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首页> 外文期刊>Forest Ecology and Management >Long-term effects in vegetation and soils at two 19th century iron furnace sites in southeastern Ohio, USA.
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Long-term effects in vegetation and soils at two 19th century iron furnace sites in southeastern Ohio, USA.

机译：美国俄亥俄州东南部两个19世纪的铁炉站点对植被和土壤的长期影响。

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摘要

Deciduous forests are regenerating following industrial disturbance in large areas of eastern North America and western Europe. To understand the long-term process of forest regeneration, the microenvironment and flora of post-industrial plots were compared with non-industrial controls at two 19th century iron furnace sites in southeastern Ohio, USA. Post-industrial plots had a shrub and canopy structure similar to controls, and showed comparable litter cover, soil organic content, and bulk density. Post-industrial and control plots remained clearly distinguishable in soil moisture, pH, and cation concentrations, however, consistent with leaching from industrial waste. Post-industrial areas were dominated by shade-tolerant plant species typical of long-established second-growth forest in the region, suggesting functional suitability of the industrial soils and an abundance of potential colonists. Open-habitat species persisted in post-industrial plots, showing a significantly higher richness and abundance than control plots. Annual growth increments showed later establishment of canopy tree species in the post-industrial plots, suggesting that the presence of open-habitat species reflected delayed canopy closure in the post-industrial area. Slag, clinker, iron-ore, and terrace microsites consistently differed in species composition within the post-industrial areas despite their relatively small size and close proximity. Thus, industrial effects appear to be perpetuated by long-term persistence of species distributions and hitherto unsuspected sensitivity to physical and chemical gradients. Forest composition and spatial structure retain a distinctive industrial character even 120 years after abandonment.
机译：在北美东部和西欧的大部分地区，由于工业扰动，落叶林正在再生。为了了解森林再生的长期过程，在美国俄亥俄州东南部的两个19世纪的铁炉站点中，将后工业区的微环境和植物区系与非工业区进行了比较。工业化后的土地具有类似于对照的灌木和冠层结构，并显示出可比的垫料覆盖率，土壤有机物含量和堆积密度。工业后和控制区的土壤水分，pH和阳离子浓度仍然清晰可辨，但是与工业废物的浸出一致。工业化后的地区主要是该地区历史悠久的次生林中典型的耐荫植物物种，这表明工业土壤的功能适合性和大量潜在的殖民者。开放栖息地物种在工业化后的土地上仍然存在，其丰富度和丰度明显高于对照土地。年增长量表明在工业化后地块中冠层树种的建立较晚，这表明开放式栖息地物种的存在反映了工业化后区域中冠层关闭的延迟。炉渣，熟料，铁矿石和梯田微场所尽管规模较小且相距较近，但在后工业区内的物种组成始终存在差异。因此，工业效应似乎因物种分布的长期持续存在以及迄今对物理和化学梯度的前所未有的敏感性而得以延续。废弃后120年，森林的构成和空间结构仍保留着鲜明的工业特征。

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