KohlenstoffkreislaufTheorie

Kohlenstoffkreislauf refers to the biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth. It is one of the most important biogeochemical cycles, as carbon is essential for life. The carbon cycle consists of several interconnected processes that move carbon from one reservoir to another.

Atmospheric carbon dioxide is a significant component of the carbon cycle. Plants absorb carbon dioxide from the atmosphere through photosynthesis, converting it into organic compounds. When plants and animals respire, they release carbon dioxide back into the atmosphere. Decomposition of dead organic matter also releases carbon dioxide.

Oceans play a crucial role in the carbon cycle, acting as a major sink for atmospheric carbon dioxide. Marine organisms, such as phytoplankton, absorb carbon dioxide during photosynthesis. When these organisms die, their carbon can be incorporated into sediments on the ocean floor.

Geological processes, such as volcanic activity and the weathering of rocks, also contribute to the carbon cycle. Over geological timescales, carbon is stored in rocks and fossil fuels. The burning of fossil fuels by humans releases large amounts of carbon dioxide into the atmosphere, leading to changes in the Earth's climate.

Human activities have significantly impacted the natural carbon cycle, primarily through the burning of fossil fuels, deforestation, and changes in land use. These activities have led to an increase in atmospheric carbon dioxide concentrations, contributing to global warming and climate change. Understanding the carbon cycle is essential for addressing these environmental challenges.