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Abbreviated  headlines are as follows: 'Roadside' = Roadside;  'Plot' = Plant communities on the roadsides;  'GPS_coordinates' = GPS coordinate from the selected roadsides;  'Age' = Age of the roadside in years; 'Mowing' =  Mowing regime (M=Mown, U=Unmown); 'Road_Type' = Type of roadside  (E=Embankment, C=Cutting); 'Clay' = Clay content in soil in %;  'Silt' = Silt content in soil in %; 'Sand' = Sand  content in soil in %; 'SOC' = Soil organic content in g.kg-1;  'SoilN' = Soil total nitrogen content in g.kg-1; 'CEC'  = Cationic exchange capacity in meq.kg-1; 'Soil_pH' = Soil pH in  water; 'SoilP' = Soil available phosphorus in g.kg-1;  'SRL' = Specific root length in m.g-1; 'shannon' =  Shannon index; 'simpson' = Simpson index; 'RNC' = Root  nitrogen content in mg.g-1; 'RCC' = Root carbon content in  mg.g-1; 'RDMC' = Root dry matter content in mg.g-1;  'Dm' = Mean root diameter in mm; 'RMD' = Root mass  density in kg.m-3 of soil; 'graminoid' = ground cover of  graminoid species in %; 'herbaceous' = ground cover of  herbaceous species in %; 'shrub' = ground cover of shrub species  in %; 'tree' = ground cover of tree species in  %Erktan_JECol2018_.xlsx", "keywords": ["2. 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