Читать книгу Applied Soil Chemistry - Группа авторов - Страница 31

Woodlands consisting of conifer, deciduous or mixed tree types, particularly in high-latitude forests tend to have soils with carbon densities similar to, or somewhat higher than, undisturbed natural grasslands. Higher latitude coniferous forests tend to retain much higher soil carbon densities than deciduous temperate woodlands [41].

Sun et al. (2019) [22] evaluated the long-standing impacts of temperature, litter inputs, soil characteristics, and vegetation type on the carbon content in the top 20 cm of soils in forests along a climatic gradient in China content of the 0- to 20-cm soil layer and its fractions across three wet forested sites of contrasting climatic zones in China. They found that as mean annual temperature increased organic carbon in the soil samples reduced, whereas annual litter-fall and soil microbial respiration increased. Carbon compounds displaying greater stability were better preserved in those forest soil samples from warmer climates. This was considered to be the most likely caused by the more rapid breakdown of less stable carbon molecules in warmer climate forest soils.