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首页> 外文学位 >Restoration of riparian buffer function in reclaimed surface mine soils in southern Illinois.
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Restoration of riparian buffer function in reclaimed surface mine soils in southern Illinois.

机译：恢复伊利诺伊州南部表层矿山土壤的河岸缓冲功能。

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摘要

Riparian buffers have been proven to reduce nutrient and sediment transport to streams in agricultural watersheds. Southern Illinois offers a unique opportunity to study functions of riparian buffers in reclaimed mine soils. In Perry County, Illinois three stream segments of Bonnie Creek, Galum Creek and Pipestone Creek were restored to their approximate original position following mining. Between 1980 and 2000, as part of the restoration, vegetative buffers of grasses and trees were planted along the streams to minimize nutrient and sediment inputs from adjacent restored agricultural land.;Our research objective was to determine whether riparian soil function was being restored in the vegetated buffers by comparing multiple soil properties to the adjacent reclaimed soils in agricultural production. Four transects were established on each study site through the buffer and agricultural field. Ten one meter plots were evenly spaced along each transect in each of the land uses. In summers 2010 and 2011, water infiltration rates, bulk density, total carbon concentration, total nitrogen concentration, and C:N ratio measurements were made to assess the restoration of soil function.;Soil water infiltration was significantly higher and bulk density was significantly lower in the riparian buffers compared to the adjacent agricultural fields. In the riparian buffer, roots likely helped to break up the soil adding pore space, which reduced the bulk density and increased the water infiltration rates. Soil total carbon, total nitrogen, and C:N ratio were significantly higher in the riparian buffers than the agricultural fields. The additional organic matter inputs from the roots of the riparian vegetation along with incorporation of litter from the soil macrofauna likely helped to increase the soil carbon and nitrogen levels compared to the agricultural fields. Even though the soil C:N ratio was significantly higher in the riparian buffers than the agricultural fields, more time is needed to restore the ratio to levels where nitrogen will be immobilized not mineralized in the riparian soils. Soil function in the riparian areas should continue to develop at a faster rate compared to the agricultural fields due to the impact of the perennial vegetation. Restoration of landscapes is not estimated by the return of structure alone, it also includes the re-establishment of function such as soil quality improvement, water quality improvement, and wildlife habitat restoration.
机译：河岸缓冲带已被证明可以减少养分和沉积物向农业流域中的水流的输送。伊利诺伊州南部地区提供了一个独特的机会来研究河岸缓冲带在矿山复垦土壤中的功能。在伊利诺伊州的佩里县，采矿后，邦妮溪，加鲁姆溪和派普斯通溪的三个溪流段已恢复到大约原始位置。在1980年至2000年之间，作为恢复的一部分，沿着河道种植了草木和树木的营养缓冲液，以最大程度减少相邻恢复耕地的养分和沉积物输入。我们的研究目标是确定河岸土壤功能是否得到恢复。通过将多种土壤性质与农业生产中相邻的开垦土壤进行比较，从而获得植被缓冲。通过缓冲带和农田在每个研究地点建立了四个样带。在每个土地利用中，每个样带沿每个样条均匀分布了十个一米的样地。在2010年和2011年夏季，进行了水渗透率，堆密度，总碳浓度，总氮浓度和C：N比的测量，以评估土壤功能的恢复。在河岸缓冲区与邻近的农业领域相比。在河岸缓冲带中，根可能有助于破坏土壤，增加孔隙空间，从而降低了堆积密度并增加了水的渗透率。河岸缓冲带的土壤总碳，总氮和碳氮比显着高于农田。与农田相比，来自河岸植被根部的额外有机物输入以及土壤大型动物粪便的掺入可能有助于增加土壤的碳和氮含量。尽管河岸缓冲带中土壤碳氮比明显高于农田，但仍需要更多时间才能将比率恢复到固氮状态，使氮不会在河岸土壤中矿化。由于多年生植被的影响，与农田相比，河岸地区的土壤功能应继续以更快的速度发展。景观恢复不仅是通过结构的回归来估计的，还包括土壤质量改善，水质改善和野生动植物栖息地恢复等功能的重建。

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  • 作者

    Rahe, Nathan.;

  • 作者单位

    Southern Illinois University at Carbondale.;

  • 授予单位 Southern Illinois University at Carbondale.;
  • 学科 Biology Conservation.;Environmental Sciences.;Agriculture Soil Science.
  • 学位 M.S.
  • 年度 2012
  • 页码 104 p.
  • 总页数 104
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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