气候变化领域集成服务门户(CCPortal): Societal phosphorus metabolism in future coastal environments: Insights from recent trends in Louisiana, USA

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DOI	10.1016/j.gloenvcha.2014.05.009
	Societal phosphorus metabolism in future coastal environments: Insights from recent trends in Louisiana, USA
	Roy E.D.; White J.R.; Seibert M.
发表日期	2014
ISSN	0959-3780
卷号	28 期号:1
英文摘要	Successful adaptation to global environmental change will require confronting multiple unfolding challenges in concert. Coastal regions vulnerable to sea level rise and tropical storms will likely also be influenced by resource limitation in an uncertain future. In this paper, we explore the interrelated dynamics of coastal population migration, economic instability, and anthropogenic phosphorus (P) flows. Accounting for P flows and improving human P use efficiency are critical tasks given the finite global supply of phosphate rock and widespread eutrophication. We use material flow analysis to examine societal P metabolism in the Upper Pontchartrain Basin in coastal Louisiana, USA for two 5-y time periods (2001-2005 and 2006-2010) to capture the effects of fertilizer economics and population growth partially driven by the impact of Hurricane Katrina in the lower basin in 2005. Mass balances encompass human-mediated P fluxes in food production and consumption subsystems across agricultural, developed, and forested landscapes. Drastic reductions in locally purchased inorganic P fertilizer (78% decline between periods) were correlated to increases in fertilizer prices. Total P input to the study region decreased from 5452 to 3268MgPy-1 between periods. Changes in P flows were primarily driven by fertilizer economics, declining dairy production, and the influx of new residents, which has been characterized by decentralized settlement that limits P recycling. Societal P metabolic efficiency increased from 22% to 32% due largely to reduced fertilizer inputs. Leakage to the Pontchartrain Estuary and the Mississippi River represented 17-23% of total system P input, while the vast majority of P accumulated within soils, wastewater systems, and landfills. We discuss basin trends and management implications. A historic opportunity exists to encourage future coastal development characterized by synergies between local agriculture and human habitation to promote energy efficient nutrient recycling. The effect would be a decreased vulnerability to future fertilizer price spikes, along with the mitigation of current and future eutrophication. © 2014 Elsevier Ltd.
英文关键词	Coastal vulnerability; Eutrophication; Fertilizer prices; Material flow analysis; Nutrient management; Phosphorus
学科领域	coastal zone; environmental assessment; environmental economics; fertilizer application; human activity; mass balance; metabolism; nutrient use efficiency; phosphorus; population growth; sea level change; anthropogenic source; decentralization; economic instability; eutrophication; fertilizer; future prospect; Hurricane Katrina 2005; material flow analysis; phosphate rock; population migration; price dynamics; spatiotemporal analysis; storm; trend analysis; vulnerability; Louisiana; United States; United States; Lake Pontchartrain; Mississippi River
语种	英语
scopus关键词	coastal zone; environmental assessment; environmental economics; fertilizer application; human activity; mass balance; metabolism; nutrient use efficiency; phosphorus; population growth; sea level change; anthropogenic source; decentralization; economic instability; eutrophication; fertilizer; future prospect; Hurricane Katrina 2005; material flow analysis; phosphate rock; population migration; price dynamics; spatiotemporal analysis; storm; trend analysis; vulnerability; Louisiana; United States; United States; Lake Pontchartrain; Mississippi River
来源期刊	Global Environmental Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/117733
作者单位	Wetland and Aquatic Biogeochemistry Lab, Department of Oceanography and Coastal Sciences, School of the Coast and Environment, Energy, Coast and Environment Building, Louisiana State University, Baton Rouge, LA 70803, United States; Coastal Sustainability Studio, Louisiana State University, 212 Design Building, Baton Rouge, LA 70803, United States
推荐引用方式 GB/T 7714	Roy E.D.,White J.R.,Seibert M.. Societal phosphorus metabolism in future coastal environments: Insights from recent trends in Louisiana, USA[J],2014,28(1).
APA	Roy E.D.,White J.R.,&Seibert M..(2014).Societal phosphorus metabolism in future coastal environments: Insights from recent trends in Louisiana, USA.Global Environmental Change,28(1).
MLA	Roy E.D.,et al."Societal phosphorus metabolism in future coastal environments: Insights from recent trends in Louisiana, USA".Global Environmental Change 28.1(2014).