Effect of Straw Retention on Crop Yield, Soil Properties, Water Use Efficiency and Greenhouse Gas Emission in China: A Meta-Analysis

Liu, Peng; He, Jin; Li, Hongwen; Wang, Qingjie; Lu, Caiyun; Zheng, Kan; Liu, Wenzheng; Zhao, Honghua; Lou, Shangyi

doi:10.1007/s42106-019-00060-w

Cited by 42 publications

(17 citation statements)

References 68 publications

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“…Therefore, if the crop residues are used for biochar production, the SOC sequestration from crop residue retention will not be achieved. Taking an increase of 10% SOC with crop residue retention (average of the values from Zhao et al, 2020 and Liu, He, et al, 2019) as a baseline, the global total net revenue of current pyrolysis plants decreases by 45.4% in the medium scenario (Figure S41).…”

Section: Discussionmentioning

confidence: 99%

Global soil organic carbon changes and economic revenues with biochar application

Han

Zhao

et al. 2021

GCB Bioenergy

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Biochar has been proposed as a promising negative CO2 emission technology to mitigate future climate change with the additional benefit of increasing agricultural production. However, the spatial responses of soil organic carbon (SOC) to biochar addition in cropland are still uncertain, and the economic feasibility of large‐scale biochar implementation remains unclear. Here, we analyzed the response of SOC to biochar addition using 389 paired field measurements. The results show that biochar addition significantly increased SOC by 45.8% on average with large regional variations. Using a random forest model trained with soil, climate, biotic, biochar, and management factors, we found that the response of SOC to biochar addition was mainly dependent on biochar application rates, initial SOC, edaphic (e.g., pH), and climatic (e.g., mean annual precipitation) variables. Combined with the predicted SOC changes to biochar addition on the global cropland, we assessed the revenue of the biochar system based on the current and potential pyrolysis plants in the world using the life‐cycle analysis. Net revenue of the currently existing 144 pyrolysis plants increases with larger plant capacity and higher carbon price. Potential revenue of building new plants is high in regions like America and Europe but low in regions with infertile soil, low crop residues availability, and inconvenient transportation. The global CO2 removal of biochar application is 6.6 Tg CO2e (CO2 equivalent) year−1 with a net revenue of $ 177 million dollars at a carbon price of $ 50 t−1 CO2 for current pyrolysis plants with a biomass‐processing capacity of 20,000 t year−1. Our study provides a full economic assessment of idealized biochar addition scenarios and identifies the locations with maximal potential revenues with new pyrolysis plants.

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Section: Discussionmentioning

confidence: 99%

Global soil organic carbon changes and economic revenues with biochar application

Han

Zhao

et al. 2021

GCB Bioenergy

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“…Dali Nayak [79] found that the belief that conservation tillage can reduce greenhouse gas is not a given by using meta-analysis. Peng Liu [80] performed a meta-analysis to evaluate the impact of crop straw retention on fields in China, and the results showed that the soil emission of CO 2 , N 2 O, and CH 4 were significantly increased under crop retention treatment by 23.64, 12.21, and 27.34%, respectively.…”

Section: Discussionmentioning

confidence: 99%

Application of Conservation Tillage in China: A Method to Improve Climate Resilience

et al. 2022

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In the context of climate change, agricultural cultivation, as one of the most vulnerable sectors, is under threat. Extreme weather and climate conditions have caused a series of problems, such as yield loss, more serious pests and diseases, and declining biodiversity. Conservation tillage is considered a potential method to improve climate resilience, yet the intrinsic mechanism of how conservation tillage functions to improve the climate resilience of agriculture is uncertain. Here, we performed document analysis to explore how conservation tillage stabilizes and increases crop yield and reduces greenhouse gases. We reviewed the definition of resilience and proposed the practice of conservation tillage. Our research found that conservation tillage has the potential of improving soil health and reducing greenhouse gases to enhance climate resilience. Although there is some evidence demonstrating that conservation tillage has a negative impact on crop yield and greenhouse gases, we still advocate the adoption of conservation tillage according to local conditions. We suggest that choosing proper practices, such as crop rotation, the use of cover crops, and holistic grazing, when used along with conservation tillage, can maximize the benefits of conservation tillage and alleviate the possible negative effects of this practice.

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“…This is particularly important for Europe, Africa, and Asia where conservation agriculture rates are low (Gattinger et al, 2011; Huggins & Reganold, 2008). Reducing such barriers for adopting soil conservation is essential because straw is often burnt on site or used as cattle feed, litter, or fuel in developing countries (Liu et al, 2019), but even partial residue cover could already have a beneficial impact for soil conservation (Huggins & Reganold, 2008).…”

Section: Conclusive Remarks and Policy Implicationsmentioning

confidence: 99%

“…Change rates of (a) crop yield, (b) erosion, and (c) carbon stock under various conservation principles compared to conventional tillage. Data were extracted from recent meta‐analyses, mostly at continental and global scales, reporting yield (Corbeels et al, 2020; Huang et al, 2013, 2015, 2018; Jat et al, 2020; Liang et al, 2016; Liu et al, 2019; Lu, 2020; Pittelkow, Liang, et al, 2015; Pittelkow, Linquist, et al, 2015; Qi et al, 2019; Shakoor et al, 2021; Van Den Putte et al, 2010; Wang & Shangguan, 2015; Wang et al, 2018; Xiao et al, 2019; Xiao, Zhao, & Zhang, 2020; Zhang et al, 2013, 2014, 2017; Zhao et al, 2017; Zheng et al, 2014), erosion (Chen et al, 2020; Jia et al, 2019; Liu et al, 2021; Maetens et al, 2012; Mhazo et al, 2016; Prosdocimi et al, 2016; Sun et al, 2015; Xiao et al, 2021; Xiao, Zhao, & Kuhn, 2020; Xiong et al, 2018; Zhao et al, 2019), and carbon (Aguilera et al, 2013; Angers & Eriksen‐Hamel, 2008; Bai et al, 2019; Du et al, 2017; Haddaway et al, 2017; Lam et al, 2013; Li et al, 2020; Liu et al, 2014; Luo et al, 2010a, 2010b; Mondal et al, 2020; Novara et al, 2021; Sun et al, 2020; Xiao, Zhou, et al, 2020; Xu et al, 2019). Circles and squares represent increase and decrease, respectively.…”

Section: Relative Importance Of No‐tillage Residue Retention and Crop...mentioning

confidence: 99%

Net effects of conservation agriculture principles on sustainable land use: A synthesis

Xiao

Kuhn

Zhao

et al. 2021

Global Change Biology

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Conservation agriculture represents a combination of three agronomic principles, including no-tillage or reduced tillage, permanent residue retention, and crop rotation (Palm et al., 2014). As the central and original principle, no-tillage soil management is commonly associated with three benefits for agriculture, soil, and climate: improved crop production, soil and water conservation, and increased

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Effect of Straw Retention on Crop Yield, Soil Properties, Water Use Efficiency and Greenhouse Gas Emission in China: A Meta-Analysis

Cited by 42 publications

References 68 publications

Global soil organic carbon changes and economic revenues with biochar application

Global soil organic carbon changes and economic revenues with biochar application

Application of Conservation Tillage in China: A Method to Improve Climate Resilience

Net effects of conservation agriculture principles on sustainable land use: A synthesis

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