Andreas Thon

Prof. Dr. Andreas Thon

Function: Head of Institute
Organizational Unit(s):Department of Landscaping & Vegetation TechnologyProfessorship for Construction Technology in Landscaping
Committees: Committee for Research & Development (FuEAus)
Phone: +49 6722 502 758
eMail: Andreas.Thon(at)
Postal Address:Von-Lade-Straße 1
D-65366 Geisenheim
Address: Building 6601
Room 125
Rüdesheimerstraße 28
65366 Geisenheim

Mr. Thon started his horticultural education as a gardener, landscaping and sports field gardener in 1997. In 2004, Andreas Thon graduated with a Diploma in Landscape Architecture and Environmental Planning from the TFH Berlin. In the years 2004-2006 he was a partner of a medium-sized gardening and landscaping company with an average of 35 employees. From 2006 to 2010, Mr. Thon worked at the Anhalt University of Applied Sciences in a research project funded by the BMBF with the theme: Vegetation on filters pervaded filters in private swimming ponds. The project management was under the responsibility of Prof. Dr. Kircher. On December 23, 2009, Mr. Thon received his Master's degree in International Architecture, an English-language master's program Landscape Architecture: Shallow Constructed Roof Wetlands for Gray Water Treatment. Intermittenly flushed Wetlands as Roof Gardens in Mediterranean Countries. After completion of the research project, Mr. Thon founded a special aquatic plant nursery for private swimming ponds with the aim to produce oligotraphic aquatic plants in pure mineral substrate including liquid fertilization (nitrate monitoring) under constant flow through the breeding sites. On July 21, 2014, Mr. Thon defended his dissertation at the University of Vechta with the title: "Investigation of vegetation and flow through the filter zone of small bath ponds".
Since 2007 Mr. Thon has been involved in lectoring. Since the beginning as a lecturer at the Anhalt University of Applied Sciences Bernburg in the subjects "drainage and irrigation technology" and since 2015/2015 as a lecturer at the HGU in the subject "building construction and small-scale architecture" in landscape architecture
Since 1.5.2016, Mr. Thon has held the Chair of Structural Engineering in Landscape Architecture at Geisenheim University.

Research Projects

Project start: 01.07.2023
Project end: 30.06.2026
Sponsor: Bundesministerium für Umwelt, Naturschutz und nukleare Sicherheit

The preservation and planting of urban green, especially trees, play a crucial role in the adaptation of cities to global heating, as they provide natural cooling. Larger trees transpire up to 500 litres of water per day. Shade and evaporative cooling reduce the effect of urban heat islands. However, road salt, soil compaction and pollutants stress urban trees. Heat and drought intensify, so that new plantings often fail to grow and existing trees increasingly die before they reach a size that has an impact on the city's climate. Alternative tree substrates could provide a remedy, and also improve the infiltration of water from heavy rainfall events. One promising approach are biochar macadam substrates (PMS), i.e. defined mixtures of rock gravel, plant charcoal and compost. After compaction, the crushed stone results in a passable but pore-rich structure that creates space and aaeration for root growth and which are capable of absorbing high levels of precipitation. The production of the biochar also locks up biomass carbon over decades to millennia (=carbon sinks, i.e. carbon (dioxide) removal). PMS were developed in Stockholm and are so far only used in Sweden, Austria and Switzerland. The goal of "Black2GoGreen" is to create a network of municipalities, municipal enterprises, associations as well as manufacturers of biochar and biochar (tree, green-roof) substrates to transfer knowledge about already implemented solutions to Germany.