accelerating anthropogenic land surface change and the status of pleistocene drumlins in new england人为加速地表变化和更新世冰丘在新英格兰的状态.pdfVIP
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accelerating anthropogenic land surface change and the status of pleistocene drumlins in new england人为加速地表变化和更新世冰丘在新英格兰的状态
Accelerating Anthropogenic Land Surface Change and
the Status of Pleistocene Drumlins in New England
1 2 2¤
Deborah W. Woodcock *, John S. Rogan , Samuel D. Blanchard
1 Marsh Institute, Clark University, Worcester, Massachusetts, United States of America, 2 Clark School of Geography, Clark University, Worcester, Massachusetts, United
States of America
Abstract
Drumlins are glacially derived landforms that are prominent in the landscape over much of southern New England. We
carried out a comprehensive ground-based survey in a three-town study area in eastern Massachusetts with the goals of
establishing the extent to drumlins have been altered and assessing the associated environmental consequences and
probable driving factors. Results show that many drumlins have been significantly altered through levelling and truncation
(creation of steep cut and fill slopes), with projects involving movement of 121.56106 m3 of earth materials not now
uncommon. Stormwater and wetlands infractions were documented at all the larger excavation sites and resulted in
enforcement actions and fines in many cases; the broader environmental consequences of the loss/alteration of these
forested uplands are harder to establish. The excavations are significant in terms of materials cycling: the movement of
earth materials, when considered regionally, greatly exceeds natural denudation processes and is also greater than during
other periods of high anthropogenic denudation. Our findings suggest that the region’s glacial landscapes are at risk given
current development patterns. The accelerating rate of land-surface change is undoubtedly also generalizable to other fast-
developing regions of the United States.
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