Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

The Nitrogen Cycle01:49

The Nitrogen Cycle

52.8K
Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...
52.8K
Overview of Nitrogen Metabolism01:20

Overview of Nitrogen Metabolism

8.1K
Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of  ammonia, ammonium ions, nitrate, nitrite, or  nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
8.1K
The Soil Ecosystem02:23

The Soil Ecosystem

20.4K
Plants obtain inorganic minerals and water from the soil, which acts as a natural medium for land plants. The composition and quality of soil depend not only on the chemical constituents but also on the presence of living organisms. In general, soils contain three major components:
20.4K
Inorganic Nitrogen Assimilation01:22

Inorganic Nitrogen Assimilation

48
Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme...
48
The Roles of Bacteria and Fungi in Plant Nutrition02:11

The Roles of Bacteria and Fungi in Plant Nutrition

36.1K
Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.
36.1K
The Carbon Cycle01:14

The Carbon Cycle

38.5K
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
38.5K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Postoperative outcomes of on- vs off-pump CABG in patients with HFrEF: a nationwide cohort study in Taiwan.

Annals of medicine·2026
Same author

Enhanced nuclear localization of small heterodimer partner in metabolic dysfunction-associated steatohepatitis.

JHEP reports : innovation in hepatology·2025
Same author

Dual stressors in freshwater ecosystems: A critical review of the independent and combined effects of pesticides and road salts on phytoplankton.

The Science of the total environment·2025
Same author

Diaphragmatic Ectopic Variceal Bleeding Secondary to Chronic Primary Idiopathic Budd-Chiari Syndrome.

Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association·2025
Same author

The association of coronary microvascular dysfunction and cardiac maladaptation with clinical outcomes in heart failure with preserved ejection fraction: A prospective dynamic SPECT study.

International journal of cardiology·2025
Same author

Clinical Relevancies of Sarcopenic Obesity in Patients with Metabolic Dysfunction-Associated Fatty Liver Disease (MASLD).

Digestive diseases and sciences·2025

Related Experiment Video

Updated: Jul 19, 2025

Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers
10:29

Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers

Published on: March 21, 2016

12.4K

Anthropogenic effects on global soil nitrogen pools.

Shih-Chieh Chien1, Jennifer Adams Krumins2

  • 1Doctoral Program in Environmental Science and Management, Montclair State University, Montclair, NJ, 07043, USA.

The Science of the Total Environment
|August 16, 2023
PubMed
Summary
This summary is machine-generated.

Soil nitrogen pools are influenced by land use. Agricultural soils release nitrogen, while urban soils store it, indicating complex human impacts on global nitrogen cycling.

Keywords:
Agricultural systemGlobal changeNitrogen cyclingSoilUrban system

More Related Videos

Microplot Design and Plant and Soil Sample Preparation for 15Nitrogen Analysis
08:44

Microplot Design and Plant and Soil Sample Preparation for 15Nitrogen Analysis

Published on: May 10, 2020

6.9K
Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.
07:32

Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.

Published on: June 4, 2021

5.2K

Related Experiment Videos

Last Updated: Jul 19, 2025

Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers
10:29

Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers

Published on: March 21, 2016

12.4K
Microplot Design and Plant and Soil Sample Preparation for 15Nitrogen Analysis
08:44

Microplot Design and Plant and Soil Sample Preparation for 15Nitrogen Analysis

Published on: May 10, 2020

6.9K
Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.
07:32

Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.

Published on: June 4, 2021

5.2K

Area of Science:

  • Environmental Science
  • Biogeochemistry
  • Soil Science

Background:

  • Soil nitrogen pools regulate critical biogeochemical cycles, impacting primary productivity, nitrogen pollution, and carbon budgets.
  • Understanding the global distribution of soil nitrogen and its drivers under human land use is crucial but remains unclear.

Approach:

  • A meta-analysis was conducted using global soil sampling data.
  • Soil total nitrogen pools and their driving mechanisms were compared across natural, agricultural, and urban land use classifications.

Key Points:

  • Nitrogen pool sizes can be similar across land uses, but the drivers differ significantly.
  • Drivers in agricultural and urban soils are more complex and less coupled to climate and soil factors than in natural soils.
  • Human activities likely play a significant co-moderating role in agricultural and urban soil nitrogen dynamics.

Conclusions:

  • Agricultural soils function as nitrogen sources, whereas urban soils act as nitrogen sinks.
  • This research enhances the understanding of anthropogenic nitrogen fate and distribution in diverse soil environments.