Topoedaphic unit analysis: A site classification system for reclaimed mined lands

土地复垦 底土 植被(病理学) 表土 环境科学 水文学(农业) 主成分分析 植被恢复 采样(信号处理) 土地覆盖 地质学 土壤科学 土地利用 土壤水分 地理 数学 岩土工程 考古 计算机科学 统计 工程类 土木工程 滤波器(信号处理) 医学 病理 计算机视觉
作者
Kelly Krabbenhoft,Don Kirby,Mario E. Biondini,G. A. Halvorson,D. J. Nilson
出处
期刊:Catena [Elsevier BV]
卷期号:20 (3): 289-301 被引量:7
标识
DOI:10.1016/0341-8162(93)90006-b
摘要

Evaluating the success of mined land reclamation is made difficult by the multiformity of environmental conditions present following reclamation. Defining topoedaphic units for reclaimed mined land should make future evaluations rapid and accurate. In this study, properties measured were soil physical (topsoil and subsoil depth, texture, saturation percentage) and chemical (SAR, EC, pH, Ca, Na, Mg) characteristics, and topographic considerations (aspect, slope position). To define topoedaphic units we developed the following method. Principal component analysis followed by cluster and discriminant analysis were used to define topoedaphic units. Vegetation cover was then sampled within units. The aim was to establish whether vegetation properties were significantly different among topoedaphic units. When vegetation properties would not fully discriminate among topoedaphic units, topoedaphic units were redefined. The method was tested at the Glenharold Mine in North Dakota, USA. Two topoedaphic units were identified: Unit 1 restricted to upper slope positions and Unit 2 more mesic downslope positions. Topoedaphic units, defined by soil and topographic properties, were also different in terms of plant communities defined by live basal cover. We conclude that topoedaphic unit analysis or stratified sampling of topographic positions would be a more objective analysis of reclamation success.

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