The state of soil organic carbon in agricultural lands of Iran with different agroecological conditions

Rezaei, Hassan; Saadat, Saeed; Mirkhani, Rasoul; Bagheri, yousef Reza; Esmaeelnejad, Leila; Hosseini, M.; Baybordi, Ahmad; Karami, Afsaneh; Sedri, Mohammad Hossein; Hamedi, Fardin; Tokasi, Mohammad; Omidvari, Shahram; Shirazi, Mohammad Reza Sattari; Arzanesh, Mohammad Hossein; Marjovi, A; Ghadbeiklou, Javad

doi:10.1080/03067319.2020.1786547

Cited by 9 publications

(5 citation statements)

References 41 publications

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“…Also, rather than considering fertilizer application merely from the view of inputs and short-term yields, and besides measures such as C:N ratios, we need to take on a more holistic view, looking at how choice of fertilizer relates to nutrient absorption efficiency, drought resistance of root systems [143], soil health, land degradation, water management and ecological intensification. Future shortages of P [144][145][146], loss of arable land [37], decline in soil carbon [147], as well as widespread decline in soil fertility driven by industrial practices in agriculture, point to the important role of organic fertilizers. However, availability of organic material is constrained by competing demands on biomass and land for industrial and carbon sequestration purposes, while contamination of organic waste and wastewater [10,118,148] poses an issue for possible circular approaches.…”

Section: Discussionmentioning

confidence: 99%

The Role of Organic Fertilizers in Transition to Sustainable Agriculture in the MENA Region

Avery¹

2022

New Generation of Organic Fertilizers

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Organic fertilizers can serve as an element of transitions to sustainable low-input agriculture in semi-arid regions of the MENA region. They play a key role in supporting soil biota and soil fertility. Yield improvements, availability and relatively low costs make organic fertilizers an attractive alternative for farmers. In semi-arid regions, important considerations are improved soil quality, which in turn affects soil water retention, while better root development helps crops resist heat and water stress. Organic fertilizers thus support climate adaptation and regional food security. Soil quality is crucial for carbon sequestration, at the same time that increased nutrient retention reduces impacts of agricultural runoff on groundwater and water bodies. Factors that impede the generalised use of organic fertilizers include lack of expertise, subsidy structures, constraints of the wider food and agricultural systems, and difficulties in transitioning from conventional agriculture. Such obstacles are aggravated in countries affected by security issues, financial volatility or restrictions in access to market. Against the background of both general and local constraints, the chapter examines possible pathways to benefit from organic fertilizers, in particular synergies with other sustainable agricultural practices, as well as improved access to expertise.

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Section: Discussionmentioning

confidence: 99%

The Role of Organic Fertilizers in Transition to Sustainable Agriculture in the MENA Region

Avery¹

2022

New Generation of Organic Fertilizers

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Section: Discussionmentioning

confidence: 99%

New Generation of Organic Fertilizers

2022

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He is currently a professor in the Department of Genetics and Bioengineering, Yeditepe University, Turkey. His research mainly focuses on soil ecology and biological fertilizer applications. Dr. Turan has more than 100 research publications to his credit. He is a member of many international organizations such as the International Federation of Organic Agriculture Movements (IFOAM), Research Institute of Organic Agriculture (FiBL), and European Biostimulants Industry Council (EBIC), and he has chaired many conferences in Turkey and Europe.

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“…Regardless, long‐term assessments have consistently shown a decline in C uptake and loading in plant–soil systems in arid areas that have become even drier (Ruehr et al., 2014; Yang & Zhou, 2013) (Figure 3). Additionally, aridity‐induced agroecosystems abandonment and cropland soil degradation frequently leads to soil C losses from SOC, contributing to atmospheric CO 2 enrichment (Rezaei et al., 2020). For example, the increasing drought intensity in Mongolia during the 2000s shifted terrestrial ecosystems from being C sinks to C sources, but such phenomena have been poorly explored in arid ecosystems globally (Lu et al., 2019).…”

Section: Changes In Carbon and Nutrient Storage In Plant Soil System ...mentioning

confidence: 99%

Impact of aridity rise and arid lands expansion on carbon‐storing capacity, biodiversity loss, and ecosystem services

Tariq,

Sardans,

Zeng

et al. 2024

Global Change Biology

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Drylands, comprising semi‐arid, arid, and hyperarid regions, cover approximately 41% of the Earth's land surface and have expanded considerably in recent decades. Even under more optimistic scenarios, such as limiting global temperature rise to 1.5°C by 2100, semi‐arid lands may increase by up to 38%. This study provides an overview of the state‐of‐the‐art regarding changing aridity in arid regions, with a specific focus on its effects on the accumulation and availability of carbon (C), nitrogen (N), and phosphorus (P) in plant–soil systems. Additionally, we summarized the impacts of rising aridity on biodiversity, service provisioning, and feedback effects on climate change across scales. The expansion of arid ecosystems is linked to a decline in C and nutrient stocks, plant community biomass and diversity, thereby diminishing the capacity for recovery and maintaining adequate water‐use efficiency by plants and microbes. Prolonged drought led to a −3.3% reduction in soil organic carbon (SOC) content (based on 148 drought‐manipulation studies), a −8.7% decrease in plant litter input, a −13.0% decline in absolute litter decomposition, and a −5.7% decrease in litter decomposition rate. Moreover, a substantial positive feedback loop with global warming exists, primarily due to increased albedo. The loss of critical ecosystem services, including food production capacity and water resources, poses a severe challenge to the inhabitants of these regions. Increased aridity reduces SOC, nutrient, and water content. Aridity expansion and intensification exacerbate socio‐economic disparities between economically rich and least developed countries, with significant opportunities for improvement through substantial investments in infrastructure and technology. By 2100, half the world's landmass may become dryland, characterized by severe conditions marked by limited C, N, and P resources, water scarcity, and substantial loss of native species biodiversity. These conditions pose formidable challenges for maintaining essential services, impacting human well‐being and raising complex global and regional socio‐political challenges.

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The state of soil organic carbon in agricultural lands of Iran with different agroecological conditions

Cited by 9 publications

References 41 publications

The Role of Organic Fertilizers in Transition to Sustainable Agriculture in the MENA Region

The Role of Organic Fertilizers in Transition to Sustainable Agriculture in the MENA Region

New Generation of Organic Fertilizers

Impact of aridity rise and arid lands expansion on carbon‐storing capacity, biodiversity loss, and ecosystem services

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