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Spatial Variability of Carbon Dioxide Emission by Soils in the Main Types of Forest Ecosystems at the Zvenigorod Biological Station of Moscow State University

机译:莫斯科州立大学Zvenigorod生物站森林生态系统主要类型的土壤空间变异性

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摘要

Carbon dioxide (CO~(2)) emission from the soil surface in forest biogeocenoses of the Zvenigorod Biological Station of Moscow State University in summer varies on average from 120 to 350 mg C–CO~(2)/(m_(2)h) and depends on the hydrothermal conditions (soil moisture and temperature) and the type of phytocenosis. The intensity of CO~(2)emission in the biogeocenosis does not depend on its parcel structure and varies with respect to plant microgroups: it is maximum in oxalis pine–spruce and maple–lime forests and bracken spruce–birch forests and minimum in areas of forest fall without vegetation. The upper (from 0 to 20 cm thick) soil layer provides up to 50% of the total soil CO~(2)emission. The role of microbial respiration in the total CO~(2)emission from soils is determined by weather conditions and varies from 9–33% in a dry summer to 55–75% in a summer with favorable temperature and moisture.
机译:夏季塞斯州立大学Zvenigorod生物站的森林生物常牙植物中的二氧化碳(Co〜(2))排放平均不同于120至350 mg C-Co〜(2)/(M_(2)H. )并取决于水热条件(土壤水分和温度)和植物沉积的类型。 生物凸癌症中的CO〜(2)发射的强度不依赖于其包裹结构,并相对于植物微粒而变化:它最多在Oxalis Pine-云杉和Maple-Lime森林和Bracken云杉 - 桦树林和最小区域 森林秋天没有植被。 上层(0至20cm厚)土壤层提供全部土壤共同CO〜(2)排放量的50%。 微生物呼吸在整个CO〜(2)排放中的作用是通过天气条件确定的,在夏季的干燥夏季的干燥夏季达到55-75%的9-33%,具有良好的温度和水分。

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