The research concerning the vegetation and landscaping included among other things the following points: Chemical, nutrient metal, gamma and radon analysis of surface soils of three closed sanitary landfills in Helsinki area.

• 除了其它研究以外,有关植被和景观的研究包括:在赫尔辛基地区三个已经封场的卫生填埋场地表土壤的化学、养分、金属含量、伽玛射线和氡含量的分析。