文献类型：期刊文献

英文题名：Effects of agricultural activities on energy-carbon-water nexus of the Qinghai-Tibet Plateau

作者：Yu, Lu[1] Liu, Shiliang[1] Wang, Fangfang[1] Liu, Yixuan[1] Li, Mingqi[1] Wang, Qingbo[1] Dong, Shikui[2] Zhao, Wenwu[3] Tran, Lam-Son Phan[4] Sun, Yongxiu[1] Li, Weiqiang[5] Dong, Yuhong[6] Beazley, Robert[7] Qian, Haotian[1]

第一作者：Yu, Lu

通信作者：Liu, SL[1]

机构：[1]Beijing Normal Univ, Sch Environm, State Key Lab Water Environm Simulat, Beijing, Peoples R China;[2]Beijing Forestry Univ, Sch Grassland Sci, Beijing 100083, Peoples R China;[3]Beijing Normal Univ, Fac Geog Sci, Beijing 100875, Peoples R China;[4]Texas Tech Univ, Inst Genom Crop Abiot Stress Tolerance, Dept Plant & Soil Sci, Lubbock, TX 79409 USA;[5]Henan Univ, Sch Life Sci, State Key Lab Cotton Biol, Henan Joint Int Lab Crop Multiom Res, 85 Minglun St, Kaifeng 475001, Peoples R China;[6]Chinese Acad Forestry, Res Inst Forestry, Key Lab Tree Breeding & Cultivat, State Forestry Adm, Beijing 100091, Peoples R China;[7]Coll Agr & Life Sci, Dept Nat Resources, Fernow Hall 302, Ithaca, NY 14853 USA

年份：2022

卷号：331

外文期刊名：JOURNAL OF CLEANER PRODUCTION

收录：;EI(收录号：20215011314572);Scopus(收录号：2-s2.0-85120792730);WOS:【SCI-EXPANDED(收录号:WOS:000770865900003)】；

基金：Acknowledgments The work was supported by the second scientific expedition to the Qinghai-Tibet Plateau (No. 2019QZKK0405-05) , National Natural Sci-ences Foundation of China (No. 41571173) and National Key Research and Development Project (No. 2016YFC0502103) .

语种：英文

外文关键词：Energy-carbon-water nexus; Agricultural production; Emergy analysis; Carbon footprint; Water footprint; Qinghai-tibet plateau

摘要：Energy, carbon, water and their interactions determine agricultural production efficiency and sustainability. On the Qinghai-Tibet Plateau (QTP), agricultural activities threaten the ecological security of the region, and agriculture itself is susceptible to climate change. In this study, we applied an energy-carbon-water nexus framework to assess the carbon emissions, water utilization, and energy flow, and their links with agricultural production on the QTP, using emergy analysis, footprint analysis (carbon footprint and water footprint) and a coupling model. The results showed that agricultural activities on the QTP released 2.17 x 1010 kgCO2-eq and absorbed 6.00 x 1010 kgCO2-eq, using 3.24 x 1022 sej of emergy and 8.19 x 109 m3 of water in 2018. Meanwhile, the energy-carbon-water nexus of agricultural production on the QTP was imbalanced, and the environmental footprint revealed large spatial heterogeneity at county scale. The coupling interaction among the energy-carbon-water nexus in agricultural production was investigated based on the coupling coordination model. Five categories of coupling interaction were identified by the degree of coordination. The largest emitter was agricultural input, especially electricity and nitrogen fertilizer, accounting for 24% and 7% of the total on average, respectively. With regard to emergy flows, renewable organic resources, accounted for 47%, making them the predominant in emergy inputs. The green water footprint (water from natural rainfall) at 51% was higher than the blue water footprint (water from irrigation) at 49%. More measurements to reduce carbon emission and improve the efficiency of energy usage and water usage are needed, such as optimizing planting patterns and structures, promoting cleaner energy, improving the efficiency of agrochemical use and proposing reasonable spatial planning for regional ecological development. Our findings provide a systematic reference for energy-carbon-water nexus analysis and sustainable agricultural development policy for decision-makers on the QTP.