EFFECTS OF PROPERTIES OF GREENING REVETMENTS ON CONCORDANCE WITH AMBIENT LANDSCAPES

Abstract

 Effects of three factors (plant cover rate, shape of unit revetment, and plant height) on landscape evaluation of greening revetments were examined using concordance and indistinctiveness scores for 162 photomontages changed combination of the three factors by questionnaire survey. The concordance scores were greater when the cover rate was higher, the shape type was stair, and plant height types were low and high-low mixture. The indistinctiveness scores were greater when cover rate was higher, shape type was stair, and plant height type was high-low mixture. The effects of the three factors on both scores were similar and the both sores were positively correlated. The both scores exceeded the average score (score three out of five) only when the cover rate was more than 70%. These results suggest that plant cover rate should mainly improve landscape evaluation of greening revetments although shape of unit revetment and plant height also affect in part. Hence, greening revetments without plant cover should be underestimated as compared to greening revetment in the field.