Projects: Evapotranspiration Landfill Cover in Berlin- Tree Species Survivability Trials and Establishment

Project Site
Berlin, Germany
Contact Person
Hans-Holger Liste, Ph.D. ,
Purpose of Project

The former municipal solid waste landfill Altablagerung Wannsee (AAW) in southwestern Berlin was chosen for installation of an evapotranspiration (ET) landfill cover design. This design relies on a qualified soil-vegetation barrier to minimize or prevent water from infiltrating into the underlying waste, thereby minimizing leachate generation. Scots pine (Pinus silvestris) saplings were planted on the AAW into the grass-covered top soil layer (silty sand compost blend) in 2005. Most of the 14,000 planted pines died the same year. Three experimental field plots were established in 2006 to tackle this problem, including the alternative planting of Austrian pine (Pinus nigra) and Norway spruce (Picea abies). The plot locations represent locally common topographical and exposure conditions. Ecotechnology means are being tested for increasing survival and growth of the conifers. Environmental site conditions are characterized regularly, emphasizing key soil parameters, vegetation composition, and weather.

Project Durarion
In progress since February 2006
Project Status
Project Media
Wastewater: landfill leachate
Contaminant categories
Health/exposure concerns
Minimizing leachate generation from landfills also minimizes groundwater transport of contaminants to drinking or irrigation water sources.
Phytotechnology mechanism
Plant Species
Pinus silvestris (Scots Pine), Pinus nigra (Austrian Pine), Picea abies (Norway Spruce)
Remediation Enhancing Additives
Project Scale
Pilot Scale
Remediation Location
In Situ
Remediation volumn/area
220,000 m2
Project Costs
10 Mio. Euros
Secondary Value/Uses for Project Land and Plants


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