(e.g., sugars), which can be readily used by NS-N2-fixing microorganisms. The quality and quantity of that C varies by plant species and life stage, and this may be responsible for observed seasonal variation in NS-N2fixation rates. Incereal cropsand grasses, rhizosheaths are enriched ...
and a detailed soil classification is provided in 32 articles. It is recommended to integrate at least a minimum data set on soil information in all research conducted in floodplains and riparian zones. This minimum data set comprises soil types, coarse fragments, texture and structure of the so...
All of these processes also have the potential to affect the share of comparatively labile pools in soils, such as particulate organic matter (POM). This pool is composed of partly decomposed plant fragments that have, if not occluded within aggregate structures, comparatively short residence time ...
(e.g., Osborn1948, Carson1962, Commoner1972; Blaikie and Brookfield1986). The historical stereotype ofland degradationis that it is a process ruining the planet, and a destruction caused by ignorant peasants, who will in short time reap the folly of their degrading activities. Hailey's (...
2. This reduction varies depending on soil texture, with coarse-textured soils showing a more significant decrease than fine-textured soils Modeling studies have demonstrated that as the soil dries, water potential drops significantly in the vicinity of roots (referred to as the rhizosphere), ...
Still, earthworm distribution varies because of their species-specific traits and food preferences [4]. Earthworms feed on mineral soil and associated soil organic material (SOM), such as litter from fine roots, fallen leaves, and branches [5]. Hence, forests and grasslands that yield year-...
Soil compaction varies across most fields. The key factors affecting soil compaction include soil texture; soil moisture/wetness; soil strength; type and weight of agricultural equipment, tillage layer, tire type, and inflation pressure; and the number of traffic passes (Salokhe & Ninh, 1993; Eli...
5%)（有机质）Litter,animaldung,deadremainsofplantsandanimals,humus枯枝落叶，动物粪便，已死亡动植物的尸体，腐殖质Humus:blackordarkbrownmaterialthatremainsafterdecomposition腐殖质：遗体被分解后形成的黑色或深褐色物质Helpstobindmineralions有助于矿物离子结合Holdswaterinsoil保持土壤中的水分Water(25%)Air(25%)...
However, newly emerging evidence indicates that the electron transfer role of Fe exerts a crucial influence upon SOC turnover. In this review, we address the pathways of Fe mineral-associated soil organic carbon (Fe-SOC) formation and decomposition, and summarize the Fe-mediated biogeochemical, ...
where RsWarmingand RsControlare Rs (μmol m−2s−1) in warmed and control plots, respectively, andTWarmingandTControlare the topsoil temperatures (°C) in warmed and control plots, respectively. After normalization, we found that the Rs response was much stronger upon thermokarst formation ...