Soil ! organic ! carbon ! (SOC) ! plays ! an ! important ! role ! in! climate ! change ! regulation ! notably ! through ! release ! of CO2! following ! land ! use ! change ! such ! a! deforestation, ! but ! data ! on ! stock! change ! levels ! are ! lacking. ! This! study aims! to ! empirically ! assess ! SOC ! stocks ! change ! between ! 1991 ! and! 2011 ! at! the ! landscape ! scale ! using !...

Encouraging agricultural and forestry carbon sequestration and greenhouse gas mitigation is a necessary tool to meet U.S. emissions targets at minimum cost, but implementation challenges have relegated the agriculture and forestry sector to a marginal role in national and international cap-and-trade and energy policies, including those currently being discussed by U.S. legislators. However, the...

Establishment of the Kyoto Protocol has resulted in an effort to look towards living biomass and soils for carbon sequestration. In order for carbon credits to be meaningful, sustained carbon sequestration for decades or longer is required. It has been speculated that improved land management could result in sequestration of a substantial amount of carbon in soils within several decades and the...

Peatlands contain large amount of carbon stock that is vulnerable to release into the atmosphere. Mostly because of human impact, the peatlands at Zoige Wetlands face severe degradation, and the groundwater table is now lower than before, which has increased the population of the plateau zokor, a burrowing rodent. However, the impact of these changes on ecosystem carbon flows has not been studi...

Soil salinization is closely related to land degradation, and it supposed exert a significant negative effect on soil organic carbon (SOC) stock dynamics. This its mechanism have been examined at site transect scales in previous studies while over large spatial extent, the salinity-induced changes SOC space time less quantified, especially by machine learning remote sensing techniques. The main...

Soils were collected from a broad leaf-Pinus massoniana mixed forest, a Chinese fir (Cunninghamialan ceolata)-Pinus massoniana mixed forest, and a pure Pinus massoniana subtropical forest for subsequent analyses to compare characteristics of soil organic carbon and microbial biomass carbon content. Soil organic carbon mineralization characteristics were further modeled using a double exponentia...

Litter decomposition is an important process in the global carbon cycle. It accounts for most of the heterotrophic soil respiration and results in formation of more stable soil organic carbon (SOC) which is the largest terrestrial carbon stock. Litter decomposition may induce remarkable feedbacks to climate change because it is a climate-dependent process. To investigate the global patterns of ...