The most commonly used indicators of sustainable peatland management are soil organic matter, water table depth, peat depth, peat decomposition, and vegetation cover. Other indicators used to assess the sustainability of peatland management include the number of species present, the presence of invasive species, and the condition of the surrounding watersheds. These indicators are used to measure the overall health of the peatland and to determine whether management practices are having a positive or negative impact.

Rates and amount of peat accumulation is the main one :)