Estimating soil nitrogen balance at regional scale in China’s croplands from 1984 to 2014

He, Wentian; Jiang, Rong; He, Ping; Yang, Jingyi; Zhou, Wei; Ma, Jinlong; Liu, Yingxia

doi:10.1016/j.agsy.2018.09.002

Cited by 65 publications

(38 citation statements)

References 46 publications

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“…Previous modelling studies demonstrated that adjustment of fertilizer over time should be considered in climate change assessment, especially when climatic factors have obvious influence on crop production [13][14][15] . Our simulation showed that the appropriate fertilizer application rate and timing could result in higher maize yields and PFPN for both baseline and future climate scenarios, but excessive nitrogen application with low nutrient use efficiency (Table S1) led to resources waste and environmental pollution (e.g., greenhouse gas emission and nitrate leaching) 36 . N fertilizer with splitting application could improve the temporal synchronicity between crop N demand and soil N availability, thereby increasing crop yield and reducing residual soil nitrogen and environment risk 37,38 .…”

Section: Discussionmentioning

confidence: 95%

Modelling adaptation strategies to reduce adverse impacts of climate change on maize cropping system in Northeast China

Jiang

et al. 2021

Sci Rep

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Maize (Zea mays L.) production in Northeast China is vulnerable to climate change. Thus, exploring future adaptation measures for maize is crucial to developing sustainable agriculture to ensure food security. The current study was undertaken to evaluate the impacts of climate change on maize yield and partial factor productivity of nitrogen (PFPN) and explore potential adaptation strategies in Northeast China. The Decision Support System for Agrotechnology Transfer (DSSAT) model was calibrated and validated using the measurements from nine maize experiments. DSSAT performed well in simulating maize yield, biomass and N uptake for both calibration and validation periods (normalized root mean square error (nRMSE) < 10%, −5% < normalized average relative error (nARE) < 5% and index of agreement (d) > 0.8). Compared to the baseline (1980–2010), the average maize yields and PFPN would decrease by 7.6–32.1% and 3.6–14.0 kg N kg−1 respectively under future climate scenarios (2041–2070 and 2071–2100) without adaptation. Optimizing N application rate and timing, establishing rotation system with legumes, adjusting planting dates and breeding long-season cultivars could be effective adaptation strategies to climate change. This study demonstrated that optimizing agronomic crop management practices would assist to make policy development on mitigating the negative impacts of future climate change on maize production.

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Section: Discussionmentioning

confidence: 95%

Modelling adaptation strategies to reduce adverse impacts of climate change on maize cropping system in Northeast China

Jiang

et al. 2021

Sci Rep

Self Cite

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“…The overuse of N-fertilizers has been a widespread problem in many countries, and it remains an ongoing problem in developing countries particularly where there are expanding urban areas and high rates of population growth (Mikkelsen and Bruulsema 2005;Miao et al 2011;Arora et al 2018). As an example, Zhang et al (2007) reported that in China in the years 2000 and 2002 the average N application rates were 215, 187 and 209 kg ha −1 for rice, wheat and maize, respectively, with continuously increasing rates in many regions during the recent years leading to positive N balances of 93-120 kg N ha −1 year −1 (He et al 2018). Surplus N balances increase the potential for high GHG-emissions, particularly as N 2 O released from fertilized soils (Dobbie et al 1999;Reinsch et al 2018); as well as contributing to groundwater pollution by nitrate (Rahmati et al 2015).…”

Section: Introductionmentioning

confidence: 99%

A perspective on the potential of using marine organic fertilizers for the sustainable management of coastal ecosystem services

Emadodin

Reinsch

Rotter

et al. 2020

Environmental Sustainability

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Agricultural production is predicted to double during the next century. To ensure food security in response to global population growth is a challenge and will require strategies that mitigate associated environmental damage in ways consistent with United Nation's Sustainable Development Goals. One possible approach is to utilize organic fertilizers from marine sources to improve soil structure by enhancing activities of soil organisms and restoring essential plant nutrients to the soil. Here we identify opportunities to develop organic fertilizers from two types of materials of marine origin: seagrass wrack and jellyfish biomass. Seagrass wrack often occurs as undesirable waste material on beaches. In many coastal areas around the world jellyfish bloom presents a nuisance because of negative impacts on marine ecosystem productivity. Several investigations have reported that organic fertilizers produced from seagrass and jellyfish could enhance coastal ecosystem services by reducing pollution, and by improving soil health and quality. Recent research indicates that seagrass litter improves soil water holding capacity and the nutritional value of crops; moreover, it can be used as multi-functional fertilizer, due to its content of valuable macro-and microelements. The application of jellyfish fertilizer increases soil contents of organic matter, nitrogen, phosphorus and potassium and enhances the growth and survival of seedlings significantly. In this overview we describe novel approaches regarding the utilization of seagrass and jellyfish as sources of fertilizer, and experimental studies on the influences of marine organic fertilizers on soil restoration, and implications for coastal management.

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“…Nitrogen balance, defined as the difference between N inputs and outputs, can be used as an indicator to reveal N loss in the vegetable cropping systems 47–49 . In this present study, N leaching accounted for 19.2–26.4% of total N losses (Table 1), and other loss could include runoff, NH 3 volatilization, and gaseous emissions from nitrification and denitrification 50 .…”

Section: Discussionmentioning

confidence: 99%

Coconut shell derived biochar to enhance water spinach (Ipomoea aquatica Forsk) growth and decrease nitrogen loss under tropical conditions

Zhao

Zou

Ying

et al. 2019

Sci Rep

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Farms usually apply excessive nitrogen (N) fertilizers, especially in a vegetable production system, resulting in severe N leaching loss. Although there have been some reports on the impact of biochar on the N leaching in farmlands, most of them focused on field crops in temperate or subtropical religions. Limited information about N leaching in the tropical vegetable system is available regarding the quantitative data and effective countermeasures. A field experiment was conducted to quantify N leaching in a tropical leafy production system (Ipomoea aquatica Forsk) and to evaluate the effects of coconut shell biochar on N loss and crop growth. The results showed that compared to conventional fertilization with the 240 kg N ha−1 application rate (NPK), biomass yield of water spinach increased by 40.1% under the high biochar application rate of 48 t ha−1 (HBC), which was significantly higher than that of NPK treatment. Moreover, The HBC treatment decreased N leaching by 34.0%, which can be attributed to enhanced crop uptake which increased by 40.3% as compared to NPK treatment. The NH4+/NO3− ratio in leachates was between 0.01 and 0.05. It was concluded that coconut shell derived biochar improved the biomass yields of water spinach and reduced the leaching N loss, which provides a promising amendment in tropical regions.

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Estimating soil nitrogen balance at regional scale in China’s croplands from 1984 to 2014

Cited by 65 publications

References 46 publications

Modelling adaptation strategies to reduce adverse impacts of climate change on maize cropping system in Northeast China

Modelling adaptation strategies to reduce adverse impacts of climate change on maize cropping system in Northeast China

A perspective on the potential of using marine organic fertilizers for the sustainable management of coastal ecosystem services

Coconut shell derived biochar to enhance water spinach (Ipomoea aquatica Forsk) growth and decrease nitrogen loss under tropical conditions

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