NOVELTY - Substrate comprises polypropylene matrix or polyvinyl chloride hot melt wiredrawing steel.    USE - The Substrate is useful for constructing water restoring gullies and micro sewage outlets interceptor belt (claimed).    ADVANTAGE - The substrate comprising the planting layer fiber matrix strip is capable of simulating the effect of natural materials in the pores which forms the thriving place of aquatic animals, so as to achieve a rich habitat functional effect (claimed), and bio-films prevents the loss of function seasonally of traditional perennially plants located along the buffering zone; has loose porous having lightweight pressure property, and specific ecological function, and good biocompatibility, and a layer of both interception and landscape, and ecological functions of preliminary constructed complete structure; and facilitates pre-culturing or inserting cuttings of emergent, submerged or floating plants into tappet water. The method is suitable for pre-cultivation of plants, and microorganism in standard manner, so as to rapidly complete the onset operation.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for constructing water restoring gullies and micro sewage outlets interceptor belt by using substrate, comprising (i) placing a discharge port at the center, and placing few fixed poles along the periphery to a certain distance, and choosing a bamboo material, cement pile or metal tube, as a fixed point; (ii) assembling cuboidal or cylindrical substrate fiber so as to meet the requirements of construction of rectangular shape intercept belt modules, and planting plants along the hollow structure of fiber matrix module according to requirements; (iii) transporting the fiber matrix module into a construction site, and directly passing the metal fiber rod or nylon rope through the matrix intercepted with fixing pile fixed with fixing point; and (iv) arranging aquatic plants of different type into inner and outer surfaces of the fiber matrix modules, and obtaining filaments of natural bio-film on the surface of the substrate after 10-10 days, where the bio-film exhibits microbiological decontamination ability, and rapid survival rate of aquatic plants.