{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/121210"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/121210","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Attribution of phosphorus load in various watersheds in Illinois","abstract":"Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01","abstract_html":"Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01","abstract_has_math":false,"creators":["Kim, Daniel Chulgi"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Agricultural & Biological Engr","degree_department":null,"school":null,"contributors":["Bhattarai, Rabin","Kalita, Prasanta Kumar","McIsaac, Gregory F","Markus, Momcilo"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2023,"date_issued":"2023-08","date_published":"2023-08","updated_at":"2026-07-22T22:24:57Z","subjects":["Mann-kendall Test","Seasonal Kendall Test","Regional Kendall Test","Trend Analysis","Illinois River Basin","Sangamon River Basin","Indian Creek","Phosphorus","The Soil And Water Assessment Tool (swat)","Best Management Practices (bmps)"],"languages":["en","eng"],"rights":["Copyright 2023 Daniel Kim"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/121210","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Bhattarai, Rabin","Kalita, Prasanta Kumar","McIsaac, Gregory F","Markus, Momcilo"]},{"key":"dc:creator","label":"Author","values":["Kim, Daniel Chulgi"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2023-08","2023-07-09"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Agricultural & Biological Engr"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Mann-kendall Test","Seasonal Kendall Test","Regional Kendall Test","Trend Analysis","Illinois River Basin","Sangamon River Basin","Indian Creek","Phosphorus","The Soil And Water Assessment Tool (swat)","Best Management Practices (bmps)"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2023 Daniel Kim"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/121210"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01","The student, Daniel Kim, accepted the attached license on 2023-06-28 at 22:03.","The student, Daniel Kim, submitted this Dissertation for approval on 2023-06-28 at 22:14.","This Dissertation was approved for publication on 2023-07-09 at 17:35.","DSpace SAF Submission Ingestion Package generated from Vireo submission #19477 on 2023-12-04 at 17:30:33","The state of Illinois is one of the largest contributors of nutrient loads to the Mississippi-Atchafalaya River Basin (MARB). The purpose of this study is to understand phosphorus trends in the Illinois River Basin (IRB) and its sub-watersheds and to analyze the attribution of the trend. The total phosphorus (TP) flux in IRB at Valley City increased from 1995 to 2019 with a rate of +8472 kg P yr-1. This study suggests dissolved phosphorus (DP) load from point sources in the Sangamon River Basin, the increase of streamflow, and the legacy phosphorus in Lower IRB as reasons for the increasing TP load trend in the IRB. Regional TP yield trend of Sangamon River Basin (SRB) and Upper Sangamon River Basin (USRB) showed increasing trends with rates of 2.62 kg km-2 yr-1 and 1.39 kg km-2 yr-1. The potential impact of legacy phosphorus was insignificant on the overall TP yield trend in SRB. Phosphorus from the Sanitary District of Decatur (SDD) was critical in increasing TP yield in SRB. The rise in the number of industrial facilities and the change in industrial processes for soybean biorefinery seemed to be related to the increase in TP load in SRB at Oakford. The increased conservation reserve program (CRP) appeared to be related to the reduction in TSS and PP yield. The increase in CRP and the significant decrease in manure application due to a substantial reduction in livestock inventory likely resulted in a TP load decrease in Indian Creek. In recent years, the increase in precipitation might have resulted in a slight increase in TP load. The impact of BMPs on TP load was also evaluated with the SWAT model. The mixed application of filter strip and winter cover crop showed the highest efficiency in terms of TP load reduction among the BMP scenarios tested."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Attribution of phosphorus load in various watersheds in Illinois"]}]}],"canonical_facts":{"dc:contributor":["Bhattarai, Rabin","Kalita, Prasanta Kumar","McIsaac, Gregory F","Markus, Momcilo"],"dc:creator":["Kim, Daniel Chulgi"],"dc:date":["2023-08","2023-07-09"],"dc:description":["Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01","The student, Daniel Kim, accepted the attached license on 2023-06-28 at 22:03.","The student, Daniel Kim, submitted this Dissertation for approval on 2023-06-28 at 22:14.","This Dissertation was approved for publication on 2023-07-09 at 17:35.","DSpace SAF Submission Ingestion Package generated from Vireo submission #19477 on 2023-12-04 at 17:30:33","The state of Illinois is one of the largest contributors of nutrient loads to the Mississippi-Atchafalaya River Basin (MARB). The purpose of this study is to understand phosphorus trends in the Illinois River Basin (IRB) and its sub-watersheds and to analyze the attribution of the trend. The total phosphorus (TP) flux in IRB at Valley City increased from 1995 to 2019 with a rate of +8472 kg P yr-1. This study suggests dissolved phosphorus (DP) load from point sources in the Sangamon River Basin, the increase of streamflow, and the legacy phosphorus in Lower IRB as reasons for the increasing TP load trend in the IRB. Regional TP yield trend of Sangamon River Basin (SRB) and Upper Sangamon River Basin (USRB) showed increasing trends with rates of 2.62 kg km-2 yr-1 and 1.39 kg km-2 yr-1. The potential impact of legacy phosphorus was insignificant on the overall TP yield trend in SRB. Phosphorus from the Sanitary District of Decatur (SDD) was critical in increasing TP yield in SRB. The rise in the number of industrial facilities and the change in industrial processes for soybean biorefinery seemed to be related to the increase in TP load in SRB at Oakford. The increased conservation reserve program (CRP) appeared to be related to the reduction in TSS and PP yield. The increase in CRP and the significant decrease in manure application due to a substantial reduction in livestock inventory likely resulted in a TP load decrease in Indian Creek. In recent years, the increase in precipitation might have resulted in a slight increase in TP load. The impact of BMPs on TP load was also evaluated with the SWAT model. The mixed application of filter strip and winter cover crop showed the highest efficiency in terms of TP load reduction among the BMP scenarios tested."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/121210"],"dc:language":["en","eng"],"dc:rights":["Copyright 2023 Daniel Kim"],"dc:subject":["Mann-kendall Test","Seasonal Kendall Test","Regional Kendall Test","Trend Analysis","Illinois River Basin","Sangamon River Basin","Indian Creek","Phosphorus","The Soil And Water Assessment Tool (swat)","Best Management Practices (bmps)"],"dc:title":["Attribution of phosphorus load in various watersheds in Illinois"],"dc:type":["text"],"thesis:degree_discipline":["Agricultural & Biological Engr"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:57Z"}