Vegetation recovery ecological matrix and preparation method thereof

The invention relates to a vegetation recovery ecological matrix and a preparation method thereof. The vegetation recovery ecological matrix is composed of, by weight percentage, 20-45% of dry sludge,20-45% of decomposed and dewatered sludge, 12-20% of coir fiber and 12-20% of straw, wherein the dry sludge is prepared by drying dewatered sludge. The vegetation recovery ecological matrix is mainlyprepared from the raw materials of the dry sludge, the decomposed and dewatered sludge, the coir fiber and the straw, and when penetrating through saline-alkali sandy soil via percolate, can providefavorable conditions for survival and accelerated reproduction of soil microorganisms, improve the granular structure of sandy soil, reduce the soil bulk density of the sandy soil, improve the physicochemical properties and the biological properties of the soil, promote soil maturation, accelerate vegetation establishment on barren soil such as the saline-alkali sandy soil and update the soil ecological system. 本发明涉及种植被恢复用生