Greenhouse gas emissions and carbon footprint under gravel mulching on China's Loess Plateau

Wang, Donglin; Li, Yang; Zhang, Tibin; Zhou, Lifeng; Ge, Jun; Zhang, Lei; Dyck, Miles; Feng, Hao

doi:10.1002/agj2.20022

Cited by 6 publications

(4 citation statements)

References 42 publications

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“…The results showed that the soil temperature in the whole root zone was affected by soil moisture, and the soil temperature temperature with different degrees, and the suitable range of soil temperature was also different. Ma et al (2015) estab-In conclusion, irrigation amount is a very important factor affecting soil moisture and temperature, which would indirectly affect crop growth, root distribution and yield (Zhang et al, 2016;Liu et al, 2019;Wang et al, 2020). However, most of the existing studies consider the pair relationships among soil, root and crop yield based on unilateral factors (Chen and Liu, 2013), there is a lack of comprehensive studies on the potential effects of different drip irrigation treatments on soil environment, crop root and yield formation (Fan et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

The potential effects of drip irrigation on soil environment, root distribution and yield of greenhouse tomato

Ge¹,

Gong²,

Liu³

et al. 2022

Europ.J.Hortic.Sci.

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Section: Introductionmentioning

confidence: 99%

The potential effects of drip irrigation on soil environment, root distribution and yield of greenhouse tomato

Ge¹,

Gong²,

Liu³

et al. 2022

Europ.J.Hortic.Sci.

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“…During recent years an increasing stream of research has been published on climate effects in relation to different sectors, not the least agriculture. One example is studies on greenhouse gas emissions and C footprint in relation to specific agricultural methods on specific types of soils in specific climate zones (e.g., Wang et al., 2020). Another example is studies on greenhouse effects derived from manure composting (e.g., Bai et al., 2020).…”

Section: Introductionmentioning

confidence: 99%

“…One example Abbreviation: IPCC, Intergovernmental Panel on Climate Change © 2020 The Author. Agronomy Journal © 2020 American Society of Agronomy is studies on greenhouse gas emissions and C footprint in relation to specific agricultural methods on specific types of soils in specific climate zones (e.g., Wang et al, 2020). Another example is studies on greenhouse effects derived from manure composting (e.g., Bai et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

A proposal to rethink agriculture in the climate calculations

Frankelius

2020

Agronomy Journal

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According to the Intergovernmental Panel on Climate Change (IPCC), agriculture is a main source of negative greenhouse gases. The calculations are based on empirical facts but also, like all research, on certain perspectives or paradigms including assumptions and subjective choices of system boundaries for analysis. Greenhouse gases in relation to agriculture are often presented in diagrams showing, for example, arrows of emissions from soil, cattle, tractors, and manure storage. However, the fundament of agriculture is the photosynthesis. Carbon dioxide (CO2) is caught by crops that, in turn, produce oxygen (O2) and at the same time binds carbon (C) in roots and shoots. One part of this C transforms into soil organic C, and that is sometimes discussed in research, the public debate, and by IPCC. But the main part transforms into harvested crops, that is, cereals like wheat (Triticum aestivum L.), and other carbohydrate products like pea (Pisum sativum L.) or oilseed. This last‐mentioned photosynthesis effect is not, in the IPCC calculations, considered as a positive climate contribution from the agricultural sector. The consequence of this might be that policymakers will not understand the whole picture of agriculture in relation to climate effects; and therefore make decisions that affect food production, climate change, and biodiversity in a not optimal way from a holistic sustainability viewpoint.

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“…Greenhouse cultivation is increasing in scale in line with other developments in modern agriculture that have made agriculture a major driver of economic development (Gong et al, 2020;Liu et al, 2018;Wang et al, 2020). Control of the greenhouse environment through management of the microclimate and controlled irrigation promotes healthy crop growth, increased crop yield, and increased fruit quality (Liu et al, 2019b;Shamshiri et al, 2018;Wang and Zhou, 2017).…”

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confidence: 99%

Combined Effects of Ventilation and Irrigation on Temperature, Humidity, Tomato Yield, and Quality in the Greenhouse

Ge¹,

Lin-feng²,

Gong³

et al. 2021

horts

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Ventilation and soil moisture influence greenhouse cultivation. Experiments were conducted at Xinxiang Irrigation Research Base of the Chinese Academy of Agricultural Sciences, Henan Province, China, to identify how ventilation and irrigation affected the greenhouse microenvironment. To develop ventilation and irrigation protocols that increase crop yield and improve the quality of drip-irrigated tomatoes grown in the greenhouse, three ventilation modes (T1, T2, and T3) were developed by opening vents in different locations in a completely randomized pattern. T1 had open vents on the north wall and roof of the greenhouse. T2 had open vents on the north and south walls and the roof. T3 had open vents on the north and south walls. Three irrigation treatments (W1, W2, and W3) were designed based on the accumulated water surface evaporation (Ep) of a standard 20-cm evaporation pan. The irrigation quantities were 0.9×Ep (W1), 0.7×Ep (W2), and 0.5×Ep (W3). The spatial and temporal distributions of temperature and humidity were analyzed for different combinations of ventilation and irrigation to identify their effects on tomato yield and fruit quality. Major results were as follows: 1) In addition to solar radiation, ventilation had an important influence on Ep and, on a daily scale, ventilation had a significant effect on Ep (P < 0.05). 2) Ventilation had a significant effect on indoor wind speed, but the effect varied during different growth stages. During the flowering and fruit setting stage, wind speed for T2 significantly differed from those of T1 and T3 (P < 0.01). During the harvest stage, the three ventilation treatments had significantly different effects (P < 0.01). A correlation analysis showed high correlation between T2 wind speed and T3 wind speed (R = 0.831), but low correlation between T2 wind speed and T1 wind speed (R = 0.467). 3) The effect of ventilation on greenhouse humidity and temperature was greater than the effect of irrigation. The differences in air temperature among various combined treatments of ventilation and irrigation were significant for the flowering and fruiting stages (P < 0.05), but they were not significant for the late harvest stage (P > 0.05). There were significant differences in humidity on sunny days (P < 0.01), but no significant differences on cloudy or rainy days (P > 0.05). Air temperature at 2 m was greater than canopy temperature, but humidity at 2 m was less than that at canopy level. 4) Irrigation water quantity was positively correlated with tomato yield and negatively correlated with the fruit quality indicators total soluble solids, vitamin C content, organic acid content, and soluble sugars content. Ventilation had an effect primarily during the harvest period; it had no significant effect on yield (P > 0.05). However, it had a significant effect on vitamin C content and the sugar:acid ratio (P < 0.01). The combination treatment of T2W2 is recommended as the optimal treatment for greenhouse tomatoes using drip irrigation to produce an optimal combination of crop yield and fruit quality. This study provides theoretical and technical support for the improvement of greenhouse climate control by optimizing greenhouse ventilation and irrigation techniques to promote tomato yield and improve fruit quality.

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Greenhouse gas emissions and carbon footprint under gravel mulching on China's Loess Plateau

Cited by 6 publications

References 42 publications

The potential effects of drip irrigation on soil environment, root distribution and yield of greenhouse tomato

The potential effects of drip irrigation on soil environment, root distribution and yield of greenhouse tomato

A proposal to rethink agriculture in the climate calculations

Combined Effects of Ventilation and Irrigation on Temperature, Humidity, Tomato Yield, and Quality in the Greenhouse

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