Managing soil carbon for climate change mitigation and adaptation in Mediterranean cropping systems: A meta-analysis

2013 ◽  
Vol 168 ◽  
pp. 25-36 ◽  
Author(s):  
Eduardo Aguilera ◽  
Luis Lassaletta ◽  
Andreas Gattinger ◽  
Benjamín S. Gimeno
2021 ◽  
Author(s):  
Matthew Jordon ◽  
Kathy Willis ◽  
Paul-Christian Bürkner ◽  
Neal Haddaway ◽  
Pete Smith ◽  
...  

Abstract Regenerative Agriculture proposes to contribute to climate change mitigation and increased food production through improved yields by building soil organic carbon (SOC). We examine three Regenerative practices: reducing tillage intensity, cover cropping and including a grass-based phase in arable rotations (ley-arable systems). Our Bayesian meta-analysis of 195 paired SOC and crop yield observations from published studies finds statistically significant increases in SOC concentration for reduced tillage intensity (0.06 g C.100g-1) and ley-arable systems (0.05 g C.100-1g per year of ley) compared to conventional practice over an average study duration of 15 years, but no effect of cover crops. None of these practices come at a cost to yield during cropping years. However, we find no evidence of a win-win between soil carbon sequestration and enhanced agricultural productivity. Further, the small magnitude of SOC increases suggests a limited role for these Regenerative practices in climate change mitigation strategies in temperate regions.


Author(s):  
Goaitske Iepema ◽  
Nyncke J. Hoekstra ◽  
Ron de Goede ◽  
Jaap Bloem ◽  
Lijbert Brussaard ◽  
...  

2021 ◽  
Author(s):  
María Martínez-Mena ◽  
Carolina Boix-Fayos ◽  
Efrain Carrillo-López ◽  
Elvira Díaz-Pereira ◽  
Raúl Zornoza ◽  
...  

Abstract Purpose Diversification practices such as intercropping in woody cropping systems have recently been proposed as a promising management strategy for addressing problems related to soil degradation, climate change mitigation and food security. In this study, we assess the impact of several diversification practices in different management regimes on the main carbon fluxes regulating the soil carbon balance under semiarid Mediterranean conditions. Methods The study was conducted in two nearby cropping systems: (i) a low input rainfed almond (Prunus dulcis Mill.) orchard cultivated on terraces and (ii) a levelled intensively irrigated mandarin (Citrus reticulata Blanco) orchard with a street-ridge morphology. The almond trees were intercropped with Capparis spinosa or with Thymus hyemalis While the mandarin trees were intercropped with a mixture of barley and vetch followed by fava bean. Changes caused by crop diversifications on C inputs into the soil and C outputs from the soil were estimated. Results Crop diversification did not affect soil organic carbon stocks but did affect the carbon inputs and outputs regulating the soil carbon balance of above Mediterranean agroecosystems. Crop diversification with perennials in the low-input rainfed woody crop system significantly improved the annual soil C balance in the short-term. However, crop diversification with annual species in the intensively managed woody crop system had not effect on the annual soil C balance. Conclusions Our results highlight the potential of intercropping with perennials in rainfed woody crop systems for climate change mitigation through soil carbon sequestration.


2021 ◽  
Author(s):  
Paloma Marcos Morezuelas

As users of forest products and guardians of traditional knowledge, women have always been involved in forestry. Nevertheless, their access to forest resources and benefits and participation in forest management is limited compared to mens despite the fact that trees are more important to women, who depend on them for their families food security, income generation and cooking fuel. This guide aims to facilitate the incorporation of a gender lens in climate change mitigation and adaptation operations in forests, with special attention to those framed in REDD. This guide addresses four themes value chains, environmental payment schemes, firewood and biodiversity that relate directly to 1) how climate change impacts affect women in the forest and 2) how mitigation and adaptation measures affect womens access to resources and benefits distribution.


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