NOVELTY - The system has support members (108) provided with U-shaped parts, and trays (106) provided with first protrusions (109) on one side and provided with second protrusions (110) on another side. The first protrusions are received in the U-shaped parts of the first support member and the second protrusions are used for placing against the U-shaped parts of the second support member such that the trays are attached to a structure in a secured manner by using two support members. The support members are mounted releasably on profiles, strips (107) or cables.    USE - System for partially covering a structure e.g. wall or roof, with trays with plants and/or solar panels or signs with traffic directions or advertising messages, for a noise barrier (claimed).    ADVANTAGE - The support members can be mounted releasably on the profiles, strips or cables such that the releasable support members can be mounted easily and quickly on the profiles, strips or cables on site, thus enhancing flexibility of the system, and allowing the trays to opt for diverse dimensions and making distance between adjacent support members to be adapted to the desired dimensions of the trays. The structure is provided beforehand in direction of the columns with strips or profiles running parallel to each other and provided with mutually equidistant support members on which the trays support, so that the trays and/or panels can be placed on the support members in a simple manner. The structure is provided beforehand in a direction of the columns with the cables of the system such that the cables are tensioned over a non-concave structure and the cables fix the support members, and each tray is individually and clampingly received between two adjacent support members and automatically secured by clamping, so that the system can be applied in a surface i.e. roof, curved in one direction and only requires fixing of the outer ends of the cables, thus avoiding need to drill into the roof. The trays are filled prior to mounting with a substrate in which sedum, moss and/or succulents are planted or sown, thus realizing an attractive green roof and/or a green wall, which requires no maintenance. The U-shaped parts have an edge, which extends in opposite direction to an upright edge, contributes toward the clamping arrangement of the protrusions behind an element, serves as a spacer for maintaining a desired distance between the tray and the structure, thus preventing adverse effect of moisture on the structure.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following:    (1) a noise barrier    (2) a method for covering a structure with trays with plants and/or panels.    DESCRIPTION OF DRAWING(S) - The drawing shows a partial sectional view of a system for partially covering a structure with trays with plants and/or panels.    Trays (106)    Strips (107)    Support members (108)    Protrusions (109, 110)