DOI: 10.1016/j.foreco.2013.03.042
Scopus记录号: 2-s2.0-84876796653
论文题名: Atmospheric deposition of nitrogen and sulfur and preferential canopy consumption of nitrate in forests of the Pacific Northwest, USA
作者: Fenn M.E. ; Ross C.S. ; Schilling S.L. ; Baccus W.D. ; Larrabee M.A. ; Lofgren R.A.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 302 起始页码: 240
结束页码: 253
语种: 英语
英文关键词: Canopy uptake
; Ion exchange resin collectors
; Nitrogen deposition
; Pacific Northwest forests
; Passive monitoring
; Throughfall
Scopus关键词: Canopy uptake
; Nitrogen deposition
; Pacific Northwest
; Passive monitoring
; Throughfall
; Conservation
; Deposits
; Ion exchange resins
; Meteorological problems
; Nitrates
; Nitrogen
; Sulfur
; Forestry
; biological uptake
; cloud water
; dry deposition
; ion exchange
; monitoring system
; nitrate
; nitrogen
; resin
; sulfur
; throughfall
; wet deposition
; Deposition
; Forest Canopy
; Forest Management
; Ion Exchange
; Meteorology
; Nitrates
; Nitrogen
; Sulfur
; Synthetic Polymers
; USA
; Mount Rainier National Park
; North Cascades National Park
; Olympic National Park
; Pacific Northwest
; United States
; Washington [United States]
英文摘要: Wet, dry and throughfall deposition of N and S were measured for 2years in three national parks in Washington State: Olympic, Mount Rainier, and North Cascades. Throughfall was measured using ion exchange resin (IER) collectors. A major objective of the study was to evaluate the effectiveness of IER throughfall measurements for monitoring deposition inputs, including cloudwater deposition, to forest stands in national parks and other protected areas. Wet deposition (0.9-2.0kgNha-1yr-1) and throughfall (0.5-1.2kgNha-1yr-1) deposition of inorganic N in the three parks were relatively low. Wet deposition of sulfur (1.0-3.2kgha-1yr-1) was similar to wet deposition of inorganic nitrogen except at OLYM where wet deposition of S was higher than for N because of marine sources of SO4-S. Throughfall N deposition was lower than wet deposition of N because of strong preferential canopy consumption of nitrate (NO3-N), particularly during the wet winter periods. This phenomenon was previously reported for forests in this region, but its apparent near ubiquity in the region had not been recognized. Data on preferential canopy retention of NO3-N from wet-deposited N is shown for 38 stands in the Pacific Northwest of which 21 are newly-reported data. Deposition of NO3-N in throughfall at MORA and NOCA was reduced by 87% and 93% compared to wet deposition over the 2years. In contrast, wet deposition of NH4-N was generally increased by passage through the canopy. This strong preferential canopy retention of wet-deposited NO3-N limits the usefulness of throughfall measurements as a N deposition monitoring approach in forests of the Pacific Northwest region of North America and in some other regions with low to moderate N deposition. As a potential remedy to this limitation, a simple method is proposed for estimating total N deposition in the study sites based on S/N ratios in wet deposition and throughfall S deposition. © 2013. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66551
Appears in Collections: 影响、适应和脆弱性
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作者单位: USDA Forest Service, Pacific Southwest Research Station, 4955 Canyon Crest Drive, Riverside, CA 92507, United States; National Park Service, North Coast and Cascades Network, Olympic National Park, 600 E. Park Ave., Port Angeles, WA 98362, United States; National Park Service, North Coast and Cascades Network, North Cascades National Park Complex, 810 State Route 20, Sedro-Woolley, WA 98284, United States; National Park Service, North Coast and Cascades Network, Mount Rainier National Park, 55210 238th Ave. E., Ashford, WA 98304, United States
Recommended Citation:
Fenn M.E.,Ross C.S.,Schilling S.L.,et al. Atmospheric deposition of nitrogen and sulfur and preferential canopy consumption of nitrate in forests of the Pacific Northwest, USA[J]. Forest Ecology and Management,2013-01-01,302