{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,2]],"date-time":"2026-03-02T15:32:53Z","timestamp":1772465573308,"version":"3.50.1"},"reference-count":66,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T00:00:00Z","timestamp":1772236800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004543","name":"China Scholarship Council","doi-asserted-by":"publisher","award":["202306170513"],"award-info":[{"award-number":["202306170513"]}],"id":[{"id":"10.13039\/501100004543","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Humanities and Social Science Fund of Ministry of Education","award":["24YJA790009"],"award-info":[{"award-number":["24YJA790009"]}]},{"name":"Social Science Research Project of the Education Department of Jilin Province","award":["JJKH20241360SK"],"award-info":[{"award-number":["JJKH20241360SK"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Systems"],"abstract":"<jats:p>The integrated crop\u2013livestock farming model not only enhances resource utilization efficiency and reduces environmental pollution but also serves as a vital pathway for promoting sustainable agricultural development. System dynamics models enable in-depth analysis of dynamic system changes. Therefore, in this study, we constructed a comprehensive system dynamics model for the combination of farming and raising in Jilin Province, and used Vensim-PLE software(Version 6.3) to simulate and predict the dynamic changes of the agricultural structure and the future development trend based on the data of the planting and raising industry from 2006 to 2021. The results of the study show that: (1) It is expected that by 2035, the grain crop production, cash crop production, hog and beef cattle output, as well as the utilization of straw and livestock and poultry manure in Jilin Province will increase significantly. And the livestock and poultry manure load warning value reaches 0.35, which does not pose a threat to the environment. (2) By setting the simulation structure optimization analysis, it is found that the integrated crop-livestock systems performs the best in terms of economic, social, ecological and environmental benefits. (3) In 2035, Jilin Province should control the total crop planting area within 7250 thousand hectares, the number of hog output should not exceed 25 million, and the number of beef cattle slaughtered should not exceed 4.25 million, so as to ensure that the early warning value of livestock and poultry fecal matter loading is lower than 0.4, and to achieve the balance of farming and maximize economic benefits. Finally, this paper proposes policy recommendations to optimize crop structures, develop precision farming and aquaculture technologies, establish resource recycling projects, and strengthen policy support and technology promotion.<\/jats:p>","DOI":"10.3390\/systems14030254","type":"journal-article","created":{"date-parts":[[2026,3,2]],"date-time":"2026-03-02T14:06:56Z","timestamp":1772460416000},"page":"254","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Research on Simulation and Structural Optimization of Integrated Crop\u2013Livestock Systems in Jilin Province"],"prefix":"10.3390","volume":"14","author":[{"given":"Yujie","family":"Xia","sequence":"first","affiliation":[{"name":"College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaoyu","family":"Lv","sequence":"additional","affiliation":[{"name":"College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3470-0609","authenticated-orcid":false,"given":"Shuang","family":"Xu","sequence":"additional","affiliation":[{"name":"College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0625-8929","authenticated-orcid":false,"given":"Hongpeng","family":"Guo","sequence":"additional","affiliation":[{"name":"College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2026,2,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Rampa, A., Gadanakis, Y., and Rose, G. (2020). Land Reform in the Era of Global Warming\u2014Can Land Reforms Help Agriculture Be Climate-Smart?. Land, 9.","DOI":"10.3390\/land9120471"},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Li, X., and Liu, G. (2026). Dynamics and Determinants of China\u2019s Inter-Provincial Staple Food Flow Resilience: A Network Perspective. Systems, 14.","DOI":"10.3390\/systems14010017"},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Rankoana, S. (2016). Perceptions of Climate Change and the Potential for Adaptation in a Rural Community in Limpopo Province, South Africa. Sustainability, 8.","DOI":"10.3390\/su8080672"},{"key":"ref_4","first-page":"518","article-title":"Crop-Livestock Integration for Sustainable Agriculture in China: The History of State Policy Goals, Reform Opportunities and Institutional Constraints","volume":"10","author":"Feng","year":"2023","journal-title":"Front. Agric. Sci. Eng."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"180033","DOI":"10.1016\/j.scitotenv.2025.180033","article-title":"How temperature changes affect risk attitudes: Evidence from 1,708 farming households in China","volume":"994","author":"Xia","year":"2025","journal-title":"Sci. Total Environ."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"24","DOI":"10.5751\/ES-11412-250124","article-title":"Drivers of decoupling and recoupling of crop and livestock systems at farm and territorial scales","volume":"25","author":"Garrett","year":"2020","journal-title":"Ecol. Soc."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"48","DOI":"10.1038\/s41893-020-00596-0","article-title":"Decoupling livestock and crop production at the household level in China","volume":"4","author":"Jin","year":"2021","journal-title":"Nat. Sustain."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"54","DOI":"10.1007\/s13593-022-00782-8","article-title":"Work organization as a barrier to crop-livestock integration practices: A case study in Guadeloupe","volume":"42","author":"Fanchone","year":"2022","journal-title":"Agron. Sustain. Dev."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"5","DOI":"10.1007\/s10705-016-9815-9","article-title":"Designing crop\u2013livestock integration at different levels: Toward new agroecological models?","volume":"108","author":"Ryschawy","year":"2017","journal-title":"Nutr. Cycl. Agroecosyst."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"514","DOI":"10.1016\/j.anifeedsci.2011.04.036","article-title":"Manure management: Implications for greenhouse gas emissions","volume":"166\u2013167","author":"Chadwick","year":"2011","journal-title":"Anim. Feed Sci. Technol."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"7450","DOI":"10.1021\/acs.est.6b06470","article-title":"How Does Recycling of Livestock Manure in Agroecosystems Affect Crop Productivity, Reactive Nitrogen Losses, and Soil Carbon Balance?","volume":"51","author":"Xia","year":"2017","journal-title":"Environ. Sci. Technol."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"20882","DOI":"10.1073\/pnas.1012878108","article-title":"Exploring global changes in nitrogen and phosphorus cycles in agriculture induced by livestock production over the 1900-2050 period","volume":"110","author":"Bouwman","year":"2011","journal-title":"Proc. Natl. Acad. Sci. USA"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"21","DOI":"10.1016\/j.eja.2013.10.007","article-title":"Exploring integrated crop-livestock systems in different ecoregions of the United States","volume":"57","author":"Sulc","year":"2014","journal-title":"Eur. J. Agron."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"631","DOI":"10.1017\/S1742170519000280","article-title":"Assessing the economic viability of integrated crop\u2212livestock systems in Mato Grosso, Brazil","volume":"35","author":"Kamoi","year":"2020","journal-title":"Renew. Agric. Food Syst."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"6013","DOI":"10.1016\/j.rser.2012.06.011","article-title":"Promotion of biofuel consumption in the transport sector: An EU-27 perspective","volume":"16","author":"Cansino","year":"2012","journal-title":"Renew. Sustain. Energy Rev."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"13409","DOI":"10.1021\/acs.est.6b03348","article-title":"Nitrogen, Phosphorus, and Potassium Flows through the Manure Management Chain in China","volume":"50","author":"Bai","year":"2016","journal-title":"Environ. Sci. Technol."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"102","DOI":"10.1038\/s43016-022-00466-2","article-title":"Recoupling livestock and crops","volume":"3","author":"Gu","year":"2022","journal-title":"Nat. Food"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"106891","DOI":"10.1016\/j.eiar.2022.106891","article-title":"The impact of climate change on the efficiency of agricultural production in the world\u2019s main agricultural regions","volume":"97","author":"Guo","year":"2022","journal-title":"Environ. Impact Assess. Rev."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"e25677","DOI":"10.1016\/j.heliyon.2024.e25677","article-title":"Environmental regulations and agricultural carbon emissions efficiency: Evidence from rural China","volume":"10","author":"Xia","year":"2024","journal-title":"Heliyon"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"516","DOI":"10.1038\/s41586-019-1001-1","article-title":"Managing nitrogen to restore water quality in China","volume":"567","author":"Yu","year":"2019","journal-title":"Nature"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"108192","DOI":"10.1016\/j.agee.2022.108192","article-title":"Improving crop-livestock integration in China using numerical experiments at catchment and regional scales","volume":"341","author":"Chen","year":"2023","journal-title":"Agric. Ecosyst. Environ."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"1217","DOI":"10.1007\/s10113-016-1101-5","article-title":"Nitrogen use efficiencies in Chinese agricultural systems and implications for food security and environmental protection","volume":"17","author":"Gu","year":"2017","journal-title":"Reg. Environ. Change"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"134377","DOI":"10.1016\/j.jclepro.2022.134377","article-title":"GHG emissions of straw treatments in rural China and scenario simulation based on life cycle perspective","volume":"377","author":"Xu","year":"2022","journal-title":"J. Clean. Prod."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"105301","DOI":"10.1016\/j.resconrec.2020.105301","article-title":"Replacing synthetic fertilizer by manure requires adjusted technology and incentives: A farm survey across China","volume":"168","author":"Zhang","year":"2021","journal-title":"Resour. Conserv. Recycl."},{"key":"ref_25","doi-asserted-by":"crossref","unstructured":"Guo, H., Xia, Y., Pan, C., Lei, Q., and Pan, H. (2022). Analysis in the Influencing Factors of Climate-Responsive Behaviors of Maize Growers: Evidence from China. Int. J. Environ. Res. Public Health, 19.","DOI":"10.3390\/ijerph19074274"},{"key":"ref_26","doi-asserted-by":"crossref","unstructured":"Khangura, R., Ferris, D., Wagg, C., and Bowyer, J. (2023). Regenerative Agriculture-A Literature Review on the Practices and Mechanisms Used to Improve Soil Health. Sustainability, 15.","DOI":"10.3390\/su15032338"},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Mabhaudhi, T., Chibarabada, T.P., and Sikka, A. (2023). Status of integrated crop-livestock research in the mixed farming systems of the Global South: A scoping study. Front. Sustain. Food Syst., 7.","DOI":"10.3389\/fsufs.2023.1241675"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"162880","DOI":"10.1016\/j.scitotenv.2023.162880","article-title":"Emergy synthesis of decoupling and recoupling crop-livestock systems under unified system boundary and modified indices","volume":"877","author":"Tan","year":"2023","journal-title":"Sci. Total Environ."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"15","DOI":"10.1186\/s40538-020-00182-8","article-title":"Role of biochar in promoting circular economy in the agriculture sector. Part 1: A review of the biochar roles in soil N, P and K cycles","volume":"7","author":"Jindo","year":"2020","journal-title":"Chem. Biol. Technol. Agric."},{"key":"ref_30","doi-asserted-by":"crossref","unstructured":"Abbas, F., Hammad, H.M., Anwar, F., Farooque, A.A., Jawad, R., Bakhat, H.F., Naeem, M.A., Ahmad, S., and Qaisrani, S.A. (2021). Transforming a Valuable Bioresource to Biochar, Its Environmental Importance, and Potential Applications in Boosting Circular Bioeconomy While Promoting Sustainable Agriculture. Sustainability, 13.","DOI":"10.3390\/su13052599"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"108447","DOI":"10.1016\/j.fcr.2022.108447","article-title":"Does straw return increase crop yield in the wheat-maize cropping system in China? A meta-analysis","volume":"279","author":"Islam","year":"2022","journal-title":"Field Crops Res."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"261","DOI":"10.1016\/j.agee.2005.08.028","article-title":"Nitrogen cycling efficiencies through resource-poor African crop\u2013livestock systems","volume":"112","author":"Rufino","year":"2006","journal-title":"Agric. Ecosyst. Environ."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"175","DOI":"10.15302\/J-FASE-2020362","article-title":"Sustainable development of crop-livestock farms in Africa","volume":"8","author":"Rufino","year":"2021","journal-title":"Front. Agric. Sci. Eng."},{"key":"ref_34","doi-asserted-by":"crossref","unstructured":"Ibrahim, L.A., Abu-Hashim, M., Shaghaleh, H., Elsadek, E., Hamad, A.A.A., and Alhaj Hamoud, Y. (2023). A Comprehensive Review of the Multiple Uses of Water in Aquaculture-Integrated Agriculture Based on International and National Experiences. Water, 15.","DOI":"10.3390\/w15020367"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"103554","DOI":"10.1016\/j.agsy.2022.103554","article-title":"Developing integrated rice-animal farming based on climate and farmers choices","volume":"204","author":"Yifan","year":"2023","journal-title":"Agric. Syst."},{"key":"ref_36","doi-asserted-by":"crossref","unstructured":"Yang, G.T., Li, J., Liu, Z., Zhang, Y.T., Xu, X.B., Zhang, H., and Xu, Y. (2022). Research Trends in Crop-Livestock Systems: A Bibliometric Review. Int. J. Environ. Res. Public Health, 19.","DOI":"10.3390\/ijerph19148563"},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"28","DOI":"10.1007\/s40974-022-00262-5","article-title":"Environmental accounting for croplands, livestock husbandry, and integrated systems based on emergetic indicators","volume":"8","author":"Golshani","year":"2023","journal-title":"Energy Ecol. Environ."},{"key":"ref_38","first-page":"68","article-title":"Assessment of Production Efficiency in the \u201cSilage Corn + Livestock Farming\u201d Integrated Model Using the Energy Value and Improved DEA-EBM Approach: A Case Study of Sichuan Province\u2019s \u201cGrain-to-Feed\u201d Silage Corn Demonstration Zone","volume":"33","author":"Peng","year":"2019","journal-title":"Resour. Environ. Arid Reg."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"130193","DOI":"10.1016\/j.jclepro.2021.130193","article-title":"Agriculture carbon-emission reduction and changing factors behind agricultural eco-efficiency growth in China","volume":"334","author":"Yang","year":"2022","journal-title":"J. Clean. Prod."},{"key":"ref_40","doi-asserted-by":"crossref","unstructured":"Molina-Moreno, V., Carlos Leyva-Diaz, J., Javier Llorens-Montes, F., and Joaquin Cortes-Garcia, F. (2017). Design of Indicators of Circular Economy as Instruments for the Evaluation of Sustainability and Efficiency in Wastewater from Pig Farming Industry. Water, 9.","DOI":"10.3390\/w9090653"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"52","DOI":"10.1016\/j.spc.2022.01.025","article-title":"Assessment of social aspects across Europe resulting from the insertion of technologies for nutrient recovery and recycling in agriculture","volume":"31","author":"Andrade","year":"2022","journal-title":"Sustain. Prod. Consum."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"112900","DOI":"10.1016\/j.jenvman.2021.112900","article-title":"Environmental impacts of a rice-beef-biogas integrated system in the Mekong Delta, Vietnam evaluated by life cycle assessment","volume":"294","author":"Ogino","year":"2021","journal-title":"J. Environ. Manag."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"81","DOI":"10.1016\/j.jclepro.2017.12.262","article-title":"Greenhouse gas emissions related to biodiesel from traditional soybean farming compared to integrated crop-livestock systems","volume":"179","author":"Bungenstab","year":"2018","journal-title":"J. Clean. Prod."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"240","DOI":"10.1016\/j.agsy.2016.05.014","article-title":"Brief history of agricultural systems modeling","volume":"155","author":"Jones","year":"2017","journal-title":"Agric. Syst."},{"key":"ref_45","first-page":"146","article-title":"Simulation and Optimization of Agricultural Structure in Zhucheng City Based on the SD Model","volume":"40","author":"Mo","year":"2019","journal-title":"Agric. Resour. Reg. Plan. China"},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"149","DOI":"10.12911\/22998993\/147252","article-title":"Effect of Organic Manure and Plant Growth Promoting Microbes on Yield, Quality and Essential Oil Constituents of Fennel Bulb (Foeniculum vulgare Mill.)","volume":"23","author":"Nada","year":"2022","journal-title":"J. Ecol. Eng."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1016\/j.envdev.2014.12.002","article-title":"Boosting circular economy and closing the loop in agriculture: Case study of a small-scale pyrolysis\u2013biochar based system integrated in an olive farm in symbiosis with an olive mill","volume":"14","author":"Zabaniotou","year":"2015","journal-title":"Environ. Dev."},{"key":"ref_48","first-page":"48","article-title":"Study on the Income Effects of Family Farms Under the Integrated Crop-Livestock Model: A Case Study in Anhui Province","volume":"23","author":"Lu","year":"2021","journal-title":"J. Inn. Mong. Agric. Univ."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"220","DOI":"10.1016\/j.landusepol.2018.12.010","article-title":"Farming systems and productivity gaps: Opportunities for improving smallholder performance in the Forest-Savannah transition zone of Ghana","volume":"82","author":"Villano","year":"2019","journal-title":"Land Use Policy"},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"167","DOI":"10.1016\/j.agsy.2014.10.015","article-title":"Ecological recycling agriculture can reduce inorganic nitrogen losses\u2014Model results from three Finnish catchments","volume":"133","author":"Granlund","year":"2014","journal-title":"Agric. Syst."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"737","DOI":"10.3390\/land4030737","article-title":"Ecological Recycling Agriculture to Enhance Agro-Ecosystem Services in the Baltic Sea Region: Guidelines for Implementation","volume":"4","author":"Reckling","year":"2015","journal-title":"Land"},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"6","DOI":"10.1016\/j.agsy.2014.05.009","article-title":"Crop residue management and soil health: A systems analysis","volume":"134","author":"Turmel","year":"2015","journal-title":"Agric. Syst."},{"key":"ref_53","first-page":"34","article-title":"Research on the Environmental Carrying Capacity of Livestock and Poultry Farming Based on Integrated Crop-Livestock Systems: A Case Study of Shulan City","volume":"41","author":"Huang","year":"2020","journal-title":"Agric. Resour. Reg. Plan. China"},{"key":"ref_54","doi-asserted-by":"crossref","unstructured":"de Carvalho, A.M., Resende dos Santos, D.C., Gerosa Ramos, M.L., Marchao, R.L., Vilela, L., de Sousa, T.R., Malaquias, J.V., Martins de Araujo Goncalves, A.D., Coser, T.R., and de Oliveira, A.D. (2022). Nitrous Oxide Emissions from a Long-Term Integrated Crop-Livestock System with Two Levels of P and K Fertilization. Land, 11.","DOI":"10.3390\/land11091535"},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"106798","DOI":"10.1016\/j.isci.2023.106798","article-title":"Coupling of crop and livestock production can reduce the agricultural GHG emission from smallholder farms","volume":"26","author":"Xu","year":"2023","journal-title":"Iscience"},{"key":"ref_56","unstructured":"The Editorial Board and the Editorial Department of \u201cJilin Statistical Yearbook 2023\u201d (2024). Jilin Statistical Yearbook 2023, Changchun Audio-Video Electronic Press."},{"key":"ref_57","first-page":"128","article-title":"Distribution Characteristics of Livestock Manure in Jilin Province and Environmental Carrying Capacity Early Warning Analysis","volume":"48","author":"Wang","year":"2023","journal-title":"Northeast Agric. Sci."},{"key":"ref_58","first-page":"140","article-title":"Research on the Environmental Carrying Capacity of Livestock and Poultry Breeding in Jilin Province Based on the Balance of Crop and Livestock Breeding","volume":"7","author":"Wang","year":"2022","journal-title":"China Feed"},{"key":"ref_59","first-page":"37","article-title":"Industrial Dynamics: A Major Breakthrough for Decision Makers","volume":"36","author":"Forrester","year":"1958","journal-title":"Harv. Bus. Rev."},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"168","DOI":"10.1016\/j.energy.2009.09.007","article-title":"Scenarios of China\u2019s oil consumption per capita (OCPC) using a hybrid Factor Decomposition-System Dynamics (SD) simulation","volume":"35","author":"Tao","year":"2010","journal-title":"Energy"},{"key":"ref_61","first-page":"192","article-title":"The impact of integrated breeding and farming on reducing emissions and increasing efficiency in meat sheep farming","volume":"29","author":"Wang","year":"2024","journal-title":"J. China Agric. Univ."},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"108874","DOI":"10.1016\/j.ecolind.2022.108874","article-title":"Comprehensive simulation of resources and environment carrying capacity for urban agglomeration: A system dynamics approach","volume":"138","author":"Bao","year":"2022","journal-title":"Ecol. Indic."},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"111513","DOI":"10.1016\/j.ecolind.2023.111513","article-title":"Simulating and predicting the development trends of the water\u2013energy\u2013food\u2013ecology system in Henan Province, China","volume":"158","author":"Ling","year":"2024","journal-title":"Ecol. Indic."},{"key":"ref_64","first-page":"58","article-title":"Evaluation of Straw Resources from Major Crops in Jilin Province and Analysis of Their Energy Utilization","volume":"35","author":"Liu","year":"2010","journal-title":"Jilin Agric. Sci."},{"key":"ref_65","first-page":"122","article-title":"Analysis of Spatial Distribution Characteristics and Biogas Potential of Major Crop Straws in Jilin Province","volume":"24","author":"Zhang","year":"2023","journal-title":"Mod. Agric. Sci. Technol."},{"key":"ref_66","first-page":"204","article-title":"Estimation and Early Warning Analysis of Livestock Manure Application Rates on Cultivated Landin Jilin Province","volume":"45","author":"Che","year":"2023","journal-title":"J. Jilin Agric. Univ."}],"container-title":["Systems"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2079-8954\/14\/3\/254\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,3,2]],"date-time":"2026-03-02T14:37:23Z","timestamp":1772462243000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2079-8954\/14\/3\/254"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,2,28]]},"references-count":66,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2026,3]]}},"alternative-id":["systems14030254"],"URL":"https:\/\/doi.org\/10.3390\/systems14030254","relation":{},"ISSN":["2079-8954"],"issn-type":[{"value":"2079-8954","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,2,28]]}}}