兰州大学机构库
Exploring low-carbon mulching strategies for maize and wheat on-farm: Spatial responses, factors and mitigation potential
Wei, Huihui1; Zhang, Kaiping1; Chai, Ning1; Wang, Yue1; Li, Yuling1; Yang, Jianjun1; Harrison, Matthew Tom3; Liu, Ke3; Wan, Pingxing; Zhang, Wenjuan2; Sun, Guojun; Li, Zhansheng4; Zhang, Feng1,5
2024
Online publication date2023-10
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT   Impact Factor & Quartile
ISSN0048-9697 ; 1879-1026
EISSN1879-1026
Volume906
page numbers12
AbstractMulching strategies -including plastic film mulching (FM) and straw mulching (SM) -can enhance crop yields while affecting multiple greenhouse gas (GHG) fluxes. However, most of currently published site-based studies only focus on a certain gas, resulting in an inability to spatially integrated understanding of changes in agri-cultural global warming potential (GWP) and greenhouse gas intensity (GHGI) caused by mulching across China. Thus, we developed an optimal model considering crop type, meteorology, soil and management variables by four machine learning methods, namely support vector machine, multilayer perceptron, random forest, and gradient boosting machine (GBM). Then we mapped the relative changes in yield and GHG fluxes caused by mulching strategies. The GBM model had the best simulation capability for yield and GHGs in China. Our result showed that FM increased yield in maize (25 %) and wheat (19 %), while SM respectively increased by 14 % and 11 %. Among the relative changes due to mulching strategies, yield and N2O emissions were mainly influenced by soil fertility and soil properties, CH4 uptakes and CO2 emissions were more affected by environmental factors. GWP in maize and wheat average increased by 40 % under FM, while SM decreased GWP by 14 % and 2 %, respectively. Besides, FM average increased GHGI in maize and wheat by 17 % and 9 %, and SM decreased GHGI by 22 % and 12 %, respectively. Spatially, FM reduced maize GWP on 19 % of cropland, while SM reduced maize and wheat GWP on 71 % and 64 % of cropland, respectively. Soil pH was significantly correlated with Delta GHGI in maize and wheat. Our analysis not only estimated for the first time the spatial effects of mulching strategies across China, but also systematically analyzes the agricultural carbon emission mitigation potential of mulching strategies, which promote the development of low-carbon agriculture based on locally appropriate mulching strategies.
KeywordMulching strategies Low-carbon agriculture Global warming potential Greenhouse gas emissions intensity Gradient boosting machine Soil respiration
PublisherELSEVIER
DOI10.1016/j.scitotenv.2023.167441
Indexed BySCIE
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:001090249700001
Original Document TypeArticle
PMID 37774862
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/568469
Collection兰州大学
Corresponding AuthorZhang, Feng
Affiliation
1.Lanzhou Univ, Sch Ecol, State Key Lab Herbage Improvement & Grassland Agro, Lanzhou 730000, Gansu, Peoples R China;
2.Univ Tasmania, Tasmanian Inst Agr, Newnham Dr, Launceston, Tas 7428, Australia;
3.Inst Qinghai Prov Nat Resources Survey & Monitorin, Xining 810000, Qinghai, Peoples R China;
4.Nanjing Agr Univ, Sanya Inst Nanjing Agr Univ, Asia Hub, Sanya 572000, Hainan, Peoples R China;
5.Lanzhou Univ, Sch Ecol, State Key Lab Herbage Improvement & Grassland Agro, 222,Tianshui South Rd, Lanzhou 730000, Gansu, Peoples R China
Recommended Citation
GB/T 7714
Wei, Huihui,Zhang, Kaiping,Chai, Ning,et al. Exploring low-carbon mulching strategies for maize and wheat on-farm: Spatial responses, factors and mitigation potential[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,906.
APA Wei, Huihui.,Zhang, Kaiping.,Chai, Ning.,Wang, Yue.,Li, Yuling.,...&Zhang, Feng.(2024).Exploring low-carbon mulching strategies for maize and wheat on-farm: Spatial responses, factors and mitigation potential.SCIENCE OF THE TOTAL ENVIRONMENT,906.
MLA Wei, Huihui,et al."Exploring low-carbon mulching strategies for maize and wheat on-farm: Spatial responses, factors and mitigation potential".SCIENCE OF THE TOTAL ENVIRONMENT 906(2024).
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