Biofunctool®: a new framework to assess the impact of land management on soil quality. Part A: concept and validation of the set of indicators

•Biofunctool® is a new comprehensive framework to assess soil quality.•Biofunctool® assesses three key integrated soil functions.•Biofunctool® consists of twelve in-field time- and cost-effective indicators.•The set of indicators was validated in terms of reliability, non-redundancy and sensitivity.