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The nutrients contained in soil organic matter are important for plant growth, bon levels in the atmosphere. a. How is soil carbon increased?

The nutrients contained in soil organic matter are important for plant growth, bon levels in the atmosphere. a. How is soil carbon increased?

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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I E ป Callane Earth SUPPLEMENTAL EXERCISES - ESCI 103L - Cuyahoga Community College 9. The nutrients contained in soil organic matter are important for plant growth, but also affect carbon levels in the atmosphere. a. How is soil carbon increased? b. How does soil act to decrease carbon levels in the atmosphere? Glossary Active organic matter.-Organic compounds used as food by micro-organisms and associated with high biological activity. Active soil organic matter breaks down faster than other components of soil organic matter and responds more quickly to changes in management. Fresh residue.-Plant residue, dead animals, and other organic substances that have recently been added to the soil and exhibit minimal decay. Humus (stable organic matter).-Complex organic compounds that remain after organisms have used and transformed the original organic material. Humus is not readily decomposed either because it is physically protected inside soil aggregates or it is chemically too complex to be used by most organisms. Humus is important in binding soil aggregates and improves the water and nutrient- holding capacity of soils. Mineralization.-Organic matter decomposition that releases nutrients in a form available for plants (e.g., phosphorus, nitrogen, and sulfur). Soil micro-organisms (small living organisms).-Bacteria, fungi, nematodes, protozoa, and arthropods, etc. Soil organic matter (SOM)-Organic component of soil, consisting of plant residue (fresh), living organisms, decomposing organic matter (active), and stable organic matter (humus). USDA is an equal opportunity provider and employer. SOIL QUALITY INDICATORS - RESPIRATION PORTION Glossary Ammonification-Production of ammonium (NH4) from the decomposition of SOM. Denitrification.-Anaerobic conversion and loss of nitrate nitrogen to nitrite and NO, N₂O, and N₂ gases. Mineralization.-Decomposition of organic matter that releases nutrients in a form available for plant use (e.g., phosphorus, nitrogen, and sulfur); occurs as a result of respiration. 18 24 25 28 Sun Alt Enorm 1 and 2 Sun Switch
Transcribed Image Text:I E ป Callane Earth SUPPLEMENTAL EXERCISES - ESCI 103L - Cuyahoga Community College 9. The nutrients contained in soil organic matter are important for plant growth, but also affect carbon levels in the atmosphere. a. How is soil carbon increased? b. How does soil act to decrease carbon levels in the atmosphere? Glossary Active organic matter.-Organic compounds used as food by micro-organisms and associated with high biological activity. Active soil organic matter breaks down faster than other components of soil organic matter and responds more quickly to changes in management. Fresh residue.-Plant residue, dead animals, and other organic substances that have recently been added to the soil and exhibit minimal decay. Humus (stable organic matter).-Complex organic compounds that remain after organisms have used and transformed the original organic material. Humus is not readily decomposed either because it is physically protected inside soil aggregates or it is chemically too complex to be used by most organisms. Humus is important in binding soil aggregates and improves the water and nutrient- holding capacity of soils. Mineralization.-Organic matter decomposition that releases nutrients in a form available for plants (e.g., phosphorus, nitrogen, and sulfur). Soil micro-organisms (small living organisms).-Bacteria, fungi, nematodes, protozoa, and arthropods, etc. Soil organic matter (SOM)-Organic component of soil, consisting of plant residue (fresh), living organisms, decomposing organic matter (active), and stable organic matter (humus). USDA is an equal opportunity provider and employer. SOIL QUALITY INDICATORS - RESPIRATION PORTION Glossary Ammonification-Production of ammonium (NH4) from the decomposition of SOM. Denitrification.-Anaerobic conversion and loss of nitrate nitrogen to nitrite and NO, N₂O, and N₂ gases. Mineralization.-Decomposition of organic matter that releases nutrients in a form available for plant use (e.g., phosphorus, nitrogen, and sulfur); occurs as a result of respiration. 18 24 25 28 Sun Alt Enorm 1 and 2 Sun Switch
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