DOI: 10.1002/2017GB005858
论文题名: Phosphorus Loadings to the World's Largest Lakes: Sources and Trends
作者: Fink G. ; Alcamo J. ; Flörke M. ; Reder K.
刊名: Global Biogeochemical Cycles
ISSN: 0886-6236
EISSN: 1944-9224
出版年: 2018
卷: 32, 期: 4 语种: 英语
英文关键词: catchment
; developing world
; estimation method
; eutrophication
; fertilizer
; lacustrine environment
; lake pollution
; numerical model
; phosphorus
; pollutant source
; trend analysis
; water quality
学科: lake eutrophication
; lakes
; phosphorus loadings
; water quality
; WaterGAP modeling framework
; WorldQual model
中文摘要: Eutrophication is a major water quality issue in lakes worldwide and is principally caused by the loadings of phosphorus from catchment areas. It follows that to develop strategies to mitigate eutrophication, we must have a good understanding of the amount, sources, and trends of phosphorus pollution. This paper provides the first consistent and harmonious estimates of current phosphorus loadings to the world's largest 100 lakes, along with the sources of these loadings and their trends. These estimates provide a perspective on the extent of lake eutrophication worldwide, as well as potential input to the evaluation and management of eutrophication in these lakes. We take a modeling approach and apply the WorldQual model for these estimates. The advantage of this approach is that it allows us to fill in large gaps in observational data. From the analysis, we find that about 66 of the 100 lakes are located in developing countries and their catchments have a much larger average phosphorus yield than the lake catchments in developed countries (11.1 versus 0.7 kg TP km−2 year−1). Second, the main source of phosphorus to the examined lakes is inorganic fertilizer (47% of total). Third, between 2005–2010 and 1990–1994, phosphorus pollution increased at 50 out of 100 lakes. Sixty percent of lakes with increasing pollution are in developing countries. P pollution changed primarily due to changing P fertilizer use. In conclusion, we show that the risk of P-stimulated eutrophication is higher in developing countries. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160241
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: Center for Environmental Systems Research, University of Kassel, Kassel, Germany; Now at Landesanstalt für Umwelt Baden-Württemberg LUBW, Karlsruhe, Germany; Sussex Sustainability Research Programme, University of Sussex, Brighton, United Kingdom
Recommended Citation:
Fink G.,Alcamo J.,Flörke M.,et al. Phosphorus Loadings to the World's Largest Lakes: Sources and Trends[J]. Global Biogeochemical Cycles,2018-01-01,32(4)