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Understanding the Environmental and Social Impacts of Residential Flood Irrigation in the Metropolitan Area of Phoenix, AZ
Understanding the Environmental and Social Impacts of Residential Flood Irrigation in the ...
Understanding the Environmental and Social Impacts of Residential Flood Irrigation in the Metropolitan Area of Phoenix, AZ

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자료유형  
 학위논문 서양
최종처리일시  
20260202105310
ISBN  
9798265465900
DDC  
577
저자명  
Vahid, Eric.
서명/저자  
Understanding the Environmental and Social Impacts of Residential Flood Irrigation in the Metropolitan Area of Phoenix, AZ
발행사항  
[Sl] : Arizona State University, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
134 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-06, Section: A.
주기사항  
Advisor: Childers, Daniel L.
학위논문주기  
Thesis (Ph.D.)--Arizona State University, 2025.
초록/해제  
요약Urban sustainability in arid environments demands careful attention to the interplay between ecological processes, infrastructure legacies, and social dynamics. In the Phoenix, Arizona metropolitan area, residential flood irrigation-a legacy practice originating in early agricultural settlement-persists in more than 25,000 homes, yet its environmental and social implications remain poorly understood. This dissertation integrates ecological, microclimatic, and social perspectives to examine the consequences of residential flood irrigation for greenhouse gas emissions, neighborhood thermal regulation, and community dynamics.To investigate soil-based impacts, I conducted field measurements at ten residential properties across Phoenix, Tempe, and Mesa. Nitrous oxide (N₂O) emissions were quantified using gas chambers, while soil cores were analyzed for denitrification potential (DNP), moisture, and organic matter. Results revealed that flood irrigation produces exceptionally high N₂O fluxes-40 to 600 times greater than non-irrigated landscapes-with emissions strongly correlated to soil moisture and time since flooding. In contrast, DNP values were comparable to other urban soils, with vegetation type influencing rates more than vegetation density. To assess microclimatic and infrastructural dimensions, I deployed microclimate sensors and analyzed municipal data to evaluate air temperature, relative humidity, water consumption, and energy savings. Findings showed that flood irrigation temporarily reduced yard-level air temperatures and increased humidity, yielding modest but measurable cooling benefits on the order of 2-6 °C in some cases. However, these thermal advantages came at the cost of disproportionately high water use, raising questions about trade-offs in the energy-water nexus of desert cities. Finally, to explore social dimensions, I conducted semi-structured interviews with twenty residents across seven neighborhoods. Thematic analysis highlighted both cooperation and conflict embedded in flood irrigation practices, including shared gate management, disputes over water timing, and perceptions of fairness in distribution. Flood irrigation also fostered environmental identity and neighborhood cohesion, underscoring its role as a socio-technical system that extends beyond water delivery. Taken together, this research demonstrated that residential flood irrigation is simultaneously an environmental liability and a socially valued practice. By linking biogeochemical fluxes, microclimatic effects, and neighborhood relationships, this dissertation contributes to broader debates on urban ecological infrastructure and climate adaptation. The findings provide actionable insights for policymakers, utility managers, and residents seeking to balance water conservation, climate resilience, community values and community cohesion [DC1.1]in arid urban contexts.
일반주제명  
Environmental science
일반주제명  
Ecology
일반주제명  
Social research
일반주제명  
Agricultural engineering
일반주제명  
Water resources management
키워드  
Biogeochemistry
키워드  
Flood irrigation
키워드  
Greenhouse gas emissions
키워드  
Microclimate
키워드  
Neighborhood dynamics
키워드  
Water use
기타저자  
Arizona State University Sustainability
기본자료저록  
Dissertations Abstracts International. 87-06A.
전자적 위치 및 접속  
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MARC

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■1001  ▼aVahid,  Eric.
■24510▼aUnderstanding  the  Environmental  and  Social  Impacts  of  Residential  Flood  Irrigation  in  the  Metropolitan  Area  of  Phoenix,  AZ
■260    ▼a[Sl]▼bArizona  State  University▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a134  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-06,  Section:  A.
■500    ▼aAdvisor:  Childers,  Daniel  L.
■5021  ▼aThesis  (Ph.D.)--Arizona  State  University,  2025.
■520    ▼aUrban  sustainability  in  arid  environments  demands  careful  attention  to  the  interplay  between  ecological  processes,  infrastructure  legacies,  and  social  dynamics.  In  the  Phoenix,  Arizona  metropolitan  area,  residential  flood  irrigation-a  legacy  practice  originating  in  early  agricultural  settlement-persists  in  more  than  25,000  homes,  yet  its  environmental  and  social  implications  remain  poorly  understood.  This  dissertation  integrates  ecological,  microclimatic,  and  social  perspectives  to  examine  the  consequences  of  residential  flood  irrigation  for  greenhouse  gas  emissions,  neighborhood  thermal  regulation,  and  community  dynamics.To  investigate  soil-based  impacts,  I  conducted  field  measurements  at  ten  residential  properties  across  Phoenix,  Tempe,  and  Mesa.  Nitrous  oxide  (N₂O)  emissions  were  quantified  using  gas  chambers,  while  soil  cores  were  analyzed  for  denitrification  potential  (DNP),  moisture,  and  organic  matter.  Results  revealed  that  flood  irrigation  produces  exceptionally  high  N₂O  fluxes-40  to  600  times  greater  than  non-irrigated  landscapes-with  emissions  strongly  correlated  to  soil  moisture  and  time  since  flooding.  In  contrast,  DNP  values  were  comparable  to  other  urban  soils,  with  vegetation  type  influencing  rates  more  than  vegetation  density.  To  assess  microclimatic  and  infrastructural  dimensions,  I  deployed  microclimate  sensors  and  analyzed  municipal  data  to  evaluate  air  temperature,  relative  humidity,  water  consumption,  and  energy  savings.  Findings  showed  that  flood  irrigation  temporarily  reduced  yard-level  air  temperatures  and  increased  humidity,  yielding  modest  but  measurable  cooling  benefits  on  the  order  of  2-6  °C  in  some  cases.  However,  these  thermal  advantages  came  at  the  cost  of  disproportionately  high  water  use,  raising  questions  about  trade-offs  in  the  energy-water  nexus  of  desert  cities.  Finally,  to  explore  social  dimensions,  I  conducted  semi-structured  interviews  with  twenty  residents  across  seven  neighborhoods.  Thematic  analysis  highlighted  both  cooperation  and  conflict  embedded  in  flood  irrigation  practices,  including  shared  gate  management,  disputes  over  water  timing,  and  perceptions  of  fairness  in  distribution.  Flood  irrigation  also  fostered  environmental  identity  and  neighborhood  cohesion,  underscoring  its  role  as  a  socio-technical  system  that  extends  beyond  water  delivery.  Taken  together,  this  research  demonstrated  that  residential  flood  irrigation  is  simultaneously  an  environmental  liability  and  a  socially  valued  practice.  By  linking  biogeochemical  fluxes,  microclimatic  effects,  and  neighborhood  relationships,  this  dissertation  contributes  to  broader  debates  on  urban  ecological  infrastructure  and  climate  adaptation.  The  findings  provide  actionable  insights  for  policymakers,  utility  managers,  and  residents  seeking  to  balance  water  conservation,  climate  resilience,  community  values  and  community  cohesion  [DC1.1]in  arid  urban  contexts.
■590    ▼aSchool  code:  0010.
■650  4▼aEnvironmental  science
■650  4▼aEcology
■650  4▼aSocial  research
■650  4▼aAgricultural  engineering
■650  4▼aWater  resources  management
■653    ▼aBiogeochemistry
■653    ▼aFlood  irrigation
■653    ▼aGreenhouse  gas  emissions
■653    ▼aMicroclimate
■653    ▼aNeighborhood  dynamics
■653    ▼aWater  use
■690    ▼a0768
■690    ▼a0329
■690    ▼a0344
■690    ▼a0539
■690    ▼a0595
■71020▼aArizona  State  University▼bSustainability.
■7730  ▼tDissertations  Abstracts  International▼g87-06A.
■790    ▼a0010
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360137▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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