Subsoiling reduces CO2 concentrations in soil profile of winter wheat – summer maize rotation ecosystem in the North China Plain: a strategy to achieve carbon neutrality in farmland

IF 2.3 4区农林科学 Q1 AGRONOMY

Archives of Agronomy and Soil Science Pub Date : 2023-02-13 DOI:10.1080/03650340.2023.2175819

Tingting Zhang, Jichao Cui, Xiaohan Duan, D. Cui, Xinkun Liu, Qian-qian Feng, Ying Shen, Huifang Han, T. Ning

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引用次数: 0

Abstract

ABSTRACT Reducing CO2 emissions from agricultural soils is a key component of the overall carbon reduction strategy. The closed chamber method was used to continuously monitor CO2 concentration in soil profiles of winter wheat-summer maize rotation fields in the North China Plain (NCP) during 2015–2017. Additionally, we evaluated the contribution of different tillage methods (Rotary tillage (RT), Subsoiling (SS), No- tillage (ZT), and conventional tillage (CT) in combination with Straw return (s) and straw removal (0)) to reducing soil CO2 emission. The results showed that the concentration of CO2 increased with the soil depth and peaked at the 150 cm layer. The trend of CO2 concentration in soil profiles under different tillage treatments was CTS > RTS > ZTS > SSS, and the average concentration in maize season was higher than that in wheat season. In addition, soil moisture and temperature in the 0–10 cm soil layer were significantly correlated with soil CO2 concentrations. Thus, our results highlight that the SSs plays a critical role in moderating soil CO2 emissions. This process merits further study to effectively regulate soil CO2 release and achieve carbon neutrality with less carbon emissions in farmland ecosystems.

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深松降低华北平原冬小麦-夏玉米轮作生态系统土壤CO2浓度：实现农田碳中和的策略

摘要减少农业土壤中的二氧化碳排放是整体碳减排战略的关键组成部分。采用密闭室法对2015-2017年华北平原冬小麦-夏玉米轮作田土壤剖面中的CO2浓度进行了连续监测。此外，我们还评估了不同耕作方法（旋耕（RT）、深松（SS）、免耕（ZT）和传统耕作（CT）结合秸秆还田和秸秆清除（0））对减少土壤二氧化碳排放的贡献。结果表明，CO2浓度随土壤深度的增加而增加，在150cm土层达到峰值。不同耕作处理下土壤剖面CO2浓度的变化趋势为CTS＞RTS＞ZTS＞SSS，玉米季节的平均浓度高于小麦季节。此外，0–10 cm土层的土壤湿度和温度与土壤CO2浓度显著相关。因此，我们的研究结果强调，SS在调节土壤CO2排放方面发挥着关键作用。这一过程值得进一步研究，以有效调节土壤CO2排放，实现农田生态系统中碳排放较少的碳中和。

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来源期刊

Archives of Agronomy and Soil Science AGRONOMY-SOIL SCIENCE

CiteScore

5.50

自引率

4.20%

发文量

107

期刊介绍： rchives of Agronomy and Soil Science is a well-established journal that has been in publication for over fifty years. The Journal publishes papers over the entire range of agronomy and soil science. Manuscripts involved in developing and testing hypotheses to understand casual relationships in the following areas: plant nutrition fertilizers manure soil tillage soil biotechnology and ecophysiology amelioration irrigation and drainage plant production on arable and grass land agroclimatology landscape formation and environmental management in rural regions management of natural and created wetland ecosystems bio-geochemical processes soil-plant-microbe interactions and rhizosphere processes soil morphology, classification, monitoring, heterogeneity and scales reuse of waste waters and biosolids of agri-industrial origin in soil are especially encouraged. As well as original contributions, the Journal also publishes current reviews.