ACCELERATED EROSION ON THE NORTH-CAROLINA COASTAL-PLAIN

被引：24

作者：

PHILLIPS, JD

WYRICK, M

ROBBINS, G

FLYNN, M

机构：

[1] Department of Geography, East Carolina University, Greenville, NC

来源：

PHYSICAL GEOGRAPHY | 1993年 / 14卷 / 02期

关键词：

ACCELERATED EROSION; SOIL PROFILE; GEOMORPHOLOGY; COASTAL PLAIN; NORTH-CAROLINA;

D O I：

10.1080/02723646.1993.10642471

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The Atlantic Coastal Plain of the United States has long been considered to have negligible soil erosion owing to low relief and permeable soils. Several recent studies point to a need for reassessment. Post-settlement erosion on the North Carolina Coastal Plain was estimated at the regional scale based on soil-profile truncation of a representative upland soil (Norfolk series). Apparent post-settlement soil-profile truncation ranges from 2.5 to 30 cm (mean 14.5 cm), implying a minimum regional average rate of 0.55 mm/yr since the region was settled in the 1700s. This amounts to a conservative estimated average rate of 9.3 t/ha/yr, a rate of the same general magnitude as estimated erosion rates in the North Carolina Piedmont, long recognized as a problem erosion area. Results imply accelerated water erosion despite the low slopes and permeable soils, and suggest the possibility of significant eolian erosion in the region. This rapid erosion in an area noted for its geological stability is a testament to the importance of vegetation cover and human agency in landscape evolution in the Coastal Plain.

引用

页码：114 / 130

页数：17

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