@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} } @inproceedings{MirckKanzlerBoehmetal., author = {Mirck, Jaconette and Kanzler, Michael and B{\"o}hm, Christian and Freese, Dirk}, title = {Sugar beet yields and soil moisture measurements in an alley cropping system}, 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 = {282 -- 285}, abstract = {Agroforestry for arable farmers is not a common practice in Germany. However, alley cropping for woody biomass production is of interest because of its high potential to concurrently provide a biomass feedstock and an arable crop. One of the systems that exists, although at an experimental level, is the integration of rows of fast growing trees, such as poplar or willow, with arable crops. The experimental plots were initially established as part of the German joint research project "AgroForstEnergie - Economic and Ecological Evaluation of Agroforestry Systems in Farming Practice", funded by the German Federal Ministry of Food and Agriculture (AgroForstEnergie 2015). The goal of this project was to study alley cropping systems, which concurrently produce a woody biomass feedstock and conventional agricultural crops. Currently the work is continued through the AGFORWARD Project. The State of Brandenburg is known for its light sandy soils that are prone to wind erosion. The introduction of tree hedgerows within the agricultural landscape can reduce wind erosion (B{\"o}hm et al. 2014). In addition, microclimatic conditions such as soil moisture, wind speed reduction, relative humidity and air temperature have been more favourable for plant growth in crop alleys compared to reference crop areas (B{\"o}hm et al. 2014; Quinkenstein et al. 2009). Sugar beets are a common crop for conventional agricultural systems in Western Europe. As part of agroforestry systems, sugar beets have rarely been studied. Even though sugar beets can root up to a depth of 2 meter, their yields can be significantly reduced due to a lack of water (Hoffmann 2010; Bloch et al. 2006). Agroforestry systems that consist of tree hedgerows and crop alleys, also known as Alley Cropping Systems, have the potential to increase plant moisture in comparison to conventional agricultural systems (Quinkenstein et al. 2009). This study aims to assess tree hedgerow effects on sugar beets. The objectives of this study were to; 1) assess how tree hedgerows planted at three distances affected sugar beet yields; 2) to correlate soil moisture values of the top 15 cm with sugar beet yields at the same distance of the tree row; 3) to assess the effects of drought stress on sugar beet yield.}, language = {en} } @inproceedings{TsonkovaMirckBoehmetal., author = {Tsonkova, Penka and Mirck, Jaconette and B{\"o}hm, Christian and F{\"u}tz, Bettina and Freese, Dirk}, title = {The lack of a clear definition of agroforestry hinders its acceptance 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 = {259 -- 262}, abstract = {Agroforestry systems are receiving increasing attention in the temperate region due to their ability to counteract negative consequences of intensively managed agricultural fields. Examples of traditional agroforestry (AF) in central Europe are orchard meadows "Streuosbt", hedgerows "Knicks" and windbreaks. Traditional AF systems are considered to be areas of high natural and cultural value (HNCV), and as such have been recognized to support high biodiversity levels. Recently, modern AF systems which are well adapted to the current farming practices and are compatible with mechanized agriculture have emerged. Modern practices such as alley cropping system for woody biomass production (ACS), composed of strips of fast growing trees and agricultural crops grown in alleys between the tree rows, can supply market goods and environmental services at the same time (Gruenewald et al. 2007, Quinkenstein et al. 2009). However, farmers in Germany have been reluctant to implement the latter systems, because agricultural policies have limited the number of trees within agricultural systems, while the former have been in danger of abandonment throughout Europe. As a result many farmers have lost interest in AF, and those that inherited land with traditional AF systems may not recognize them as such, because they are not recognized as AF according to the EU policy. The aim of this work was to investigate familiarity with agroforestry in Germany.}, language = {en} } @inproceedings{MirckKanzlerBoehmetal., author = {Mirck, Jaconette and Kanzler, Michael and B{\"o}hm, Christian and Freese, Dirk}, title = {Sugar beet yields in an alley cropping system during a dry summer}, series = {Social and technological transformation of farming systems: Diverging and converging pathways, 12th European IFSA Symposium, Newport, 12-15 July 2016, Book of Abstracts}, booktitle = {Social and technological transformation of farming systems: Diverging and converging pathways, 12th European IFSA Symposium, Newport, 12-15 July 2016, Book of Abstracts}, editor = {Wilcox, Andrew and Vinall, Samantha}, publisher = {Harper Adams University}, address = {Newport, Shropshire}, pages = {80 -- 82}, abstract = {Agroforestry (the integration of trees with crop and/or livestock production) offers a pathway to diversify agricultural production. Agroforestry systems have the potential to improve on-farm use of water through enhanced soil water holding capacities, the provision of shade, and the creation of wind shelter. These three characteristics can also improve the resilience of agricultural production in response to changing weather patterns. The objectives of this study were: 1) to measure how alley cropping systems with varying alley widths affect crop microclimate, 2) to measure the effects of this microclimate on sugar beet (Beta vulgaris) yields, and 3) to assess how moisture availability affects sugar beet growth patterns. Measurements were made in a 70 ha alley cropping system comprising black locust (Robinia pseudoacacia L.) and hybrid poplar Max1 (Populus suaveolens subsp. maximowiczii x P. nigra). A sugar beet crop was grown during the relatively dry growing season of 2015. Sugar beet yields were reduced in close proximity to the hedgerow, but yields were higher at and beyond an intermediate distance when compared with those in a nearby conventional agricultural field. Moisture availability significantly affected growth patterns of sugar beet roots.}, language = {en} } @inproceedings{MirckBoehmKanzleretal., author = {Mirck, Jaconette and B{\"o}hm, Christian and Kanzler, Michael and Freese, Dirk}, title = {Blattstreumengen in Geh{\"o}lzstreifen und angrenzenden Ackerbreichen innerhalb eines Agroforstsystems}, series = {Multifunktionale Agrarlandschaften - Pflanzenbaulicher Anspruch, Biodiversit{\"a}t, {\"O}kosystemdienstleistungen, 58. Jahrestagung der Gesellschaft f{\"u}r Pflanzenbauwissenschaften e.V., 22. bis 24. September 2015, Braunschweig}, booktitle = {Multifunktionale Agrarlandschaften - Pflanzenbaulicher Anspruch, Biodiversit{\"a}t, {\"O}kosystemdienstleistungen, 58. Jahrestagung der Gesellschaft f{\"u}r Pflanzenbauwissenschaften e.V., 22. bis 24. September 2015, Braunschweig}, editor = {Kage, Henning and Sieling, K. and Francke-Weltmann, L.}, publisher = {Halm}, address = {G{\"o}ttingen}, pages = {219 -- 220}, language = {de} } @inproceedings{KanzlerBoehmMircketal., author = {Kanzler, Michael and B{\"o}hm, Christian and Mirck, Jaconette and Freese, Dirk}, title = {Variabilit{\"a}t des Mikroklimas im Einflussbereich der geh{\"o}lzstreifen eines Agroforstsystems}, series = {Multifunktionale Agrarlandschaften - Pflanzenbaulicher Anspruch, Biodiversit{\"a}t, {\"O}kosystemdienstleistungen, 58. Jahrestagung der Gesellschaft f{\"u}r Pflanzenbauwissenschaften e.V., 22. bis 24. September 2015, Braunschweig}, booktitle = {Multifunktionale Agrarlandschaften - Pflanzenbaulicher Anspruch, Biodiversit{\"a}t, {\"O}kosystemdienstleistungen, 58. Jahrestagung der Gesellschaft f{\"u}r Pflanzenbauwissenschaften e.V., 22. bis 24. September 2015, Braunschweig}, editor = {Kage, Henning and Sieling, K. and Francke-Weltmann, L.}, publisher = {Halm}, address = {G{\"o}ttingen}, pages = {77 -- 78}, language = {de} } @inproceedings{BoehmKanzlerMircketal., author = {B{\"o}hm, Christian and Kanzler, Michael and Mirck, Jaconette and Freese, Dirk}, title = {Effekte agroforstlicher Wirtschaftsweisen auf die Grundwasserqualit{\"a}t von Ackerstandorten}, series = {Multifunktionale Agrarlandschaften - Pflanzenbaulicher Anspruch, Biodiversit{\"a}t, {\"O}kosystemdienstleistungen, 58. Jahrestagung der Gesellschaft f{\"u}r Pflanzenbauwissenschaften e.V., 22. bis 24. September 2015, Braunschweig}, booktitle = {Multifunktionale Agrarlandschaften - Pflanzenbaulicher Anspruch, Biodiversit{\"a}t, {\"O}kosystemdienstleistungen, 58. Jahrestagung der Gesellschaft f{\"u}r Pflanzenbauwissenschaften e.V., 22. bis 24. September 2015, Braunschweig}, editor = {Kage, Henning and Sieling, K. and Francke-Weltmann, L.}, publisher = {Halm}, address = {G{\"o}ttingen}, pages = {83 -- 84}, language = {de} } @inproceedings{BoehmQuinkensteinFreese, author = {B{\"o}hm, Christian and Quinkenstein, Ansgar and Freese, Dirk}, title = {Agrarholzproduktion und Agroforstsysteme - Chancen und Risiken f{\"u}r den Gew{\"a}sserschutz}, series = {Wirkung und Folgen der Nutzung von Biomasse zur Biogasgewinnung auf B{\"o}den und Gew{\"a}sser, 12. - 13. Oktober in Suderburg}, booktitle = {Wirkung und Folgen der Nutzung von Biomasse zur Biogasgewinnung auf B{\"o}den und Gew{\"a}sser, 12. - 13. Oktober in Suderburg}, pages = {145 -- 158}, language = {de} }