ORGANIC CARBON DYNAMICS IN GRASSLAND SOILS. 1. BACKGROUND INFORMATION AND COMPUTER SIMULATION
نویسندگان
چکیده
منابع مشابه
Sequestered Organic Carbon Status in the Soils under Grassland in Uttarakhand State, India
Vegetative growth serves as an important means to capture and store atmospheric carbon dioxide in biomass and soil. Grassland soils are high in soil organic carbon and contain an extensive fibrous root system that creates an environment ideal for soil microbial activity. Accurate quantification of SOC pool is needed to generate benchmark information for the present and to determine the changes ...
متن کاملRole of large-scale soil structure in organic carbon turnover: Evidence from California grassland soils
[1] We characterized the effect of large-scale (>20 mm) soil physical structure on the age and recalcitrance of soil organic carbon (SOC) in upper (A) and lower (B) horizons of grassland soils from California’s Central Valley. The radiocarbon content of SOC from surfaces and interiors of large-scale soil structural units (‘‘peds’’) was measured in order to characterize the spatial distribution ...
متن کاملWeathering Controls on Mechanisms of Carbon Storage in Grassland Soils
On a sequence of soils developed under similar vegetation, temperature and precipitation conditions, but with variations in mineralogical properties, we use organic carbon and C inventories to examine mineral protection of soil organic carbon. In these soils, C data indicates that the creation of slow-cycling carbon can be modeled as occurring through reaction of organic ligands with Al and Fe ...
متن کاملOrganic Carbon in Soils of the World
The loss of organic matter from soil is mainly the result of the clearing of forests for grassland or cropland. On the basis of the assumptions outlined here, the annual loss of organic carbon from the world's soils is between 2.5 x 1015g and 7.4 x 1015g, with 4.6 x 1015g being considered a realistic estimate. These amounts are 0.2, 0.5 and 0.3 per cent of the toial organic carbon (1477x 1015g)...
متن کاملSoil Respiration and Organic Carbon Dynamics with Grassland Conversions to Woodlands in Temperate China
Soils are the largest terrestrial carbon store and soil respiration is the second-largest flux in ecosystem carbon cycling. Across China's temperate region, climatic changes and human activities have frequently caused the transformation of grasslands to woodlands. However, the effect of this transition on soil respiration and soil organic carbon (SOC) dynamics remains uncertain in this area. In...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Canadian Journal of Soil Science
سال: 1981
ISSN: 0008-4271,1918-1841
DOI: 10.4141/cjss81-024