Efflux Estimate of Greenhouse Effect Gases in Three Different Forest Formations and the Influence of Soil
Efflux Estimate of Greenhouse Effect Gases in Three Different Forest Formations and the Influence of Soil作者机构：Department of Biochemical Engineering School of Chemistry Rio de Janeiro Federal University Rio de Janeiro 21949-900Brazil Department of Soils Institute of Agronomy Rio de Janeiro Federal Rural University Rio de Janeiro 21930-330 Brazil
出 版 物：《Journal of Environmental Science and Engineering(A)》 (环境科学与工程（A）)
年 卷 期：2014年第3卷第6期
页 面：305-311页
学科分类：12[管理学] 1204[管理学-公共管理] 0907[农学-林学] 090705[农学-野生动植物保护与利用] 08[工学] 09[农学] 0834[工学-风景园林学（可授工学、农学学位）]
主 题：Effiux estimate of greenhouse effect gases influence of soil and climate carbon global cycle.
摘 要：In carbon global cycle, the relationship between the terrestrial ecosystem and the atmosphere where there are, among others, gases that contribute to the greenhouse effect, has become object of relevant scientific interest. The content of organic matter in soil, expressed by its supplies as well as the organic matter degree of stability, are factors that can prevent the soil from acting as a drain and at the same time contribute for it to become a source of those gases. The variations in the way land is used in Brazil are factors responsible for the increase in emission of greenhouse effect gases. Based on these facts, this study was aimed to evaluate the CO2 and CH4 efflux using a gas retention chamber, and to associate these emissions to the organic carbon content in the soil. Two different areas were selected for the study, one in Tijuca Forest National Park, in a forest area, and the other at the Rio de Janeiro Federal Rural University campus. In the latter, the area was stratified in three sub areas according to the vegetation, use and water saturation degree. Samplings were performed during 8 months between 2013 and 2014.
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