Urban Ecosystems

, Volume 15, Issue 4, pp 809–848 | Cite as

Understanding the metabolism of urban-rural ecosystems

A multi-sectoral systems analysis
Article

Abstract

A Multi-sectoral Systems Analysis (MSA) methodology is presented as a tool for identifying the level of importance of flows of energy and materials (water, nitrogen, phosphorus, and carbon) as they pass through an anthropogenically manipulated system. That system comprises a web of processes, across a total of five industrial sectors: water, forestry, food, energy and waste management. Given the heterogeneous nature and quality of data sources, the propagation of data uncertainty is considered through a Regionalized Sensitivity Analysis (RSA) procedure, based on the Monte Carlo simulation approach. The MSA reveals the advantages of studying different material cycles simultaneously, in addition to interpreting them individually, while gaining insight into the magnitude of the associated flows. The proposed framework is illustrated for a case study of the Upper Chattahoochee Watershed, in which parts of Metro Atlanta are located. Results show that natural flows are predominant in the water and energy cycles. Direct human manipulations of water, i.e., withdrawals for public supply and power generation, are less than 25% of the amount received as precipitation. Solar input is 200 times the total demand for electricity. Apart from sun-light, gasoline for transportation is the flow with the largest content of energy; it is responsible for providing 71% of the total demand of fuels for uses other than power generation. In contrast, cycles of nutrients such as N and C are strongly related to the flows of fuels, mainly coal and natural gas. In a second tier, fertilizer use and the poultry industry in the region are significant for the use of nitrogen. Phosphorus fluxes are similarly dominated by the food sector and, as a consequence, to a lesser extent by the water sector, because of water’s role as a waste-conveyance medium.

Keywords

Substance flow analysis Phosphorus Resources Waste management Energy  Nitrogen Carbon Urban metabolism 

References

  1. Ahn H, James RT (2001) Variability, uncertainty, and sensitivity of phosphorus deposition load estimates in South Florida. Water Air Soil Pollut 126(1/2):37–51CrossRefGoogle Scholar
  2. Alexander A, Burklin C, Singleton A (2005) Landfill Gas Emissions Model (LandGEM) user’s guide, version 3.02. Tech. rep., Office of Research and Development, US Environmental Protection AgencyGoogle Scholar
  3. Anderson K, Downing J (2006) Dry and wet atmospheric deposition of nitrogen, phosphorus and silicon in an agricultural region. Water Air Soil Pollut 176(1):351–374CrossRefGoogle Scholar
  4. Antikainen R (2007) Substance flow analysis in Finland—four case studies on N and P flows. Tech. rep., Monographs of the Boreal Environment Research No. 27. Finnish Environment Institute, FinlandGoogle Scholar
  5. Antikainen R, Haapanen R, Rekolainen S (2004) Flows of nitrogen and phosphorus in Finland—the forest industry and use of wood fuels. J Clean Prod 12(8–10):919–934CrossRefGoogle Scholar
  6. Arena U, Mastellone ML, Perugini F (2003) The environmental performance of alternative solid waste management options: a life cycle assessment study. Chem Eng J 96(1–3):207–222CrossRefGoogle Scholar
  7. Azar C, Holmberg J, Lindgren K (1996) Socio-ecological indicators for sustainability. Ecol Econ 18:89–112CrossRefGoogle Scholar
  8. Baker LA, Hope D, Xu Y, Edmonds J, Lauver L (2001) Nitrogen balance for the Central Arizona-Phoenix (CAP) ecosystem. Ecosystems 4(6):582–602CrossRefGoogle Scholar
  9. Baker L, Hartzheim P, Hobbie S, King J, Nelson K (2007) Effect of consumption choices on fluxes of carbon, nitrogen and phosphorus through households. Urban Ecosyst 10:97–117CrossRefGoogle Scholar
  10. Barber NL (2009) Summary of estimated water use in the united states in 2005: U.S. geological survey fact sheet 2009-3098. Tech. rep., U.S. Geologycal SurveyGoogle Scholar
  11. Barczak S, Das K, Kilpatrick R (2005) Water quality implications of bio-fuels development in Georgia. In: Hatcher K (ed) Georgia water resources conference. The University of Georgia, Athens, GeorgiaGoogle Scholar
  12. Barles S (2007) Feeding the city: food consumption and flow of nitrogen, Paris, 1801–1914. Sci Total Environ 375(1–3):48–58PubMedCrossRefGoogle Scholar
  13. Barles S (2009) Urban metabolism of Paris and its region. J Ind Ecol 13(6):898–913CrossRefGoogle Scholar
  14. Bauer D (2009) Environmental policy: a growing opportunity for material flow analysis. J Ind Ecol 13(5):666–669CrossRefGoogle Scholar
  15. Baxter LL, Mitchell RE, Fletcher TH, Hurt RH (1996) Nitrogen release during coal combustion. Energy Fuels 10(1):188–196CrossRefGoogle Scholar
  16. Beck MB (2005) Vulnerability of water quality in intensively developing urban watersheds. Environ Model Softw 20(4):379–380CrossRefGoogle Scholar
  17. Beck MB, Cummings RG (1996) Wastewater infrastructure: challenges for the sustainable city in the new millennium. Habitat Intl 20(3):405–420CrossRefGoogle Scholar
  18. Beck MB, Chen J, Saul AJ, Butler D (1994) Urban drainage in the 21st century: assessment of new technology on the basis of global material flows. Water Sci Technol 30(2):1–12Google Scholar
  19. Beck MB, Jiang F, Shi F, Villarroel Walker R, Osidele OO, Lin Z, Demir I, Hall JW (2010) Re-engineering cities as forces for good in the environment. Proc Inst Civ Eng-Eng Sustain 163(1):31–46CrossRefGoogle Scholar
  20. Beck MB, Gupta HV, Rastetter E, Shoemaker C, Tarboton D, Butler R, Edelson D, Graber H, Gross L, Harmon T, McLaughlin D, Paola C, Peters D, Scavia D, Schnoor JL, Weber L (2009) Grand challenges of the future for environmental modeling. Tech. rep., National Science FoundationGoogle Scholar
  21. Bjorklund A, Dalemo M, Sonesson U (1999) Evaluating a municipal waste management plan using ORWARE. J Clean Prod 7(4):271–280CrossRefGoogle Scholar
  22. Boyer EW, Goodale CL, Jaworski NA, Howarth RW (2002) Anthropogenic nitrogen sources and relationships to riverine nitrogen export in the northeastern USA. Biogeochemistry 57–58(1):137–169CrossRefGoogle Scholar
  23. Browne D, O’Regan B, Moles R (1994) A comparative analysis of the application of sustainability metric tools using Tipperary Town, Ireland, as a case study. Changes pp 44–48Google Scholar
  24. Brunner PH, Rechberger H (2003) Practical handbook of material flow analysis. Lewis Publishers, Boca Raton, FLCrossRefGoogle Scholar
  25. Butalia T, Wolfe W, Dick W, Resources N, Limes D, Stowell R (1999) Coal combustion products, report AEX-330-99Google Scholar
  26. Canadell JG, Ciais P, Dhakal S, Le Quéré C, Patwardhan A, Raupach MR (2009) The human perturbation of the carbon cycle. Tech. rep., UNESCO-SCOPE-UNEPGoogle Scholar
  27. Chapman MJ, Peck MF (1997) Ground-water resources of the Upper Chattahoochee river basin in Georgia—Subarea 1 of the Apalachicola-Chattahoochee-Flint and Alabama-Coosa-Tallapoosa River basinsGoogle Scholar
  28. Cordell D, Drangert J-O, White S (2009) The story of phosphorus: global food security and food for thought. Glob Environ Change 19(2):292–305CrossRefGoogle Scholar
  29. Côté R, Grant J, Weller A, Zhu Y, Toews C (2006) Industrial ecology and the sustainability of Canadian cities. Tech. rep., Eco-efficiency Centre, Dalhousie University. Available online at http://eco-efficiency.management.dal.ca/Files/Industrial_ecology_and_Canadian_cities.pdf. Accessed Aug 2010
  30. Crutzen PJ, Beck MB, Thompson M (2007) Cities blue ribbon panel on grand challenges for engineering. US National Academy of Engineering. Available online http://www.engineeringchallenges.org. Last accessed 18 Nov 2009. Also published in Options, Winter 2007, p 8, International Institute for Applied Systems Analysis, Laxenburg, Austria
  31. Currie WS, Yanai RD, Piatek KB, Prescott CE, Goodale CL (2003) Processes affecting carbon storage in the forest floor and in downed woody debris. In: Kimble JM, Lal R, Birdsey R, Heath LS (eds) The potential of U.S. forest soils to sequester carbon and mitigate the greenhouse effect. CRC Press LLC, pp 135–157Google Scholar
  32. Danius L, Burström F (2001) Regional material flow analysis and data uncertainties: can the results be trusted? In: Hilti LM, Giligen PW (eds) 15th international symposium on informatics for environmental protection. Zurich, Switzerland, pp 10–12Google Scholar
  33. Decker EH, Elliott S, Smith FA, Blake DR, Rowland FS (2000) Energy and material flow through the urban ecosystem. Annu Rev Energy Environ 25(1):685–740CrossRefGoogle Scholar
  34. Deelstra T, Girardet H (2000) Urban agriculture and sustainable cities. In: Bakker N, Dubbeling M, Guendel S, Sabel Koschella U, de Zeeuw H (eds) Growing cities, growing food: urban agriculture on the policy agenda. A reader on urban agriculture, DSE, Feldafing, Deutschland, pp 43–65Google Scholar
  35. Dixon P, Mote T (2003) Patterns and causes of atlanta’s urban heat island-initiated precipitation. J Appl Meterol 42(9):1273–1284CrossRefGoogle Scholar
  36. Dowdell RJ, Mian MH (1982) Fate of nitrogen applied to agricultural crops with particular reference to denitrification [and discussion]. Philos Trans R Soc Lond B Biol Sci 296(1082):363–373CrossRefGoogle Scholar
  37. Doyle P (1990) Modelling catchment evaporation: An objective comparison of the Penman and Morton approaches. J Hydrol 121(1–4):257–276CrossRefGoogle Scholar
  38. Dunne T, Leopold LB (1978) Water in environmental planning. WH Freeman, New YorkGoogle Scholar
  39. Eghball B, Power JF, Gilley JE, Doran JW (1997) Nutrient, carbon, and mass loss during composting of beef cattle feedlot manure. J Environ Qual 26(1):189–193CrossRefGoogle Scholar
  40. Eghball B, Wienhold BJ, Woodbury BL, Eigenberg RA (2005) Plant availability of phosphorus in swine slurry and cattle feedlot manure. Agron J 97(2):542–548CrossRefGoogle Scholar
  41. EIA (2010) Annual energy review 2009, Report No. DOE/EIA–0384. US Energy Information Administration. Available online http://www.eia.gov/emeu/aer/. Last accessed June 2011
  42. EIA (2011) Residential energy consumption survey (RECS). US Energy Information Administration. Available online http://www.eia.gov/consumption/residential/. Last accessed June 2011
  43. Emmerth PP, Bayne DR (1996) Urban influence on phosphorus and sediment loading of West Point Lake, Georgia. Water Resour 32(1):145–154Google Scholar
  44. EPA (2010) Municipal solid waste in the United States: 2009 facts and figures. Tech. rep., US Environmental Protection AgencyGoogle Scholar
  45. FAO (1986) Wood gas as engine fuel. Tech. rep., Food and Agriculture Organization of the United Nations. Available online http://www.fao.org/docrep/T0512E/T0512e00.htm. Last accessed Feb 2010
  46. FAO (2009) Food balance sheet for US in 2000. Food and Agriculture Organization of the United Nations. Available online http://faostat.fao.org/. Last accessed 10 Feb 2010
  47. Feeley TJ III, Skone TJ, Stiegel Jr GJ, McNemar A, Nemeth M, Schimmoller B, Murphy JT, Manfredo L (2008) Water: a critical resource in the thermoelectric power industry. Energy 33(1):1–11CrossRefGoogle Scholar
  48. Forkes J (2007) Nitrogen balance for the urban food metabolism of Toronto, Canada. Resour Conserv Recycl 52(1):74–94CrossRefGoogle Scholar
  49. GAEPD (2006) Georgia energy review 2005. Tech. rep., Division of Energy Resources of the Georgia Environmental Facilities Authority and Environmental Protection Division Department of Natural ResourcesGoogle Scholar
  50. Gale ES, Sullivan DM, Cogger CG, Bary AI, Hemphill DD, Myhre EA (2006) Estimating plant-available nitrogen release from manures, composts, and specialty products. J Environ Qual 35(6):2321–2332PubMedCrossRefGoogle Scholar
  51. GAPOWER (2011a) Facts and figures of Georgia power facilities. Georgia power. Available online at http://www.georgiapower.com/about/facts.asp. Last accessed 5 June 2011
  52. GAPOWER (2011b) Plant mcdounough. natural gas: providing for a cleaner future. Georgia Power. Available online at http://www.georgiapower.com/generation/brochure_final.pdf. Last accessed 5 June 2011
  53. Grimmond CSB, Oke TR (1986) Urban water balance 2. results from a suburb of Vancouver, British Columbia. Water Resour Res 22(10):1404–1412CrossRefGoogle Scholar
  54. Grimmond CSB, Oke TR (2002) Turbulent heat fluxes in urban areas: observations and a Local-scale urban meteorological parameterization scheme (LUMPS). J Appl Meterol 41(7):792–810CrossRefGoogle Scholar
  55. Hao X, Chang C, Larney FJ (2004) Carbon, nitrogen balances and greenhouse gas emission during cattle feedlot manure composting. J Environ Qual 33(1):37–44PubMedCrossRefGoogle Scholar
  56. Hashimoto S, Moriguchi Y (2004) Proposal of six indicators of material cycles for describing society’s metabolism: from the viewpoint of material flow analysis. Resour Conserv Recycl 40(3):185–200CrossRefGoogle Scholar
  57. Hedbrant J, Sörme L (2001) Data vagueness and uncertainties in urban heavy-metal data collection. Water, Air and Soil Pollution: Focus 1(3–4):43–53CrossRefGoogle Scholar
  58. Hillman T, Ramaswami A (2010) Greenhouse gas emission footprints and energy use benchmarks for eight US cities. Environ Sci Technol 44(6):1902–1910PubMedCrossRefGoogle Scholar
  59. Hornberger GM, Spear RC (1980) Eutrophication in peel inlet—i. the problem-defining behavior and a mathematical model for the phosphorus scenario. Water Res 14(1):29–42CrossRefGoogle Scholar
  60. Hosier RH (1993) Urban energy systems in Tanzania: a tale of three cities. Energy Policy 21(5):510–523CrossRefGoogle Scholar
  61. Howard JL (2007) U.S. timber production, trade, consumption, and price statistics 1965 to 2005. Tech. rep., U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. Research Paper FPL-RP-637Google Scholar
  62. Hower JC, Robl TL, Anderson C, Thomas GA, Sakulpitakphon T, Mardon SM, Clark WL (2005) Characteristics of coal combustion products (CCP’s) from Kentucky power plants, with emphasis on mercury content. Fuel 84(11):1338–1350CrossRefGoogle Scholar
  63. Huang SL, Lee CL, Chen CW (2006) Socioeconomic metabolism in Taiwan: emergy synthesis versus Material Flow Analysis. Resour Conserv Recycl 48(2):166–196CrossRefGoogle Scholar
  64. Hutson SS, Barber NL, Kenny JF, Linsey KS, Lumia DS, Maupin MA (2005) Estimated use of water in the United States in 2000: U.S. Geological Survey circular 1268. Tech. rep., USGSGoogle Scholar
  65. IPCC (2006a) Guidelines for national greenhouse gas inventories. Tech. rep., volume 4: agriculture, forestry and other land use, chapter 11: N2O emissions from managed soils, and CO2 emissions from lime and urea application. Intergovernmental Panel on Climate ChangeGoogle Scholar
  66. IPCC (2006b) Guidelines for national greenhouse gas inventories. Tech. rep., volume 2: energy, chapter 3: mobile combustion. Intergovernmental Panel on Climate ChangeGoogle Scholar
  67. IPCC (2007) Climate change 2007: Synthesis report. Intergovernmental Panel on Climate Change. Available online http://www.ipcc.ch/. Last accessed 10 Feb 2010
  68. Jaworski NA, Groffman PM, Keller AA, Prager JC (1992) A watershed nitrogen and phosphorus balance: the Upper Potomac River Basin. Estuaries 15(1):83–95CrossRefGoogle Scholar
  69. JJG (2000) Chapter 3: Comprehensive inventory. in ‘Chattahoochee River greenway planning and implementation handbook’. Tech. rep., Jordan, Jones, & Goulding, Inc. Available online at http://www1.gadnr.org/greenspace/c_index.html. Last accessed 10 Feb 2010
  70. JJG (2003a) Long-term wastewater management plan. Jordan, Jones & Goulding, Inc. Prepared for Metropolitan North Georgia Water Planning DistrictGoogle Scholar
  71. JJG (2003b) Water supply and water conservation management plan. Jordan, Jones & Goulding, Inc. Prepared for Metropolitan North Georgia Water Planning DistrictGoogle Scholar
  72. Johnes PJ (1996) Evaluation and management of the impact of land use change on the nitrogen and phosphorus load delivered to surface waters: the export coefficient modelling approach. J Hydrol 183(3–4):323–349CrossRefGoogle Scholar
  73. Johnke B (2000) Emissions from waste incineration. In: Penman J, Gytarsky M, Hiraishi T, Krug T, Kruger D, Pipatti R, Buendia L, Miwa K, Ngara T, Tanabe K, Wagner F (eds) IPCC good practice guidance and uncertainty management in national greenhouse gas inventories. Institute for Global Environmental StrategiesGoogle Scholar
  74. Kambara S, Takarada T, Toyoshima M, Kato K (1995) Relation between functional forms of coal nitrogen and NOx emissions from pulverized coal combustion. Fuel 74(9):1247–1253CrossRefGoogle Scholar
  75. Kawamura K, Steinberg S, Ng L, Kaplan IR (2001) Wet deposition of low molecular weight mono- and di-carboxylic acids, aldehydes and inorganic species in Los Angeles. Atmos Environ 35(23):3917–3926CrossRefGoogle Scholar
  76. Kaye JP, Groffman PM, Grimm NB, Baker LA, Pouyat RV (2006) A distinct urban biogeochemistry? Trends Ecol Evol 21(4):192–199PubMedCrossRefGoogle Scholar
  77. Kennedy C, Cuddihy J, Engel-Yan J (2007) The changing metabolism of cities. J Ind Ecol 11(2):43–59CrossRefGoogle Scholar
  78. Kenway SJ, Lant PA, Priestley A, Daniels P (2011) The connection between water and energy in cities: a review. Water Sci Technol 63(9):1983–1990PubMedCrossRefGoogle Scholar
  79. Khan MR, Daugherty KE (1992) Clean energy from waste. In: Khan MR (ed) ACS symposium series: clean energy from waste and coal, vol 25. American Chemical Society, Washington, DC, p 30CrossRefGoogle Scholar
  80. Landry G, Waltz C, Plank CO (2002) Fertilization for lawns bulletin 710. Tech. rep., Cooperative Extension Service, The University of Georgia. Available online http://pubs.caes.uga.edu/caespubs/pubcd/B710.htm. Last accessed 17 June 2009
  81. Lang DJ, Binder CR, Stauffacher M, Ziegler C, Schleiss K, Scholz RW (2006) Material and money flows as a means for industry analysis of recycling schemes: a case study of regional bio-waste management. Resour Conserv Recycl 49(2):159–190CrossRefGoogle Scholar
  82. Larsen TA, Lienert J (2007) Novaquatis final report. NoMix—a new approach to urban water management. Tech. rep., Eawag, 8600 Duebendorf, SwitzerlandGoogle Scholar
  83. Lewis NS, Nocera DG (2006) Powering the planet: chemical challenges in solar energy utilization. Proc Natl Acad Sci 103(43):15,729–15,735CrossRefGoogle Scholar
  84. Logan BE, Guiot SR, Pavlostathis SG, van Lier JB (2005) Simultaneous wastewater treatment and biological electricity generation. Water Sci Technol 52(1–2):31–37PubMedGoogle Scholar
  85. Lohse KA, Hope D, Sponseller R, Allen JO, Grimm NB (2008) Atmospheric deposition of carbon and nutrients across an arid metropolitan area. Sci Total Environ 402(1):95–105PubMedCrossRefGoogle Scholar
  86. Lundin M, Bengtsson M, Molander S (2000) Life cycle assessment of wastewater systems: influence of system boundaries and scale on calculated environmental loads. Environ Sci Technol 34(1):180–186CrossRefGoogle Scholar
  87. Lundin M, Olofsson M, Pettersson GJ, Zetterlund H (2004) Environmental and economic assessment of sewage sludge handling options. Resour Conserv Recycl 41(4):255–278CrossRefGoogle Scholar
  88. Mahowald N, Jickells TD, Baker AR, Artaxo P, Benitez-Nelson CR, Bergametti G, Bond TC, Chen Y, Cohen DD, Herut B, Kubilay N, Losno R, Luo C, Maenhaut W, McGee KA, Okin GS, Siefert RL, Tsukuda S (2008) Global distribution of atmospheric phosphorus sources, concentrations and deposition rates, and anthropogenic impacts. Glob Biogeochem Cycles 22(4):1–19CrossRefGoogle Scholar
  89. Mallick RB, Chen BL, Bhowmick S (2009) Harvesting energy from asphalt pavements and reducing the heat island effect. Int J Sust Eng 2(3):214–228CrossRefGoogle Scholar
  90. Matsubae K, Kajiyama J, Hiraki T, Nagasaka T (2011) Virtual phosphorus ore requirement of Japanese economy. Chemosphere 84(6):767–772PubMedCrossRefGoogle Scholar
  91. Maurer M, Schwegler P, Larsen T (2003) Nutrients in urine: energetic aspects of removal and recovery. Water Sci Technol 48(1):37–46PubMedGoogle Scholar
  92. McDonough W, Braungart M (2002) Cradle to cradle: remaking the way we make things. North Point Press, New YorkGoogle Scholar
  93. Mines RO Jr, Behrend GR, Holmes Bell G (2004) Assessment of AWT systems in the metro atlanta area. J Environ Manag 70(4):309–314CrossRefGoogle Scholar
  94. Mitchell VG, Mein RG, McMahon TA (2001) Modelling the urban water cycle. Environ Model Softw 16(7):615–629CrossRefGoogle Scholar
  95. Mitchell VG, Cleugh HA, Grimmond CSB, Xu J (2008) Linking urban water balance and energy balance models to analyse urban design options. Hydrol Process 22(16):2891–2900CrossRefGoogle Scholar
  96. Morf LS, Buser AM, Taverna R, Bader HP, Scheidegger R (2008) Dynamic substance flow analysis as a valuable risk evaluation tool—a case study for brominated flame retardants as an example of potential endocrine disrupters. Chimia International Journal for Chemistry 62(8):424–431CrossRefGoogle Scholar
  97. NARSAL (2006) Georgia land use trends (GLUT). University of Georgia, Institute of Ecology, Natural Resources Spatial Analysis Laboratory, Athens, GAGoogle Scholar
  98. Neset TSS, Bader HP, Scheidegger R, Lohm U (2008) The flow of phosphorus in food production and consumption—Linköping, Sweden, 1870–2000. Sci Total Environ 396(2–3):111–120CrossRefGoogle Scholar
  99. NRC (1961) Nutrient requirements of poultry. World’s Poult Sci J 17(02):140–166CrossRefGoogle Scholar
  100. NRC (1987) Predicting feed intake of food-producing animals. National Academy Press. National Research Council, Committee on Animal Nutrition, Board on Agriculture, Washington, DC. Available online http://www.nap.edu/openbook.php?isbn=030903695X. Last accessed 10 Feb 2010
  101. NRC (1998) Nutrient requirements of Swine, 10th edn. National Academy Press. Subcommittee on Swine Nutrition, Committee on Animal Nutrition, Board on Agriculture, National Research Council. Available online http://www.nap.edu/. Last accessed 10 Feb 2010
  102. NRC (2000) Nutrient requirements of beef cattle, 7th edn. National Academy Press. Subcommittee on Beef Cattle Nutrition, Committee on Animal Nutrition, Board on Agriculture, National Research Council, Washington, DC. Available online http://www.nap.edu/. Last accessed 10 Feb 2010
  103. Ohlström MO, Lehtinen KEJ, Moisio M, Jokiniemi JK (2000) Fine-particle emissions of energy production in Finland. Atmos Environ 34(22):3701–3711CrossRefGoogle Scholar
  104. Öquist MG, Wallin M, Seibert J, Bishop K, Laudon H (2009) Dissolved inorganic carbon export across the soil/stream interface and its fate in a boreal headwater stream. Environ Sci Technol 43(19):7364–7369PubMedCrossRefGoogle Scholar
  105. Osidele OO, Zeng W, Beck MB (2003) Coping with uncertainty: a case study in sediment transport and nutrient load analysis. J Water Resour Plan Manage 129(4):345–355CrossRefGoogle Scholar
  106. Peters GP (2010) Carbon footprints and embodied carbon at multiple scales. Curr Opin Environ Sustain 2(4):245–250CrossRefGoogle Scholar
  107. Prairie YT, Duarte CM (2007) Direct and indirect metabolic CO2 release by humanity. Biogeosciences 4(2):215–217CrossRefGoogle Scholar
  108. Preusch PL, Adler PR, Sikora LJ, Tworkoski TJ (2002) Nitrogen and phosphorus availability in composted and uncomposted poultry litter. J Environ Qual 31(6):2051–2057PubMedCrossRefGoogle Scholar
  109. Rao PD, Walsh DE (1997) Nature and distribution of phosphorus minerals in cook inlet coals, Alaska. Int J Coal Geol 33(1):19–42CrossRefGoogle Scholar
  110. Raveh A, Avnimelech Y (1979) Leaching of pollutants from sanitary landfill models. J Water Pollut Con F 51(11):2705–2716Google Scholar
  111. Rees W, Wackernagel M (1996) Urban ecological footprints: why cities cannot be sustainable and why they are a key to sustainability. Environ Impact Asses Rev 16(4):223–248CrossRefGoogle Scholar
  112. Reicher Z, Throssell C (1998) Fertilizing established lawns AY-22. Tech. rep., Cooperative Extension Agency, Purdue UniversityGoogle Scholar
  113. Reynolds TD, Richards PA (1977) Unit operations and processes in environmental engineering, 2nd edn. PWS Publishing Company, BostonGoogle Scholar
  114. Risse M (2009) Land application of livestock and poultry manure. Cooperative Extension Agency, The University of Georgia. Circular 826. Available online http://pubs.caes.uga.edu/caespubs/pubcd/C826/C826.htm. Last accessed 10 Feb 2010
  115. Roberts TL, Stewart WM (2002) Inorganic phosphorus and potassium production and reserves. Better Crops 86(2):6–7Google Scholar
  116. RWBECK (2005) Georgia statewide waste characterization study. Tech. rep., R.W.BeckGoogle Scholar
  117. Sahely HR, Dudding S, Kennedy CA (2003) Estimating the urban metabolism of canadian cities: Greater Toronto area case study. Can J Civ Eng 30(2):468–483CrossRefGoogle Scholar
  118. Sánchez L, Díez JA, Vallejo A, Cartagena MC (2001) Denitrification losses from irrigated crops in central Spain. Soil Biol Biochem 33(9):1201–1209CrossRefGoogle Scholar
  119. Schlesinger WH (1997) Biogeochemistry: an analysis of global change, 2nd edn. Academic Press, New YorkGoogle Scholar
  120. Scott J, Beydoun D, Amal R, Low G, Cattle J (2005) Landfill management, leachate generation, and leach testing of solid wastes in australia and overseas. Crit Rev Environ Sci Technol 35:239–332CrossRefGoogle Scholar
  121. Shizas I, Bagley DM (2004) Experimental determination of energy content of unknown organics in municipal wastewater streams. J Energy Eng 130(2):45–53CrossRefGoogle Scholar
  122. Simmelsgaard SE (1998) The effect of crop, n-level, soil type and drainage on nitrate leaching from danish soil. Soil Use Manag 14(1):30–36CrossRefGoogle Scholar
  123. Sonesson U, Jönsson Ha, Mattsson B (2004) Postconsumption sewage treatment in environmental systems analysis of foods. J Ind Ecol 8(3):51–64CrossRefGoogle Scholar
  124. Spear RC, Hornberger GM (1980) Eutrophication in peel inlet—ii. identification of critical uncertainties via generalized sensitivity analysis. Water Res 14(1):43–49CrossRefGoogle Scholar
  125. Spiegelhalter T, Arch RA (2010) Biomimicry and circular metabolism for the cities of the future. In: Brebbia CA, Hernandez S, Tiezzi E (eds) The sustainable City VI: urban regeneration and sustainability, vol 129, pp 215–226Google Scholar
  126. Tangsubkul N, Moore S, Waite TD (2005) Incorporating phosphorus management considerations into wastewater management practice. Environ Sci Policy 8(1):1–15CrossRefGoogle Scholar
  127. Thompson MT (1998) Forest statistics for north central Georgia, 1998. Tech. rep., U.S. Department of Agriculture, Forest Service, Southern Research Station. Available online http://www.srs.fs.usda.gov/pubs/viewpub.php?index=305. Last accessed 10 Feb 2010
  128. Tiquia SM, Richard TL, Honeyman MS (2002) Carbon, nutrient, and mass loss during composting. Nutr Cycl Agroecosyst 62(1):15–24CrossRefGoogle Scholar
  129. Todd RL, Waider JB, Cornaby BW (1975) Significance of biological nitrogen fixation and denitrification in a deciduous forest ecosystem. In: Howell FG, Smith MH, Gentry JB (eds) Mineral cycling in southeastern ecosystems. US Department of Energy, Savannah, GA, ERDA Symposium Series, p 920Google Scholar
  130. Tyson SC, Cabrera ML (1993) Nitrogen mineralization in soils amended with composted and uncomposted poultry litter. Commun Soil Sci Plant Anal 24(17):2361–2374CrossRefGoogle Scholar
  131. USDA (1994) 1992 census of agriculture Georgia. Tech. rep., National Agricultural Statistics Service (NASS), Agricultural Statistics Board of the U.S. Department of Agriculture. Available online http://www.agcensus.usda.gov/Publications/1992/index.asp. Last accessed 10 Feb 2010
  132. USDA (2004) 2002 census of agriculture Georgia. Tech. rep., National Agricultural Statistics Service (NASS), Agricultural Statistics Board of the U.S. Department of Agriculture. Available online http://www.agcensus.usda.gov/Publications/2002/County_Profiles/Georgia/index.asp. Last accessed 10 Feb 2010
  133. USDA (2008) U.S. fertilizer use and price. Economic Research Service and the US Department of Agriculture. Available online http://www.ers.usda.gov/Data/FertilizerUse/. Last accessed 10 Feb 2010
  134. USDA (2009) 2007 census of agriculture georgia. Tech. rep., National Agricultural Statistics Service (NASS), Agricultural Statistics Board of the U.S. Department of Agriculture. Available online http://www.agcensus.usda.gov/Publications/2007/index.asp. Last accessed 10 Feb 2010
  135. USGS (2009) Irrigation water use. US Geological Survey. Available online http://ga.water.usgs.gov/edu/wuir.html. Last accessed 10 Feb 2010
  136. Villarroel Walker R (2010) Sustainbility beyond eco-efficiency: a multi-sectoral systems analysis for water, nutrients, and energy. PhD thesis, Warnell School of Forestry and Natural Resources. The University of GeorgiaGoogle Scholar
  137. Villarroel Walker R, Beck MB, Hall JW(2012) Water—and nutrient and energy—systems in urbanizing watersheds. Front Environ Sci Engin (in press)Google Scholar
  138. Vitousek PM, Aber JD, Howarth RW, Likens GE, Matson PA, Schindler DW, Schlesinger WH, Tilman DG (1997) Human alteration of the global nitrogen cycle: sources and consequences. Ecol Appl 7(3):737–750Google Scholar
  139. WEF (2009) Thirsty energy: water and energy in the 21st century. Tech. rep., World Economic Forum in partnership with Cambridge Energy Research AssociateGoogle Scholar
  140. WHO/UNICEF (2010) Progress on sanitation and drinking water—2010 update. Tech. rep., WHO/UNICEF Joint Monitoring Programme for Water Supply and SanitationGoogle Scholar
  141. Wiedmann T, Minx J (2008) A definition of ‘carbon footprint’. In: Pertsova CC (ed) Ecological economics research trends. Nova Science Publishers, Hauppauge, NY, pp 1–11Google Scholar
  142. Wilsenach J, Van Loosdrecht M (2003) Impact of separate urine collection on wastewater treatment systems. Water Sci Technol 48(1):103–110PubMedGoogle Scholar
  143. Wolman A (1965) The metabolism of cities. Sci Am 213(3):179–190PubMedCrossRefGoogle Scholar

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© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  1. 1.Warnell School of Forestry and Natural ResourcesUniversity of GeorgiaAthensUSA

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