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首页> 外文期刊>Journal of the American Water Resources Association >Restoration of Riparian Buffer Function in Reclaimed Surface Mine Soils
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Restoration of Riparian Buffer Function in Reclaimed Surface Mine Soils

机译：复垦地表土壤中河岸缓冲功能的恢复

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Ecosystem processes such as water infiltration and denitrification largely determine how riparian buffers function to protect surface water quality. Reclaimed mine areas offer a unique opportunity to study the restoration of riparian function without the confounding influence of past land use. Between 1980 and 2000 in southern Illinois, agricultural fields with forest buffers were established along three restored stream reaches in reclaimed mine land. Our research objective was to compare common indicators of soil quality (infiltration, soil C and N, bulk density, and soil moisture) between forest and cultivated riparian zones to determine if riparian function was being restored. Soil bulk density was significantly lower in the forest buffers compared to the agricultural fields. The forest buffers had greater soil total C, total N, and moisture levels than agricultural fields likely due to greater organic matter inputs. Soil total C and N levels in forest buffers were positively related to age of restoration, indicating soil quality is gradually being restored in the buffers. Restoration success of riparian buffers should not be estimated by the return of structure alone; it also includes reestablishment of functions such as nutrient cycling and water retention that largely determine water quality benefits. Watershed planning efforts can expect a lag time on the order of decades between riparian restoration activities and surface water quality improvement.
机译：水渗透和反硝化等生态系统过程在很大程度上决定了河岸缓冲带如何起到保护地表水水质的作用。开垦的矿区为研究河岸功能的恢复提供了独特的机会，而不会受到过去土地使用的混杂影响。从1980年到2000年，在伊利诺伊州南部，在开垦的矿区中，沿着三个恢复的河段建立了具有森林缓冲区的农田。我们的研究目的是比较森林和耕作的河岸带地区之间土壤质量的常用指标（渗透，土壤碳和氮，容重和土壤湿度），以确定河岸功能是否得到恢复。与农田相比，森林缓冲区的土壤容重明显较低。森林缓冲区的土壤总碳，总氮和水分含量高于农田，这可能是由于有机物质输入增加所致。森林缓冲区的土壤总碳和氮水平与恢复年龄呈正相关，表明缓冲区的土壤质量正在逐步恢复。河岸缓冲带的恢复成功不应仅通过结构的返回来估计。它还包括重新建立诸如养分循环和保水等功能，这些功能在很大程度上决定了水质的益处。流域规划工作可以预期，河岸恢复活动与地表水质量改善之间将有数十年的延迟时间。

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