Soil N is an essential element for plant growth, but its mineral forms are subject to loss to the environment by leaching and gaseous emissions. Despite its importance for the soil-plant system, factors controlling soil mineral N concentrations over large spatial scales are not well understood. We used NH4+ and NO3− concentrations (0–30 cm depth) from 469 sites across Australia, and determined soil controls on their regional variation. Soil mineral N varied regionally but depended on the different land uses. In the agricultural region of Australia, NH4+ tended to be depleted (4.9 ± 4.8 vs.

The sub-humid Chaco region of Argentina, originally covered by dry sclerophyll forest, has been subjected to clearing since the end of the '70 and replacement of the forest by no till farming. Land use changes produced a decrease in aboveground carbon stored in forests, but little is known about the impact on soil organic C stocks.

Nitrogen availability is a pivotal control on terrestrial carbon sequestration and global climate change. Historical and contemporary views assume that nitrogen enters Earth’s land-surface ecosystems from the atmosphere. Here we demonstrate that bedrock is a nitrogen source that rivals atmospheric nitrogen inputs across major sectors of the global terrestrial environment.

Agroforestry provides a unique opportunity to achieve the objectives of enhancing the productivity and improving the soil quality. Tree systems can also play an important role towards adapting to the climate variability and important carbon sinks which helps to decrease the pressure on natural forests.

Most of the world’s remaining tropical forests lie in areas that are customarily managed and/or legally owned by Indigenous Peoples and local communities.

National Innovations on Climate Resilient Agriculture (NICRA) is a network project of Indian Council of Agricultural Research, which was launched in February, 2011. The project aims to enhance resilience of Indian agriculture to climate change and climate vulnerability through strategic research and technology demonstration.

Most nations recently agreed to hold global average temperature rise to well below 2 °C. We examine how much climate mitigation nature can contribute to this goal with a comprehensive analysis of “natural climate solutions” (NCS): 20 conservation, restoration, and/or improved land management actions that increase carbon storage and/or avoid greenhouse gas emissions across global forests, wetlands, grasslands, and agricultural lands. We show that NCS can provide over one-third of the cost-effective climate mitigation needed between now and 2030 to stabilize warming to below 2 °C.

The explicit reference to “a balance between anthropogenic emissions by sources and removals by sinks of greenhouse gases” (Art. 4) in the 2015 Paris Agreement has given a strong impetus to Carbon Dioxide Removal (CDR) proposals that aim to remove greenhouse gas emissions through bioenergy and carbon capture and storage (BECCS).

Billed as a more environmentally friendly way to rear cattle, grass-fed beef has been the red meat of choice for many a climate-conscious carnivore.

Soil organic carbon (SOC) sequestration on agricultural land decreases the costs of climate change mitigation while promoting increased food security. SOC has the potential to sequester up to 3.5 GtCO2eq/yr by 2050 in a scenario consistent with 1.5 ºC warming.

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