Results 241 to 250 of about 3,091,855 (300)

Microbial processing of organic matter drives stability and pore geometry of soil aggregates

, 2020
The formation and stability of aggregates are crucial for soil function. Here we seek to understand the influence of microbial processing on the formation of aggregates in a structurally homogeneous microcosm, treated with two different types of organic ...
S. Rabbi, B. Minasny, A. McBratney, I. Young   +3 more
semanticscholar   +1 more source

Aggregation and Aggregate Stability in Forest and Range Soils

Soil Science Society of America Journal, 1988
Abstract A simple method for measuring aggregation and aggregate stability across soils of widely varying structure and texture is presented. The method uses standard techniques of particle‐size analysis to measure yield of fine particles (<26‐µm estimated spherical diam.) after three types of dispersion treatments: shaking in ...
T. C. Strickland, E. A. Kerle, P. Sollins, D. S. Schimel   +3 more
openaire   +1 more source

Physicochemical determinants in stabilizing soil aggregates along a hydrological stress gradient on reservoir riparian habitats: Implications to soil restoration

, 2020
Stability of soil aggregates, playing a significant role in soil quality, has been greatly impacted by wetting-drying cycles. Yet, determinants in stabilizing soil aggregate structure have been rarely clarified under the hydrological stress.
Yiguo Ran, Maohua Ma, Yan Liu, Kai Zhu, Xuemei Yi, Xiaoxiao Wang, Shengjun Wu, Ping Huang   +7 more
semanticscholar   +1 more source

Effect of soil aggregation on the biodegradation of phenanthrene aged in soil

Environmental Pollution, 2003
A study was conducted to determine the possible role of soil aggregates in the sequestration of phenanthrene and thus in the declined biodegradation of the hydrocarbon. Phenanthrene aged in Lima loam (2-mm aggregates) showed declined biodegradation with time of aging to the test bacterium P5-2 capable of using sorbed phenanthrene.
K, Nam, J Y, Kim, D I, Oh
openaire   +2 more sources

Chromium Diffusion and Reduction in Soil Aggregates

Environmental Science & Technology, 2001
The distribution of metal contaminants such as chromium in soils can be strongly localized by transport limitations and redox gradients within soil aggregates. Measurements of Cr(VI) diffusion and reduction to Cr(III) were obtained in soil columns representing transects into soil aggregates in order to quantify influences of organic carbon (OC) and ...
T K, Tokunaga, J, Wan, M K, Firestone, T C, Hazen, E, Schwartz, S R, Sutton, M, Newville   +6 more
openaire   +2 more sources

Dynamics of Soil Aggregation

1966
Publisher Summary This chapter discusses the factors and mechanisms governing the formation and destruction of water-stable soil aggregates. The formation and degradation of water-stable aggregates comprise a complex interrelationship of physical, biological, and chemical reactions.
R.F. Harris, G. Chesters, O.N. Allen
openaire   +1 more source

Direct and indirect linkages between soil aggregates and soil bacterial communities under tillage methods

Geoderma, 2019
Tillage methods affect soil aggregates and influence soil bacterial communities. However, the direct and indirect linkages between soil aggregates and soil bacterial communities are still not clear.
Hao Wang, Shulan Wang, Rui Wang, Yuan-Hong Zhang, Xiaoli Wang, Jun Li   +5 more
semanticscholar   +1 more source

Soil aggregation in the seedbed: A review. I. Properties of aggregates and beds of aggregates

Soil and Tillage Research, 1989
Tillage improves soil conditions for plant growth by altering the aggregate size distribution which affects the mechanical, physical and agronomic properties of the soil. Properties of individual aggregates and how these relate to seedbed performance are reviewed.
M.V. Braunack, A.R. Dexter
openaire   +1 more source

Soil Aggregation in Relation to Various Soil Constituents

Soil Science Society of America Journal, 1957
Abstract The relative importance of diverse factors affecting aggregation in four Wisconsin soil types was studied by multiple regression analyses. Single and combined effects of pH and contents of organic matter, microbial gum, clay, and free iron oxide were considered.
G. Chesters, O. J. Attoe, O. N. Allen
openaire   +1 more source

Responses of soil aggregates and bacterial communities to soil-Pb immobilization induced by biofertilizer.

Chemosphere, 2019
The objective of this study was to investigate how soil aggregates and bacterial communities responded to soil-lead (Pb) immobilization induced by biofertilizer. Wheat (Triticum spp.) was planted in Pb-polluted soil.
Meng Wang, Shibao Chen, Yun Han, Li Chen, Duo Wang   +4 more
semanticscholar   +1 more source