SOIL-LANDSCAPE RELATIONSHIPS OF A CLIMAX FOREST IN THE ALLEGHENY HIGH PLATEAU, PENNSYLVANIA

被引:27
作者
AGUILAR, R [1 ]
ARNOLD, RW [1 ]
机构
[1] CORNELL UNIV,NEW YORK STATE COLL AGR & LIFE SCI,DEPT AGRON,ITHACA,NY 14853
关键词
EROSION; -; Monitoring; FORESTRY;
D O I
10.2136/sssaj1985.03615995004900030034x
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
The Tionesta Research Natural Area, located in the Allegheny National Forest of northwestern Pennsylvania, is a unique remnant of the old growth American beech (Fagus grandifolia L. )-Eastern hemlock (Tsuga canadensis L. ) forest that once covered over 2400 ha of the Allegheny Plateau. During a detailed soil survey, the soils occurring on the various landscapes in the area were characterized and the relationships between the vegetation and the soils were evaluated. The development of the landscapes in the Tionesta area has been strongly influenced by the contrasting erodibility of alternating layers of sandstone, siltstone, and shale bedrock. The gentle, regional dip of the bedrock in a southwesterly direction has favored the preferential erosion of the south-facing slopes. Seven distinct soils occur on the various landscapes. These soils are extremely acid to very strongly acid and high in exchangeable aluminum. Low cation exchange capacity and base saturation reflect the abundance of quartz and other primary minerals which are highly resistant to weathering. Refs.
引用
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页码:695 / 701
页数:7
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