Results 11 to 20 of about 1,263,890 (294)

Context-dependent effects of grassland degradation on soil nitrogen cycling processes

open access: yesCommunications Earth & Environment
Grassland degradation, as a result of climate change and anthropogenic activities, is reported to impair soil nitrogen cycling processes. However, there is little evidence on the spatial patterns of the degradation effects across broad environmental ...
Shiting Yao   +7 more
doaj   +2 more sources

The impact of agricultural soil erosion on biogeochemical cycling [PDF]

open access: yes, 2010
Soils are the main terrestrial reservoir of nutrients, such as nitrogen and phosphorus, and of organic carbon. Synthesizing earlier studies, we find that the mobilization and deposition of agricultural soils can significantly alter nutrient and carbon ...
Bardgett, Richard D.   +3 more
core   +5 more sources

The Nitrogen Cycling Key Functional Genes and Related Microbial Bacterial Community α−Diversity Is Determined by Crop Rotation Plans in the Loess Plateau

open access: yesAgronomy, 2023
Soil nitrogen cycling microbial communities and functional gene α−diversity indicate soil nitrogen cycling ecological functions and potentials. Crop rotation plans affect soil nitrogen fractions and these indicators.
Rui Liu   +4 more
doaj   +1 more source

The nitrogen cycle [PDF]

open access: yesCurrent Biology, 2016
Nitrogen is the fourth most abundant element in cellular biomass, and it comprises the majority of Earth's atmosphere. The interchange between inert dinitrogen gas (N2) in the extant atmosphere and 'reactive nitrogen' (those nitrogen compounds that support, or are products of, cellular metabolism and growth) is entirely controlled by microbial ...
Stein, Lisa Y., Klotz, Martin G.
openaire   +2 more sources

The microbial nitrogen cycle [PDF]

open access: yesFrontiers in Microbiology, 2014
Nitrogen is an essential element in biological systems, and one that often limits production in both aquatic and terrestrial systems. Due to its requirement in biological macromolecules, its acquisition and cycling have the potential to structure microbial communities, as well as to control productivity on the ecosystem scale.
Ward, Bess B.   +1 more
openaire   +4 more sources

Compensatory Effects Between CO2, Nitrogen Deposition, and Nitrogen Fertilization in Terrestrial Biosphere Models Without Nitrogen Compromise Projections of the Future Terrestrial Carbon Sink

open access: yesGeophysical Research Letters, 2023
Although terrestrial biosphere models (TBMs) with and without nitrogen cycling successfully reproduce the historical terrestrial carbon sink, the influence of nitrogen cycling under interacting and intensifying global change drivers in the future is ...
S. Kou‐Giesbrecht, V. K. Arora
doaj   +1 more source

Nitrogen cycling in sheep [PDF]

open access: yesProceedings of the Nutrition Society, 1973
Introduction Many of the difficulties in predicting the response of ruminants to supplementation of low-protein diets with non-protein nitrogen (NPN) substances arise because there is a lack of information concerning the quantities of N that recycle between the tissues and the N pools in the digestive tract. Various aspects of N mctabolism in ruminants
J V, Nolan, B W, Norton, R A, Leng
openaire   +2 more sources

Sugarcane cultivation altered soil nitrogen cycling microbial processes and decreased nitrogen bioavailability in tropical Australia [PDF]

open access: yes, 2023
Purpose: Land use conversion of natural ecosystems to intensive agriculture can alter soil biogeochemical processes and nutrient cycling, while increasing potential for land degradation.
Esfandbod, Maryam   +10 more
core   +1 more source

Effect of Plastic Mulching on Soil Carbon and Nitrogen Cycling-Related Bacterial Community Structure and Function in a Dryland Spring Maize Field

open access: yesAgriculture, 2021
Plastic mulching, given its positive effects on temperature and water retention, has been widely used to solve water shortages and nutrient scarcity in rainfed agricultural soils.
Sen Wang   +4 more
doaj   +1 more source

Sediments nitrogen cycling influenced by submerged macrophytes growing in winter

open access: yesWater Science and Technology, 2021
Restoration of submerged macrophytes is one of the important measures for ecological treatment of eutrophic lakes. The changes in physical and chemical conditions caused by submerged macrophytes also affect the process of benthic nitrogen cycling.
Zhang Dan   +3 more
doaj   +1 more source

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