DOI: 10.1016/j.atmosenv.2019.117207
论文题名: Agricultural sources as major supplies of atmospheric phosphorus to Lake Kinneret
作者: Gross A. ; Reichmann O. ; Zarka A. ; Weiner T. ; Be'eri-Shlevin Y. ; Angert A.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 224 语种: 英语
英文关键词: Agriculture
; Coal combustion
; Coal dust
; Composting
; Deposition
; Dust
; Eutrophication
; Isotopes
; Land use
; Manures
; Meteorological problems
; Phosphate fertilizers
; Phosphorus
; Soil pollution
; Soils
; Water
; Wind
; Agricultural land
; Agricultural soils
; Agricultural sources
; Anthropogenic disturbance
; Atmospheric depositions
; Phosphate oxygen
; Simultaneous measurement
; Uncultivated soil
; Lakes
; fresh water
; lake water
; oxygen
; phosphate
; phosphate fertilizer
; phosphorus
; anthropogenic effect
; atmospheric deposition
; coal combustion
; dust
; lake water
; oxygen isotope
; phosphorus
; pollutant source
; seasonal variation
; wind velocity
; agricultural land
; air sampling
; atmospheric deposition
; cattle manure
; compost
; cow
; dust
; eutrophication
; Israel
; lake
; lake basin
; land use
; livestock
; pastureland
; priority journal
; soil
; summer
; Israel
; Northern District
; Sea of Galilee
学科: Atmospheric deposition
; Dust
; Phosphate oxygen isotopes
; Phosphorus
中文摘要: Phosphorus (P) deposition through the atmosphere to fresh water bodies is a major supply pathway and, in some cases, can accelerate eutrophication processes. However, the quantification of atmospheric P fluxes to lakes is often not well established and the major P sources are generally poorly recognized. Here we present measurements of the atmospheric P deposition flux of two consecutive years in two sampling stations around Lake Kinneret, a large fresh water body in Northern Israel and quantified the dust daily P load emitted from 14 potential source sites upwind to the lake that include agricultural soils, pasture lands, livestock feeding zone sites and uncultivated lands. In addition, we analyzed phosphate oxygen isotopes (δ18OP) in the deposited dust and in surface material from potential P sources around the lake such as cultivated and uncultivated soils, cow manure and compost. The mean daily dust P deposition to the lake ranged from 150 to 770 μg P m−2 day−1, which accounts for ca. 5%–35% of the P concentrations in the lake water during summer. Dust deposition showed strong daily and monthly variations that were not associated with wind speed alone, indicating that local anthropogenic disturbances have a major control over the daily dust P flux. Simultaneous measurements of atmospheric P in different locations upwind to Lake Kinneret shows that the bulk of the P originated from sources in close proximity to the lake, with negligible P transported from distal sources. Quantification of the atmospheric P load emitted from potential sources upwind to the lake indicate that the highest daily loads of P are emitted from livestock feeding zone sites, probably because of a continuous accumulation of P in these soils. δ18OP values (ranging from 19.1‰ to 24.8‰) in deposited dust samples were significantly different than the values reported for natural soils, coal combustion and airborne tree pollen but in the in the same range as the values found for surface samples taken from agricultural lands fertilized with phosphate fertilizer, compost or cow manure or from uncultivated soils nearby, probably contaminated by agricultural P from nearby sites. Overall, our results show that deposition of dust originating from agricultural sources in close proximity to the lake supply substantial quantities of P to Lake Kinneret. Based on our results we suggest that when considering atmospheric P inputs to fresh water bodies more attention should be paid to land use in sites which are located upwind to the lake basin. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160502
Appears in Collections: 气候变化与战略
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作者单位: Department for Geography and Environmental Development, Ben Gurion University of the Negev, Beer-Sheva, Israel; Department of Environmental Sciences, Tel Hai College & MIGAL - Galilee Research Institute, Upper Galilee, Israel; The Institute of Earth Sciences, The Hebrew University of Jerusalem, Israel; Kinneret Limnological Laboratory, Israel Oceanographic and Limnological Research, Migdal, Israel
Recommended Citation:
Gross A.,Reichmann O.,Zarka A.,et al. Agricultural sources as major supplies of atmospheric phosphorus to Lake Kinneret[J]. Atmospheric Environment,2020-01-01,224