Assessment method of roof greening in Lanzhou icth based on fuzzy comprehensive evaluation

Abstract

Abstract: The purpose of this paper is to explore a scientific and effective evaluation method of roof greening in combination with natural geographical conditions. The roof greening of Lanzhou city was selected as the research object. In this study, the evaluation index system is constructed from the aspects of design rationality, cost input, green benefit, and maintenance quality. The fuzzy comprehensive evaluation method is used to evaluate the roof greening status in Lanzhou. The results demonstrate that Lanzhou City's comprehensive evaluation of roof greening is mostly in the middle and poor level, which has a large space to be improved. The physical and chemical characteristic index of roof greening substrate is lower and the lack of attention to the construction of drainage and aquifer layer is the binding factor affecting the green benefits of roof greening. The insufficient investment in managed funds and general maintenance personnel with low professional ability are the restrictive factors affecting the green benefits of roof greening. In this paper, the evaluation index system and its weight about roof greening based on geographical characteristic are scientific and effective to some extent. These results can provide a reference for urban eco-environmental resource management and planning in arid and semi-arid areas.

Key words: roof greening, status assessment, fuzzy comprehensive evaluation, Lanzhou city

CLC Number:

LIU Ben-teng, ZHOU Yu-qing, WANG Xue-ping, LIU Qi. Assessment method of roof greening in Lanzhou icth based on fuzzy comprehensive evaluation[J]. Journal of Lanzhou University of Technology, 2022, 48(6): 120-126.

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