Fritz Kleinschroth teaches and conducts research on the conservation and restoration of biodiversity, particularly in the context of global land systems and vegetation change. His particular focus is on reconciling biodiversity, social justice and the functionality of built infrastructure inside and outside cities, especially regarding renewable energy development and urban green infrastructures. He uses spatial data, e.g. based on drones and satellite imagery, to analyse vegetation changes and communicate biodiversity issues in planning processes.

He completed his dual doctorate degree in 2016 as part of an EU scholarship at AgroParisTech in France and Bangor University in Wales on the topic of "Roads in rainforests". He then worked first as a postdoc and later as a senior scientist in the Ecosystem Management Group at ETH Zurich in Switzerland. With his inter- and transdisciplinary research approach, he collaborated, among others, with the Forest Stewardship Council (FSC) and the Consultative Group on International Agricultural Research (CGIAR), was a fellow of the Robert Bosch Foundation's Postdoctoral Academy for Transformational Leadership and a board member of the Swiss network for urban forestry, ArboCityNet.

As a landscape planner, he is committed to biodiversity net-gain in the development of infrastructure projects and urban planning. To this end, he combines large-scale spatial analyses and global syntheses of case studies about biodiversity development under human influence with field-based mapping, visualisations and surveys. The aim of his work is to understand the different perspectives of users in human-dominated landscapes and to jointly create integrated solutions for biodiversity development.