The process of peat formation is influenced by several factors including, its location and surrounding environment.
Coastal peat, which is peat that is formed near the coast and ins influenced by sea tides. Coastal peat soil is enriched by minerals from seawater. Coastal peat vegetation is dominated by mangroves.
Transitional peat, which is peat that is formed between a coastal and an inland area, and has some of the properties of either types of peat. Vegetation on transitional peat is dominated by mangrove forests and broad-leaved trees.
Inland peat, which is only affected by rainwater as it is located far from the sea. Inland peat vegetation is dominated by broad-leaved trees.
Topogenous peat, which is located directly above mineral soil (substratum) at the bottom of a basin/lake. Topogenous peatlands are formed in an environment that is influenced by tidal/river runoff.
Ombrogenous peat, formed along with the thickening of the peat layer and increasing level of decomposition of plants that grow on topogenous peat. Ombrogenous peatlands are formed in environments that only depend on rainwater.