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Cropland Use, Agricultural Technology, and Land Ownership: Consequences for Conservation and the Environment in the U.S. Corn Belt
Cropland Use, Agricultural Technology, and Land Ownership: Consequences for Conservation a...
Cropland Use, Agricultural Technology, and Land Ownership: Consequences for Conservation and the Environment in the U.S. Corn Belt

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자료유형  
 학위논문 서양
최종처리일시  
20260202103139
ISBN  
9798286446810
DDC  
630
저자명  
Tong, Jingyi.
서명/저자  
Cropland Use, Agricultural Technology, and Land Ownership: Consequences for Conservation and the Environment in the U.S. Corn Belt
발행사항  
[Sl] : Iowa State University, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
236 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-01, Section: B.
주기사항  
Advisor: Hennessy, David;Zhang, Wendong.
학위논문주기  
Thesis (Ph.D.)--Iowa State University, 2025.
초록/해제  
요약This dissertation consists of three chapters that investigate the economic and environmental dynamics of agricultural decision-making in the U.S. Inner Corn Belt, focusing on how market incentives, policy instruments, and land ownership structures influence land use, crop choice, and sustainability outcomes.In "Dynamic land use impact of farm policy changes in the U.S. Corn Belt: A grid-level analysis", we developed a multi-use land use model to quantify the dynamic effects of crop prices, nitrogen fertilizer costs, and crop insurance subsidies on cropland allocation using high-resolution field-level data. With the connection to the ecological model, we estimate nitrous oxide (N2O) emission changes induced by simulated policy shocks, such as crop and fertilizer price changes and crop insurance subsidies removal. We provided additional empirical evidence that crop rotation significantly influences land use decisions, showing stronger responses on the rotational margin than the extensive margin. Soybean prices drive corn-soybean substitution more than corn prices affect corn acreage. Long-run elasticities exceed short-run ones, supporting partial adjustment behavior. A novel and replicable risk proxy based on marginal risk premiums was developed, providing a simple and transparent way to measure regional crop-specific risks for future research. While soybean expansion shows signs of adverse selection, no such evidence is found for corn. Market-based tools like carbon pricing through corn or fertilizer markets effectively reduce emissions, though removing subsidies may lower fiscal costs at the risk of higher environmental harm. We provide the social cost estimates of the nitrous emission changes under the policy shocks for carbon-related policy guidance.In "Rootworm corn seed disadoption: Land use & regional welfare analysis in the Inner Corn Belt", we evaluate the regional yield and economic impacts of Bt corn disadoption in the U.S.. Inner Corn Belt during the declining adoption period. Results show larger yield benefits in the West than in the East, with diminished gains during the post-disadoption period (2014-2022). The larger decline in yield benefits in the West than in the East also potentially supports the role played by rootworm resistance. We further link these yield effects to the land use model from the previous chapter to analyze the land use decisions, revenue, and welfare responses to the simulated yield shocks. The results indicate that welfare differences from Bt corn disadoption highlight the need for policy efforts to prevent resistance and preserve trait effectiveness. Uniform prices mask asymmetries: the East's smaller production base amplifies revenue gains, while the West absorbs larger yield-driven losses.In "Institutional land ownership and conservation practice adoption in the U.S. Midwest", we examine the role of institutional farmland ownership in shaping conservation behavior. Leveraging landowner survey data from Iowa and an instrumental variable approach using capital gains tax liability, we find that institutional owners are significantly more likely to adopt and invest in no-till and cover crops, regarding both the adoption likelihood and intensity. This challenges assumptions that they prioritize short-term profits over long-term sustainability, and points out several potential drivers to these positive effects: the presence of professional farm managers, frequent landowner engagement with the land, more access to conservation information, structured transition plans, and long-term investment motivations.
일반주제명  
Agriculture
키워드  
Cover crops
키워드  
Crop rotation
키워드  
Farmland tenure
키워드  
Genetically engineered corn
키워드  
Land use
기타저자  
Iowa State University Economics
기본자료저록  
Dissertations Abstracts International. 87-01B.
전자적 위치 및 접속  
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MARC

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■1001  ▼aTong,  Jingyi.▼0(orcid)0009-0008-8618-2277
■24510▼aCropland  Use,  Agricultural  Technology,  and  Land  Ownership:  Consequences  for  Conservation  and  the  Environment  in  the  U.S.  Corn  Belt
■260    ▼a[Sl]▼bIowa  State  University▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a236  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-01,  Section:  B.
■500    ▼aAdvisor:  Hennessy,  David;Zhang,  Wendong.
■5021  ▼aThesis  (Ph.D.)--Iowa  State  University,  2025.
■520    ▼aThis  dissertation  consists  of  three  chapters  that  investigate  the  economic  and  environmental  dynamics  of  agricultural  decision-making  in  the  U.S.  Inner  Corn  Belt,  focusing  on  how  market  incentives,  policy  instruments,  and  land  ownership  structures  influence  land  use,  crop  choice,  and  sustainability  outcomes.In  "Dynamic  land  use  impact  of  farm  policy  changes  in  the  U.S.  Corn  Belt:  A  grid-level  analysis",  we  developed  a  multi-use  land  use  model  to  quantify  the  dynamic  effects  of  crop  prices,  nitrogen  fertilizer  costs,  and  crop  insurance  subsidies  on  cropland  allocation  using  high-resolution  field-level  data.  With  the  connection  to  the  ecological  model,  we  estimate  nitrous  oxide  (N2O)  emission  changes  induced  by  simulated  policy  shocks,  such  as  crop  and  fertilizer  price  changes  and  crop  insurance  subsidies  removal.  We  provided  additional  empirical  evidence  that  crop  rotation  significantly  influences  land  use  decisions,  showing  stronger  responses  on  the  rotational  margin  than  the  extensive  margin.  Soybean  prices  drive  corn-soybean  substitution  more  than  corn  prices  affect  corn  acreage.  Long-run  elasticities  exceed  short-run  ones,  supporting  partial  adjustment  behavior.  A  novel  and  replicable  risk  proxy  based  on  marginal  risk  premiums  was  developed,  providing  a  simple  and  transparent  way  to  measure  regional  crop-specific  risks  for  future  research.  While  soybean  expansion  shows  signs  of  adverse  selection,  no  such  evidence  is  found  for  corn.  Market-based  tools  like  carbon  pricing  through  corn  or  fertilizer  markets  effectively  reduce  emissions,  though  removing  subsidies  may  lower  fiscal  costs  at  the  risk  of  higher  environmental  harm.  We  provide  the  social  cost  estimates  of  the  nitrous  emission  changes  under  the  policy  shocks  for  carbon-related  policy  guidance.In  "Rootworm  corn  seed  disadoption:  Land  use  &  regional  welfare  analysis  in  the  Inner  Corn  Belt",  we  evaluate  the  regional  yield  and  economic  impacts  of  Bt  corn  disadoption  in  the  U.S..  Inner  Corn  Belt  during  the  declining  adoption  period.  Results  show  larger  yield  benefits  in  the  West  than  in  the  East,  with  diminished  gains  during  the  post-disadoption  period  (2014-2022).  The  larger  decline  in  yield  benefits  in  the  West  than  in  the  East  also  potentially  supports  the  role  played  by  rootworm  resistance.  We  further  link  these  yield  effects  to  the  land  use  model  from  the  previous  chapter  to  analyze  the  land  use  decisions,  revenue,  and  welfare  responses  to  the  simulated  yield  shocks.  The  results  indicate  that  welfare  differences  from  Bt  corn  disadoption  highlight  the  need  for  policy  efforts  to  prevent  resistance  and  preserve  trait  effectiveness.  Uniform  prices  mask  asymmetries:  the  East's  smaller  production  base  amplifies  revenue  gains,  while  the  West  absorbs  larger  yield-driven  losses.In  "Institutional  land  ownership  and  conservation  practice  adoption  in  the  U.S.  Midwest",  we  examine  the  role  of  institutional  farmland  ownership  in  shaping  conservation  behavior.  Leveraging  landowner  survey  data  from  Iowa  and  an  instrumental  variable  approach  using  capital  gains  tax  liability,  we  find  that  institutional  owners  are  significantly  more  likely  to  adopt  and  invest  in  no-till  and  cover  crops,  regarding  both  the  adoption  likelihood  and  intensity.  This  challenges  assumptions  that  they  prioritize  short-term  profits  over  long-term  sustainability,  and  points  out  several  potential  drivers  to  these  positive  effects:  the  presence  of  professional  farm  managers,  frequent  landowner  engagement  with  the  land,  more  access  to  conservation  information,  structured  transition  plans,  and  long-term  investment  motivations.
■590    ▼aSchool  code:  0097.
■650  4▼aAgriculture
■653    ▼aCover  crops
■653    ▼aCrop  rotation
■653    ▼aFarmland  tenure
■653    ▼aGenetically  engineered  corn
■653    ▼aLand  use
■690    ▼a0503
■690    ▼a0601
■690    ▼a0473
■690    ▼a0474
■71020▼aIowa  State  University▼bEconomics.
■7730  ▼tDissertations  Abstracts  International▼g87-01B.
■790    ▼a0097
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357145▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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