Substrate improving material and method for reducing greenhouse gas emission of lake sediments

The invention discloses a substrate improving material and a method for reducing greenhouse gas emission of lake sediments, the material is composed of akadama soil and chlorolite according to a certain proportion, and the method comprises the following steps: 1) selecting mineral materials akadama soil and chlorolite as raw materials; (2) pretreating the akadama soil and the chlorite; 3) uniformly mixing the pretreated akadama soil and the pretreated chlorophyll according to a certain proportion to prepare a substrate improvement material; 4) spreading the substrate improvement material to the lake bottom by a certain thickness; and 5) planting submerged plants, and reducing greenhouse gas emission of the sediments in the shallow lake through substrate improvement and synergistic effect of the submerged plants. The natural ecological matrix material has the advantages of being environmentally friendly, reasonable in formula, convenient to use, ecological, environmentally friendly and the like. Through the sy