Results 71 to 80 of about 7,278 (259)

Temporal and Spatial Patterns of Wind Erosion Climate Indices and Their Responses to Atmospheric and Oceanic Circulation Patterns in the Chinese Mollisol Region over the Past 61 Years

open access: yesShuitu Baochi Xuebao
[Objective] A study on the spatial and temporal patterns of wind erosion climate indices and their responses to atmospheric and oceanic circulation patterns in the Chinese Mollisol region is of great significance for the early warning and prevention of ...
HU Wentao   +6 more
doaj   +1 more source

Phosphorus Management on ‘Extensive' Organic Farms with Infertile Soils [PDF]

open access: yes, 2007
Two case-study farms with negative P balances maintained acceptable productivity without fertilisers, apparently by ‘mining’ ‘available’ P reserves in surface and subsoil.
Cornish, P. S.
core  

Le pingo d’Aishihik, sud-ouest du Yukon : caractères morphogénétiques et cadre temporel [PDF]

open access: yes, 1985
Les nouvelles observations sur la structure externe et interne de la butte d'Aishihik confirment qu'on se trouve en présence d'un pingo, classiquement interprété comme étant de système fermé, alors qu'il se situe à la limite sud du pergélisol discontinu.
Dewez, Véronique, Geurts, Marie-Anne
core   +1 more source

Dominant Species Drive Biomass and Diversity Responses to Nutrient Inputs

open access: yesEcology and Evolution, Volume 16, Issue 2, February 2026.
In a mesic grassland co‐limited by nitrogen and phosphorus, responses in plant community diversity and particularly of dominant species do not always correspond to responses in aboveground net primary productivity and functional group biomass production.
Philip A. Fay   +5 more
wiley   +1 more source

Community‐based long‐term management to address reinvasion of restored grassland vernal wetlands

open access: yesEcosphere, Volume 17, Issue 2, February 2026.
Abstract Exotic annual grasses can dominate ecosystems by producing a thick layer of dead plant litter, hereafter “thatch,” which promotes the regeneration of exotic grasses and inhibits native plants. Vernal pool wetlands within a grassland matrix are threatened by these exotic annual grasses, meriting the need for long‐term management.
Joanna Tang, Carla D'Antonio
wiley   +1 more source

Extraction Kinetics and Molecular Size Fractionation of Humic Substances From Two Brazilian Soils

open access: yesJournal of the Brazilian Chemical Society, 1999
In the present study, the extraction behaviour of humic substances (HS) from an Oxisol and a Mollisol from South Brazil, by using 0.1 and 0.5 mol L-1 NaOH and 0.15 mol L-1 neutral pyrophosphate solutions, respectively, was systematically studied.
Dick Deborah Pinheiro, Burba Peter
doaj  

Soil Organic Matter Stabilization by Polyvalent Cations in a Buried Alkaline Soil

open access: yesJournal of Geophysical Research: Biogeosciences, Volume 131, Issue 2, February 2026.
Abstract Buried paleosols can store large quantities of organic carbon (C), much of which persists for millennia due to isolation from surface processes that promote decomposition. Subsoil organic matter (SOM) persistence is often enhanced by mineral associations and ionic conditions—particularly high clay content and polyvalent cations—that limit ...
Manisha Dolui   +11 more
wiley   +1 more source

Soil respiration induces co-emission of greenhouse gases and methylated selenium from cold-region Mollisols: Significance for selenium deficiency

open access: yesEnvironment International
Mollisols rich in natural organic matter are a significant sink of carbon (C) and selenium (Se). Climate warming and agricultural expansion to the cold Mollisol regions may enhance soil respiration and biogeochemical cycles, posing a growing risk of soil
Kunfu Pi   +6 more
doaj   +1 more source

Large Area Crop Inventory Experiment (LACIE). Intensive test site assessment report [PDF]

open access: yes
There are no author-identified significant results in this ...
Daley, W. J.   +5 more
core   +1 more source

Balances de elementos en un agroecosistema de caña de azúcar: II. Balance de Fósforo [PDF]

open access: yes, 2006
The paper considers the application of the studies of nutrient cycling on the determination of phosphorus requirements in sugarcane plantations. The work was performed in a 4.5 ha experimental plot located in the valley of Yaracuy river in central ...
López-Hernández, D.   +2 more
core  

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