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首页> 外文学位 >Vegetation development on iron mine tailings in northern New York.
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Vegetation development on iron mine tailings in northern New York.

机译：纽约北部铁矿尾矿上的植被开发。

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摘要

Vegetation development on iron mine tailings in northern New York was investigated. Chaumont and South Tailings were harsh environments for plant establishment and growth characterized by acidic substrate (pH 4.62-6.65), poor cation exchange capacity (CEC 1.75-1.43 me/100g), and very low concentrations of silt and clay (%si+cl 6.7-9.4), organic matter (OM 0.12-0.24%), and major nutrients (N 0.54-0.60%, P 17.0-25.9 ppm, K 0.02-0.03 me/100g). Meanwhile the Wetland Area substate showed the properties of pH 4.7, CEC 4.74 me/100g, %(si+cl) 44.6%, OM 0.67%, N 2.08%, P 111 ppm, and K 0.18 me/100g.;Artificial establishment of switch grass (Panicum virgatum) aided the natural invasion of indigenous tree and shrub saplings.;Plant community development on Chaumont and South Tailings may be summarized as follows: (1) establishment of P. grandidentata, P. tremuloids, Salix spp., and B. populifolia following the switch grass establishment, (2) gradually increased dominance of Populus spp. and (3) late invasion of Prunus pensylvanica. The early invasion of Populus, Salix, and Betula was most likely due to their effective seed dispersal, whereas the late arrival of Prunus pensylvanica was due to heavy seeds. Vigorous root sprouting ability of Populus spp. accounts for increased dominance of Populus.;The vegetation development in the Wetland Area can be summarized as follows: (1) initial establishment of Populus grandidentata, P. tremuloides, Salix spp., and Betula populifolia, (2) increased dominance of Salix spp. and Betula populifolia on silty substrate or increase of P. granidentata and P. tremuloides on sandy/loamy substrate, (3) late invasion of Vaccinium spp. with few scattered stems of Abies balsamea and Picea spp. under the canopy of Populus spp. and Betula populifolia, Abies balsamea and Picea spp. would dominate the area eventually. Effective seed dispersals as well as proximity to seed sources of Populus, Salix, and Betula accounted for their early invasion.;Stepwise multiple regressions revealed that K was the most consistent predictor of vegetation of Chaumont Tailings whereas N was the only consistent predictor of vegetation of South Tailings. However, no element can be excluded definitively from the elucidation of soil-vegetation relationships. (Abstract shortened with permission of author.).
机译：研究了纽约北部铁矿尾矿的植被发育。肖蒙和南尾矿是植物生长和生长的恶劣环境，其特征在于酸性底物（pH 4.62-6.65），较差的阳离子交换能力（CEC 1.75-1.43 me / 100g）和非常低的淤泥和粘土浓度（％si + cl 6.7-9.4），有机质（OM 0.12-0.24％）和主要营养素（N 0.54-0.60％，P 17.0-25.9 ppm，K 0.02-0.03 me / 100g）。同时，湿地亚状态显示pH 4.7，CEC 4.74 me / 100g，％（si + cl）44.6％，OM 0.67％，N 2.08％，P 111 ppm和K 0.18 me / 100g的性质。切换草（Panicum virgatum）有助于土著树木和灌木树苗的自然入侵。；肖蒙山和南尾矿的植物群落发展可总结如下：（1）建立P. grandidentata，P。tremuloids，Salix spp。和B. populifolia在转换草建立之后，（2）逐渐增加了胡杨属的优势地位。 （3）晚熟李。杨，柳和桦的早期入侵很可能是由于它们的有效种子传播，而李子李木迟到是由于种子重。杨树有较强的发芽能力。湿地地区的植被发育可归纳为：（1）初步建立了大叶杨，白僵菌，柳树和白桦；（2）柳树的优势增加。 。粉质基质上的桦木和桦木，或沙质/壤土基质上的P. granidentata和P. tremuloides的增加，（3）越橘的入侵较晚。几乎没有法国冷杉和云杉属的散生茎。在胡杨树冠下。和桦木，冷杉冷杉和云杉属。最终将主导该地区。有效的种子散布以及与杨，柳和桦的种子来源的接近性是其早期入侵的原因；逐步多元回归分析表明，K是乔蒙尾矿植被的最一致预测因子，而N是乔木尾矿植被的唯一一致预测因子。南尾矿。但是，没有任何元素可以明确地排除在土壤与植被之间的关系中。 （摘要经作者许可缩短。）。

著录项

  • 作者

    Choi, Young Dong.;

  • 作者单位

    State University of New York College of Environmental Science and Forestry.;

  • 授予单位 State University of New York College of Environmental Science and Forestry.;
  • 学科 Biology Ecology.;Biology Botany.;Engineering Mining.
  • 学位 Ph.D.
  • 年度 1991
  • 页码 239 p.
  • 总页数 239
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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