Arid
DOI10.1007/s10661-006-9333-3
Nutrient export from watersheds on Mt. Desert Island, Maine, as a function of land use and fire history
Nielsen, Martha G.; Kahl, Jeffrey S.
通讯作者Nielsen, Martha G.
来源期刊ENVIRONMENTAL MONITORING AND ASSESSMENT
ISSN0167-6369
出版年2007
卷号126期号:1-3页码:81-96
英文摘要

A study of 13 small (less than 7.5 km(2)) watersheds on Mt. Desert Island, Maine, was conducted from January 1999 to September 2000 to determine nutrient export delivery to coastal waters around the island, and to determine whether a series of wildfires in 1947 have affected nutrient export in burned watersheds. Nutrient export (nitrate-nitrogen, total nitrogen, total phosphorus) was determined for each watershed during the study period, and was normalized by watershed area. The yield of nitrate-nitrogen (N) ranged from 10 to 140 kg/km(2)/year. Total N yield ranged from 42 to 250 kg/km(2)/year. Total phosphorus (P) yield ranged from 1.4 to 7.9 kg/km(2)/year. Watersheds entirely within Acadia National Park (lacking human land-based nutrient sources) exported significantly less total N and total P than watersheds that were partly or entirely outside the park boundary. Nitrate-N export was not significantly different in these two groups of watersheds, perhaps because atmospheric deposition is a dominant source of nitrate in the study area. No relation was observed between burn history and nutrient export. Any effect of burn history may be masked by other landscape-level factors related to nutrient export.


英文关键词Acadia National Park coastal watersheds fire effects land-use nitrogen export small watersheds
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000244335800007
WOS关键词NITROGEN ; REGRESSION ; LOADS
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
来源机构United States Geological Survey
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/154122
作者单位(1)US Geol Survey, Augusta, ME 04330 USA;(2)Univ Maine, Senator George J Mitchell Ctr Environm & Watershe, Orono, ME USA
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GB/T 7714
Nielsen, Martha G.,Kahl, Jeffrey S.. Nutrient export from watersheds on Mt. Desert Island, Maine, as a function of land use and fire history[J]. United States Geological Survey,2007,126(1-3):81-96.
APA Nielsen, Martha G.,&Kahl, Jeffrey S..(2007).Nutrient export from watersheds on Mt. Desert Island, Maine, as a function of land use and fire history.ENVIRONMENTAL MONITORING AND ASSESSMENT,126(1-3),81-96.
MLA Nielsen, Martha G.,et al."Nutrient export from watersheds on Mt. Desert Island, Maine, as a function of land use and fire history".ENVIRONMENTAL MONITORING AND ASSESSMENT 126.1-3(2007):81-96.
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