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Influence of straw mulch and no-tillage on soil respiration, its components and economic benefit in a Chinese wheat-maize cropping system

文献类型：期刊论文

作者Li, Zhaoxin1,3,4; Zhang, Qiuying5; Qiao, Yunfeng1,3,4; Du, Kun1,3,4; Li, Zhao1,3,4; Tian, Chao1,3,4; Zhu, Nong1,3,4; Leng, Peifang1,3,4; Yue, Zewei1,3,4; Cheng, Hefa2
刊名GLOBAL ECOLOGY AND CONSERVATION
出版日期2022-04-01
卷号34页码:14
关键词Straw mulch No-tillage Soil respiration Heterotrophic respiration Autotrophic respiration Economic benefit
DOI10.1016/j.gecco.2022.e02013
通讯作者Zhang, Qiuying(zhangqy@craes.org.cn) ; Li, Fadong(lifadong@igsnrr.ac.cn)
英文摘要Optimizing economic benefit while reducing soil CO2 emissions in cropping systems has become the focus of agricultural study. We assessed the influence of short-term straw mulch and no-tillage on soil respiration (Rs), heterotrophic respiration (Rh), and autotrophic respiration (Ra), as well as economic benefit, in a traditional Chinese winter-wheat and summer-maize rotation system. Combinations of four treatments were tested: NS (no straw), SM (straw mulch), CT (conventional tillage) and NT (no-tillage). For wheat, SM significantly increased Rs in 2019 but significantly decreased Rs in 2020 relative to NS. NT significantly decreased Rs by 5.8% compared to CT from 2019 to 2020. For maize, during all three annual cycles, SM increased Rs relative to NS. NT increased Rs in 2018 with respect to CT but decreased it in 2019 and 2020. From the perspective of annual Rs both wheat and maize, SM increased Rs by 34.8%, 19.8%, and 18.8% in 2018, 2019, and 2020, respectively. NT increased Rs by 4.9%, -1.6%, and -0.7% in 2018, 2019, and 2020, respectively. The lowest annual Rs occurred for SM+NT in 2020. Relative to NS and CT, SM and NT promoted Rh but inhibited Ra for wheat during 2019 and 2020. For maize, SM increased Rh and suppressed Ra while NT had no significant effect on Rh and suppressed Ra. Therefore, SM increased Rs by promoting Rh, while NT decreased Rs by inhibiting Ra. In all treatments, Rh averaged 1.82-3.36 times higher than Ra. Soil temperature had a greater influence on temporal variations in soil respiration than soil moisture. Averaged from 2018 to 2020, the annual economic benefit was increased by 11.7% and 15.3% in SM and NT than NS and CT, respectively. Our results suggest that straw mulch and no-tillage should be promoted as an environment-friendly agroecosystem management practice for wheat and maize, as these practices can achieve a balance between improving economic benefit and reducing soil CO2 emissions, contributing to the mitigation of climate change and the early achievement of carbon neutrality goals.
WOS关键词GREENHOUSE-GAS EMISSIONS ; ORGANIC-CARBON ; HETEROTROPHIC RESPIRATION ; CO2 EMISSION ; RICE STRAW ; SHORT-TERM ; NITROGEN-FERTILIZATION ; ECOSYSTEM RESPIRATION ; MICROBIAL COMMUNITY ; TEMPERATURE
资助项目National Natural Science Foundation of China[41771292] ; National Natural Science Foundation of China[42007155] ; National Natural Science Foundation of China[U1906219] ; National Natural Science Foundation of China[U2006212]
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000748714000004
出版者ELSEVIER
资助机构National Natural Science Foundation of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/170249]  
专题中国科学院地理科学与资源研究所
通讯作者Zhang, Qiuying; Li, Fadong
作者单位1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
2.Peking Univ, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, 11 Datun Rd, Beijing 100101, Peoples R China
4.Minist Sci & Technol, Shandong Yucheng Agroecosyst Natl Observat Res St, Yucheng, Peoples R China
5.Chinese Res Inst Environm Sci, 8 Dayangfang Rd, Beijing 100012, Peoples R China
推荐引用方式
GB/T 7714		 Li, Zhaoxin,Zhang, Qiuying,Qiao, Yunfeng,et al. Influence of straw mulch and no-tillage on soil respiration, its components and economic benefit in a Chinese wheat-maize cropping system[J]. GLOBAL ECOLOGY AND CONSERVATION,2022,34:14.
APA Li, Zhaoxin.,Zhang, Qiuying.,Qiao, Yunfeng.,Du, Kun.,Li, Zhao.,...&Li, Fadong.(2022).Influence of straw mulch and no-tillage on soil respiration, its components and economic benefit in a Chinese wheat-maize cropping system.GLOBAL ECOLOGY AND CONSERVATION,34,14.
MLA Li, Zhaoxin,et al."Influence of straw mulch and no-tillage on soil respiration, its components and economic benefit in a Chinese wheat-maize cropping system".GLOBAL ECOLOGY AND CONSERVATION 34(2022):14.

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来源：地理科学与资源研究所

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