Livestock grazing affects both the plants growing above ground and the seeds in the soil. A study in China's Hei-wa-wu wetland found that annual plants and those from the land dominated the soil seed bank in both grazed and ungrazed areas. Grazing didn't change the number of seeds or types of plants, but it did alter which plants were present. Grazing made the soil seed bank more similar to the plants growing above ground. The study showed that livestock grazing strongly influences the relationship between the soil seed bank and the plants in the wetland.