Spatial variability of CO2 fluxes from meadow and forest soils in western part of Wzniesienia Łódzkie (Łódź Hills)

Q4 Agricultural and Biological Sciences
K. T. Wroński
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引用次数: 3

Abstract

Abstract For this study, the rate of soil respiration was estimated based on monthly measurements of 20 research points representing different types of plant communities. Meadows were found to have the highest rates of soil respiration, whereas rates measured in forests were lower. However, the seasonality of leaf and pine needle decomposition caused large variation in the CO2 fluxes from forest soils. Furthermore, the carbon content at both, the soil surface and 5 cm below ground, affected spatial differentiation of soil respiration in summer and autumn, while the carbon content at 5 cm below ground also affects the spatial variability of annual CO2 fluxes from the soil. Amazingly, however, results of research indicate that the carbon content throughout the whole humus layer does not impact soil respiration. It was also observed that changes in relief affected rates of soil respiration due to differences in sunlight exposure and the history of land use, which can markedly reduce the impact of the carbon content at 5 cm below ground on soil respiration.
Wzniesienia西部草甸和森林土壤CO2通量的空间变异性Łódzkie (Łódź Hills)
摘要/ Abstract摘要:本研究基于代表不同类型植物群落的20个研究点的月度测量数据,估算了土壤呼吸速率。草甸土壤呼吸速率最高,而森林土壤呼吸速率较低。然而,叶片和松针分解的季节性导致了森林土壤CO2通量的较大变化。此外,夏季和秋季土壤呼吸的空间分异均受地表和地下5 cm碳含量的影响,而地下5 cm碳含量也会影响土壤年CO2通量的空间变异。然而,令人惊讶的是,研究结果表明,整个腐殖质层的碳含量并不影响土壤呼吸。由于日照和土地利用历史的差异,地形变化影响了土壤呼吸速率,从而显著降低了5 cm以下土壤碳含量对土壤呼吸的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
USDA Forest Service - Research Papers PNW-RP
USDA Forest Service - Research Papers PNW-RP Agricultural and Biological Sciences-Forestry
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