{\"o}hm, Christian and Quinkenstein, Ansgar and Freese, Dirk}, title = {Estimation of biological nitrogen fixation by black locust in short-rotation forests using natural 15N abundance method}, series = {EGU General Assembly 2012, held 22-27 April, 2012 in Vienna}, booktitle = {EGU General Assembly 2012, held 22-27 April, 2012 in Vienna}, publisher = {European Geophysical Society}, address = {Katlenburg-Lindau}, abstract = {The importance of short rotation forests and agroforestry systems for woody biomass production for bioenergy will increase in Central Europe within the next decades. In this context, black locust (Robinia pseudoacacia) has a high growth potential especially at marginal, drought-susceptible sites such as occur in Brandenburg State (Eastern Germany). As a pioneer tree species black locust grows under a wide range of site conditions. The native range of black locust in Northern America is classified by a humid to sub-humid climate with a mean annual precipitation of 1020 to 1830 mm. In Central and Eastern Europe, this species is cultivated in a more continental climate with an annual precipitation often below 600 mm. Therefore, black locust is known to be relatively drought tolerant compared to other temperate, deciduous tree species. Because of its N2-fixation ability black locust plays generally an important role for the improvement of soil fertility. This effect is of particular interest at marginal sites in the post-mining landscapes. In order to estimate the N2-fixation potential of black locust at marginal sites leaf samples were taken from black locust trees in short rotation plantations planted between 1995 and 2007 in post-mining sites south of Cottbus (Brandenburg, NE Germany). The variation of the natural 15N abundance was measured to evaluate the biological nitrogen fixation. The nitrogen derived from the atmosphere can be calculated using a two-pool model from the quotient of the natural 15N abundances of the N2-fixing plant and the plant available soil N. Because representatively determining the plant available soil N is difficult, a non-N2-fixing reference plant growing at the same site with a similar root system and temporal N uptake pattern to the N2-fixing plant is often used. In our case we used red oak (Quercus rubra) as a reference. The average nitrogen content in the leaves of black locust ranged from 3.1\% (C/N 14.8) in 15 years old trees to 3.4\% (C/N 14.4) in 3 year-old trees, respectively. A higher content of nitrogen was found in leaves of re-sprouted trees with 4.3\% (C/N 11.5). The estimated percentage of nitrogen derived from the atmosphere (\% NdfA) in black locust was 63\% - 83\% compared to 56\% in seabuckthorn (Hippopha{\"e} rhamnoides) and 79\% in common broom (Genista scuparia). The annual leaf biomass production of black locust varied between 1325 (2 years old trees) and 2576 kg/ha a (4 years old trees). The estimated leaf nitrogen fixed by Robinia was approx. 30.5 - 59.2 kg/ha a. From the results, we can conclude that the biological nitrogen fixation by Robina is an important factor for the nitrogen balance of short-rotation plantations on nutrient poor-soils.}, language = {en} } @inproceedings{TsonkovaBoehmHuebner, author = {Tsonkova, Penka and B{\"o}hm, Christian and H{\"u}bner, Rico}, title = {The biomass potential of existing linear woody-features in the agricultural landscape}, series = {Proceedings of the 4th European Agroforestry Conference Agroforestry as Sustainable Land Use 28-30 May 2018, Nijmegen, The Netherlands}, booktitle = {Proceedings of the 4th European Agroforestry Conference Agroforestry as Sustainable Land Use 28-30 May 2018, Nijmegen, The Netherlands}, editor = {Ferreiro-Dom{\´i}nguez, Nuria and Mosquera-Losada, Mar{\´i}a Rosa}, address = {Santiago de Compostela}, isbn = {978-84-09-02384-4}, pages = {527 -- 531}, abstract = {Linear woody-features, such as hedgerows, windbreaks, and riparian buffer strips, composed of trees and/or shrubs are anthropogenic features, established in the past for different purposes, such as provision of field boundaries, protection from wind and supply of fuelwood. Today, they are primarily valued for their ecological benefit, while their production function has received rather little attention. This study assessed the biomass potential of existing linear woodyfeatures in a study area in southern Brandenburg, Germany. The merchantable tree volume of the measured woody-features ranged between 240 m3 ha-1 and 710 m3 ha-1, depending on the relative proportion of trees and shrubs. The results suggest that the biomass potential of linear woody-features with predominant tree proportion per hectare can be higher than this of forests. A strategy for utilising the production function of these woody-features should take into account the provision of benefits such as wind protection, habitat provision and landscape aesthetics.}, language = {en} } @inproceedings{BoehmKanzlerMirck, author = {B{\"o}hm, Christian and Kanzler, Michael and Mirck, Jaconette}, title = {Einfluss agroforstlich genutzten Geh{\"o}lzstreifen auf die Begleitvegetation und die Bodenn{\"a}hrstoffgehalte angrenzender konventionell bewirtschafteter Ackerfl{\"a}chen}, series = {Anfoerungen an den Pflanzenbau in einer sich urbanisierenden Welt, 60. Jahrestagung der Gesellschaft f{\"u}r Pflanzenbauwissenschaften e.V., 26. bis 28. September 2017, Witzenhausen}, booktitle = {Anfoerungen an den Pflanzenbau in einer sich urbanisierenden Welt, 60. Jahrestagung der Gesellschaft f{\"u}r Pflanzenbauwissenschaften e.V., 26. bis 28. September 2017, Witzenhausen}, editor = {Kage, Henning and Sieling, K. and Francke-Weltmann, L.}, publisher = {Liddy Halm}, address = {G{\"o}ttingen}, pages = {52 -- 53}, abstract = {F{\"u}r die pflanzenbauliche Bewertung von Agroforstsystemen spielen m{\"o}gliche Effekte von Agroforst-Geh{\"o}lzen auf die Ertr{\"a}ge der Ackerkulturen eine entscheidende Rolle. Eine Beeinflussung der Ackerfruchtertr{\"a}ge kann direkt (z.B. durch Beschattung) oder indirekt (z.B. durch zus{\"a}tzliche N{\"a}hrstoffeintr{\"a}ge oder eine Ver{\"a}nderung des Mikroklimas) erfolgen. Ziel dieser Studie war es, m{\"o}gliche Einfl{\"u}sse von Energieholzstreifen auf die Begleitvegetation einerseits und auf die Kohlenstoff- und N{\"a}hrstoffgehalte des Bodens andererseits zu quantifizieren und ggf. mit r{\"a}umlichen Ertragsdifferenzen in Beziehung zu setzen.}, language = {de} } @inproceedings{BoehmTsonkovaZehliusEckert, author = {B{\"o}hm, Christian and Tsonkova, Penka and Zehlius-Eckert, Wolfgang}, title = {Wie k{\"o}nnen Agroforstsysteme praktikabel in das deutsche Agrarf{\"o}rderrecht eingebunden werden?}, series = {B{\"a}ume in der Land(wirt)schaft - von der Theorie in die Praxis, Tagungsband mit Beitr{\"a}gen des 5. Forums Agroforstsysteme 30.11. bis 01.12.2016 in Senftenberg (OT Brieske)}, booktitle = {B{\"a}ume in der Land(wirt)schaft - von der Theorie in die Praxis, Tagungsband mit Beitr{\"a}gen des 5. Forums Agroforstsysteme 30.11. bis 01.12.2016 in Senftenberg (OT Brieske)}, editor = {B{\"o}hm, Christian}, publisher = {BTU}, address = {Cottbus}, isbn = {978-3-940471-27-7}, pages = {7 -- 16}, abstract = {Damit Landwirte Agroforstsysteme verst{\"a}rkt umsetzen, m{\"u}ssen Agroforstfl{\"a}chen mindestens genauso f{\"o}rderberechtigt sein wie konventionelle Ackerfruchtfl{\"a}chen. Bislang finden Agroforstsysteme im deutschen Agrarf{\"o}rderrecht jedoch keine Ber{\"u}cksichtigung. Da die Agroforstwirtschaft eine sehr komplexe Form der Landnutzung ist, muss eindeutig dargelegt werden, unter welchen Bedingungen es sich um Agroforstfl{\"a}chen handelt und wann nicht. Hierf{\"u}r ist eine Definition von Agroforstschl{\"a}gen erforderlich, die den Agrarbeh{\"o}rden eine Kontrollf{\"a}higkeit erm{\"o}glicht. Eine solche Definition, die Geh{\"o}lzkulturen und Ackerkulturen auf einem Schlag vereint, ist bislang nicht mit dem deutschen Agrarf{\"o}rderrecht vereinbar. Dennoch erscheint es sinnvoll und notwendig, dass sich in den Agrarbeh{\"o}rden, vor dem Hintergrund einer verst{\"a}rkt geforderten Multifunktionalit{\"a}t in der Landwirtschaft, mehr und mehr von sektoralen Denkmustern verabschiedet und neuen integrativen Landbausystemen zugewandt wird. Hierzu k{\"o}nnte die agrarf{\"o}rderrechtliche Implementierung von Agroforstsystemen einen wertvollen Beitrag liefern. Der folgende Aufsatz zeigt mit dem Vorschlag f{\"u}r eine Agroforstschlag-Definition einen konkreten L{\"o}sungsansatz f{\"u}r den beh{\"o}rdlichen Umgang mit dieser Bewirtschaftungsform auf.}, language = {de} } @inproceedings{KanzlerBoehmMirck, author = {Kanzler, Michael and B{\"o}hm, Christian and Mirck, Jaconette}, title = {Microclimate effects of short rotation tree-strips in Germany}, series = {Celebrating 20 years of Agroforestry research in Europe, 3rd European Agroforestry Conference, Montpellier, 23-25 May 2016, Book of Abstracts}, booktitle = {Celebrating 20 years of Agroforestry research in Europe, 3rd European Agroforestry Conference, Montpellier, 23-25 May 2016, Book of Abstracts}, editor = {Gosme, Marie}, isbn = {978-2-87614-717-1}, pages = {321 -- 324}, abstract = {Multifunctional land use systems, such as agroforestry, are able to deliver several ecological services to agriculture in addition to the concurrent production of woody biomass and arable crops. For example, trees in agroforestry systems can provide shelter for wildlife and supply additional nutrients to adjacent arable fields through leaf litter inputs and fine root turnover. In addition, tree-strips have the ability to improve the groundwater quality underneath the tree-strip itself and possibly underneath adjacent fields. Unlike these commonly measured ecosystem services the microclimate conditions in temperate agroforestry systems are still a comparatively new study area (Kanzler et al. 2015, B{\"o}hm et al. 2014). This might be due to the complexity of the microclimate, which depends on various parameters such as the plant height, the planting density, and the orientation of the tree-strips. The objective of this study was to investigate the potential influence of tree-strips on microclimate using high resolution data loggers.}, language = {en} } @inproceedings{SchneiderBoehm, author = {Schneider, Roman and B{\"o}hm, Christian}, title = {Wie wirtschaftlich sind Anbau und Verwertung von Energieholz aus Agroforstwirtschaft in einem s{\"u}dbrandenburgischen Landwirtschaftsbetrieb?}, series = {B{\"a}ume in der Land(wirt)schaft - von der Theorie in die Praxis, Tagungsband mit Beitr{\"a}gen des 5. Forums Agroforstsysteme 30.11. bis 01.12.2016 in Senftenberg (OT Brieske)}, booktitle = {B{\"a}ume in der Land(wirt)schaft - von der Theorie in die Praxis, Tagungsband mit Beitr{\"a}gen des 5. Forums Agroforstsysteme 30.11. bis 01.12.2016 in Senftenberg (OT Brieske)}, editor = {B{\"o}hm, Christian}, publisher = {BTU}, address = {Cottbus}, isbn = {978-3-940471-27-7}, pages = {66 -- 75}, language = {de} } @inproceedings{MirckKanzlerBoehm, author = {Mirck, Jaconette and Kanzler, Michael and B{\"o}hm, Christian}, title = {Ertragsleistung eines Energieholz-Alley-Cropping-Systems}, series = {B{\"a}ume in der Land(wirt)schaft - von der Theorie in die Praxis, Tagungsband mit Beitr{\"a}gen des 5. Forums Agroforstsysteme 30.11. bis 01.12.2016 in Senftenberg (OT Brieske)}, booktitle = {B{\"a}ume in der Land(wirt)schaft - von der Theorie in die Praxis, Tagungsband mit Beitr{\"a}gen des 5. Forums Agroforstsysteme 30.11. bis 01.12.2016 in Senftenberg (OT Brieske)}, editor = {B{\"o}hm, Christian}, publisher = {BTU}, address = {Cottbus}, isbn = {978-3-940471-27-7}, pages = {47 -- 50}, language = {de} } @inproceedings{RiekenBoehm, author = {Rieken, Julia and B{\"o}hm, Christian}, title = {Untersuchungen zu Ertrag und Begleitflora einer agroforstlich bewirtschafteten Haferfl{\"a}che mit zwei Hafersorten}, series = {B{\"a}ume in der Land(wirt)schaft - von der Theorie in die Praxis, Tagungsband mit Beitr{\"a}gen des 5. Forums Agroforstsysteme 30.11. bis 01.12.2016 in Senftenberg (OT Brieske)}, booktitle = {B{\"a}ume in der Land(wirt)schaft - von der Theorie in die Praxis, Tagungsband mit Beitr{\"a}gen des 5. Forums Agroforstsysteme 30.11. bis 01.12.2016 in Senftenberg (OT Brieske)}, editor = {B{\"o}hm, Christian}, address = {Cottbus}, isbn = {978-3-940471-27-7}, pages = {121 -- 126}, language = {de} }