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Long-term dynamics of terrestrial carbon stocks in Austria: a comprehensive assessment of the time period from 1830 to 2000

机译:奥地利陆地碳储量的长期动态:对1830年至2000年这段时间的全面评估

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This article presents a comprehensive data set on Austria's terrestrial carbon stocks from the beginnings of industrialization in the year 1830 to the present. It is based on extensive historical and recent land use and forestry data derived from primary sources (cadastral surveys) for the early nineteenth century, official statistics available for later parts of the nineteenth century as well as the twentieth century, and forest inventory data covering the second half of the twentieth century. Total carbon stocks—i.e. aboveground and belowground standing crop and soil organic carbon—are calculated for the entire period and compared to those of potential vegetation. Results suggest that carbon stocks were roughly constant from 1830 to 1880 and have grown considerably from 1880 to 2000, implying that Austria's vegetation has acted as a carbon sink since the late nineteenth century. Carbon stocks increased by 20% from approximately 1.0 GtC in 1830 and 1880 to approximately 1.2 GtC in the year 2000, a value still much lower than the amount of carbon terrestrial ecosystems are expected to contain in the absence of land use: According to calculations presented in this article, potential vegetation would contain some 2.0 GtC or 162% of the present terrestrial carbon stock, suggesting that the recent carbon sink results from a recovery of biota from intensive use in the past. These findings are in line with the forest transition hypothesis which claims that forest areas are growing in industrialized countries. Growth in forest area and rising carbon stocks per unit area of forests both contribute to the carbon sink. We discuss the hypothesis that the carbon sink is mainly caused by the shift from area-dependent energy sources (biomass) in agrarian societies to the largely area-independent energy system of industrial societies based above all on fossil fuels.
机译:本文介绍了从1830年工业化开始到现在的奥地利陆地碳储量的综合数据。它基于19世纪初期从主要来源(地籍调查)获得的广泛的历史和近期土地利用和林业数据,19世纪后期和20世纪可用的官方统计数据以及涵盖二十世纪下半叶。碳总存量,即计算了整个时期的地上和地下站立的作物和土壤有机碳,并将其与潜在的植被进行比较。结果表明,从1830年到1880年,碳储量大致保持不变,并且从1880年到2000年,碳储量已大大增加,这意味着自19世纪末以来,奥地利的植被一直起着碳汇的作用。碳储量从1830年和1880年的约1.0 GtC增加到2000年的约1.2 GtC,增长了20%,该值仍远低于在没有土地利用的情况下预计的陆地碳生态系统数量:在本文中,潜在的植被将包含约2.0 GtC或当前陆地碳储量的162%,这表明最近的碳汇是由于过去大量使用生物群而产生的。这些发现与森林转型假说相符,森林假说声称工业化国家的森林面积正在增长。森林面积的增长和森林每单位面积碳储量的增加都有助于碳汇。我们讨论的假说是,碳汇主要是由农业社会中依赖于区域的能源(生物质)向首先基于化石燃料的工业社会中与区域无关的能源系统转变造成的。

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