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Related Concept Videos

The Soil Ecosystem02:23

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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:
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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...
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Overview of Nitrogen Metabolism01:20

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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.
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Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
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Related Experiment Video

Updated: Jun 30, 2025

Design and Operation of a Continuous 13C and 15N Labeling Chamber for Uniform or Differential, Metabolic and Structural, Plant Isotope Labeling
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Canopy nitrogen deposition enhances soil ecosystem multifunctionality in a temperate forest.

An Yang1,2, Dong Zhu3, Weixin Zhang1,2

  • 1Key Laboratory of Geospatial Technology for Middle and Lower Yellow River Regions, Ministry of Education, College of Geography and Environmental Science, Henan University, Kaifeng, China.

Global Change Biology
|March 19, 2024
PubMed
Summary

Nitrogen deposition impacts forest soil multifunctionality differently depending on application. Canopy nitrogen addition boosts soil ecosystem functions, while understory addition hinders them, highlighting varied microbial roles.

Keywords:
atmospheric nitrogen depositioncanopy nitrogen additionmicrobial diversityrare microbial taxasoil ecosystem multifunctionalityunderstory nitrogen addition

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Methods of Soil Resampling to Monitor Changes in the Chemical Concentrations of Forest Soils
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Area of Science:

  • Forest ecology
  • Soil science
  • Microbial ecology

Background:

  • Nitrogen (N) deposition is a significant environmental factor impacting ecosystem functions.
  • The effects of N deposition on soil ecosystem multifunctionality (SMF) in forests remain largely unknown.
  • Understanding these impacts is crucial for human health and ecosystem well-being.

Purpose of the Study:

  • To investigate the effects of simulated nitrogen deposition on soil ecosystem multifunctionality (SMF) in a temperate forest.
  • To explore the relationship between soil microbial diversity and SMF under different nitrogen addition scenarios.
  • To provide insights into sustainable forest management under increased nitrogen deposition.

Main Methods:

  • Long-term field experiment simulating nitrogen deposition through canopy and understory N addition.
  • Assessment of soil ecosystem multifunctionality (SMF).
  • Analysis of soil microbial diversity (fungal and bacterial) and its correlation with SMF.

Main Results:

  • Canopy nitrogen addition significantly promoted SMF expression.
  • Understory nitrogen addition suppressed SMF.
  • Fungal diversity regulated SMF under canopy N addition, while bacterial diversity regulated it under understory N addition.
  • Rare microbial taxa may play a critical role in maintaining SMF.

Conclusions:

  • Nitrogen deposition can enhance SMF in temperate forests, but the effect is dependent on the application method.
  • Canopy N addition benefits SMF by supporting fungal diversity, while understory N addition negatively impacts it via bacterial diversity shifts.
  • Considering canopy N processes is essential for accurate assessments of atmospheric N deposition effects and for informing conservation and management strategies.