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Related Concept Videos

The Carbon Cycle01:14

The Carbon Cycle

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.
Microbes and the Carbon Cycle01:24

Microbes and the Carbon Cycle

The carbon cycle is a fundamental Earth process involving the transfer of carbon among the biosphere, lithosphere, atmosphere, and hydrosphere. It plays a critical role in regulating the planet’s climate and supporting life by cycling carbon through various chemical forms and reservoirs. Carbon primarily circulates as carbon dioxide (CO₂), representing its oxidized form, while reduced forms such as methane (CH₄) and organic compounds also play essential roles.Microbial activity is central to...
Carbon-dioxide Fixation01:28

Carbon-dioxide Fixation

Carbon dioxide fixation in prokaryotes enables the assimilation of inorganic carbon into organic molecules, supporting biosynthetic pathways, sustaining ecosystems, and contributing to the global carbon cycle. It also has industrial applications in carbon capture and bioproduct synthesis. Autotrophic organisms rely on this process to utilize CO₂ as a carbon source in diverse environments.The Calvin CycleThe Calvin cycle is the most widespread carbon fixation mechanism, primarily used by...
What are Biogeochemical Cycles?00:54

What are Biogeochemical Cycles?

The most common elements in organic molecules, carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus, are only available in the ecosystem in limited amounts. Therefore, these nutrients must be recycled through both biotic and abiotic components of the ecosystem, in processes generally called biogeochemical cycles.
The Nitrogen Cycle01:49

The Nitrogen Cycle

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...
The Calvin Benson Cycle01:46

The Calvin Benson Cycle

Ribulose 1,5- bisphosphate carboxylase/oxygenase (RuBisCo) is a critical enzyme that catalyzes carbon dioxide assimilation during photosynthesis. However, it is an inefficient enzyme, having an extremely slow catalytic rate. A typical enzyme can process about a thousand molecules per second; however, RuBisCo fixes only around three-carbon dioxides per second. Photosynthetic cells compensate for this slow rate by synthesizing very high amounts of RuBisCo, making it the most abundant single...

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Measurements of CO2 Fluxes at Non-Ideal Eddy Covariance Sites
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Measurements of CO2 Fluxes at Non-Ideal Eddy Covariance Sites

Published on: June 24, 2019

[Forest carbon cycle model: a review].

Ping Wang1

  • 1College of Forestry, Northeast Forestry University, Harbin 150040, China. hkswp2003@yahoo.com.cn

Ying Yong Sheng Tai Xue Bao = the Journal of Applied Ecology
|October 3, 2009
PubMed
Summary
This summary is machine-generated.

This study reviews forest carbon cycle models, classifying them into patch and regional scales. It discusses their features and future trends in China for better carbon flux estimation.

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Area of Science:

  • Ecology
  • Environmental Science
  • Forestry

Context:

  • The forest carbon cycle is crucial for understanding terrestrial carbon dynamics.
  • Carbon cycle models are essential tools for studying forest ecosystem mechanisms and estimating carbon fluxes.

Purpose:

  • To classify and comment on the features of main forest carbon cycle models.
  • To discuss the future development trends of forest carbon cycle models in China.

Summary:

  • This paper categorizes forest carbon cycle models into two main types: patch-scale and regional-scale terrestrial models.
  • The features of each model category are analyzed.
  • Future research directions for forest carbon cycle models in China are explored.

Impact:

  • Provides a structured overview of forest carbon cycle modeling approaches.
  • Informs future research and model development for accurate carbon flux estimation in China.
  • Contributes to a better understanding of forest ecosystem carbon dynamics.