Читать книгу Applied Soil Chemistry - Группа авторов - Страница 28

Fundamentally, each type of land-surface vegetation type has characteristic carbon quantities and fabrics in its underlying soils. For instance, in temperate climates carbon contents tend to be higher than the global average and increase as latitude increases within the temperate zones. Reductions in temperature and increases in waterlogging of soils at higher temperate latitudes are the main causes of this trend. These changes tend to enable a constant stream of biomass to enter the soils but reduce organic matter degradation. The global average estimated carbon density per unit area of soil in various vegetated zones and ecosystems are listed in Table 1.1.