Biochar to be considered as an official climate change mitigation and adaptation strategy

The International Biochar Initiative (IBI) announces that the United Nations Convention to Combat Desertification (UNCCD) has submitted a proposal to include biochar as a mitigation and adaptation technology to be considered in the post-2012-Copenhagen agenda of the UN Framework Convention on Climate Change (UNFCCC). The UNCCD proposal highlights the many benefits of biochar: the fact that it can be measured easily, the role it can play in sequestering carbon in dryland soils and its potential as a strategy to prevent deforestation.

Biochar is a fine-grained, highly porous charcoal that helps soils retain nutrients and water. The carbon in biochar resists degradation and can sequester carbon in soils for hundreds to thousands of years.

IBI Executive Director Debbie Reed said, "The UNCCD submission is a great success, and is paralleled by a lot of very positive discussions and interest in biochar amongst country delegates as well as observers of the process."

The UNCCD, a sister convention to the UNFCCC, has identified biochar as a unique opportunity to address soils as a carbon sink. According to the submission document:

The world's soils hold more organic carbon than that held by the atmosphere as CO2 and vegetation, yet the role of the soil in capturing and storing carbon dioxide is often one missing information layer in taking into consideration the importance of the land in mitigating climate change.

UNCCD proposes that biochar must be considered as a vital tool for rehabilitation of dryland soils: "The fact that many of the drylands soils have been degraded means that they are currently far from saturated with carbon and their potential to sequester carbon may be very high ... making the consideration of biochar, as a strategy for enhancing soils carbon sequestration, imperative."

UNCCD also cites the ability of biochar to address multiple climate and development concerns while avoiding the disadvantages of other bioenergy technologies that deplete soil organic matter (SOM).

Pyrolysis systems that produce biochar can provide many advantages. Biochar restores soil organic carbon and soil fertility, reduces emissions from agriculture, and can provide clean, renewable energy. Conventional biomass energy competes with soil building needs for crop residue feedstocks, but biochar accommodates both uses. - Debbie Reed, IBI Executive Director

Reduced deforestation is another biochar advantage cited by the UNCCD in their submitted proposal for including biochar in carbon trading mechanisms:

The carbon trade could provide an incentive to cease further deforestation; instead reforestation and recuperation of degraded land for fuel and food crops would gain magnitude.

UNCCD proposes to include biochar in the Clean Development Mechanism (CDM), and to revise the rules to account for biochar as a permanent means of carbon capture. UNCCD also proposes adjusting the carbon offset rules to allow greater financial flows to help developing countries increase soil organic matter with biochar.

Biochar has one important additional advantage over other land use carbon sequestration projects - carbon sequestration through biochar is easy to quantify. It is also relatively permanent.

The UNCCD says:

Potential drawbacks such as difficulty in estimating greenhouse gas removals and emissions resulting from land use, land use change and forestry (LULUCF), or destruction of sinks through forest fire or disease do not apply to biochar soil amendments.

Overall, the potential magnitude of biochar as a climate mitigation tool is great:
energy :: sustainability :: biomass :: bioenergy :: land-use :: deforestation :: soils :: biochar :: climate change :: UNCCD :: CDM ::

IBI Board Chair Dr. Johannes Lehmann said, "We are pleased that the UNCCD has recognized the potential of biochar. Results from IBI's preliminary model to estimate the potential of biochar carbon sequestration show that biochar production from agriculture and forestry residues can potentially sequester one gigaton of carbon in the world's soils annually by 2040. Using the biochar energy co-product to displace fossil fuel energy can approximately double the carbon impact of biochar alone."

IBI's objective for the remainder of the UN meeting at Poznan is to interest more countries in proposing biochar for consideration as a mitigation and adaptation technology in the post-2012 Copenhagen process of the UNFCCC.

The International Biochar Initiative (IBI) is a registered non-profit organization that serves as an international platform for the exchange of information and activities in support of biochar research, development, demonstration and commercialization. IBI participants comprise a consortium of researchers, commercial entities, policy makers, development agents, farmers and gardeners and others committed to supporting sustainable biochar production and utilization systems that remove carbon from the atmosphere and enhance the earth's soils.

Many small scale initiatives are being launched to get biochar taken up by poor farmers in developing countries so that soils not only become carbon sinks, but yield more food and biomass. The activities of the Biochar Fund offer an interesting example. Its model is aimed at making biochar the kernel of a highly integrated development concept that succeeds in tackling food insecurity and low agricultural productivity amongst subistence farmers, deforestation, energy poverty and climate change - simultaneously.

Picture: seedlings illustrating the difference between plants grown in biochar-amended soil (darker soil on the right). Credit: Robert Flanagan.