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CIAT Soil Carbon Sequestration Research by Rolf Sommer, CGIAR Research Program on Water, Land and Ecosystems. Presentation made at Soil Carbon Sequestration: Supporting NDCs and donor action. A CGIAR-wide workshop held 12 Nov 2017 at ZEF Center for Development Research, University of Bonn. Works...


Sommer, RolfSilva, Mayesse A. daSöderström, MatsPiikki, KristinMukalama, JohnMutua, JohnKihara, JobDesta, Lulseged TameneDesta, EvanVerchot, Louis V.[CIAT Soil Carbon Sequestration Research]CIAT Soil Carbon Sequestration Research

General: Lab determined topsoil bulk density, contents of sand, clay and organic carbon in Murugusi, W. Kenya, together with spatial coordinates of where the soil samples were taken (rounded to the closest center point of a 250 m × 250 m raster). All lab analyses were carried out at the ILRI/CIAT...


Piikki, KristinSöderström, MatsSommer, RolfSilva, Mayesse da[Physical topsoil properties in Murugusi, Western Kenya]Physical topsoil properties in Murugusi, Western Kenya

Amazonian Dark Earths (ADEs) are fertile soils for agricultural production as well as important archaeological resources for understanding the pre-Columbian past of the Neotropical lowland rainforest. ADEs are threatened by expanding land exploitation and there is a need to develop efficient appr...


Söderström, MatsEriksson, JanIsendahl, ChristianPahl Schaand, DeniseStenborg, PerRebellato, LilianPiikki, Kristin[Sensor mapping of Amazonian Dark Earths in deforested croplands]Sensor mapping of Amazonian Dark Earths in deforested croplands

Recent estimates show that one third of the world’s land and water resources are highly or moderately degraded. Global economic losses from land degradation (LD) are as high as USD $10.6 trillion annually. These trends catalyzed a call for avoiding future LD, reducing ongoing LD, and reversing pa...


Nijbroek, Ravic P.Piikki, KristinSöderström, MatsKempen, BasTurner, Katrine GraceHengari, SimeonMutua, John[Soil Organic Carbon Baselines for Land Degradation Neutrality: Map Accuracy and Cost Tradeoffs with Respect to Complexity in Otjozondjupa, Namibia]Soil Organic Carbon Baselines for Land Degradation Neutrality: Map Accuracy and Cost Tradeoffs with Respect to Complexity in Otjozondjupa, Namibia

Four proximal soil sensors were tested at four smallholder farms in Embu County, Kenya: a portable X-ray fluorescence sensor (PXRF), a mobile phone application for soil color determination by photography, a dual-depth electromagnetic induction (EMI) sensor, and a LED-based soil optical reflectanc...


Piikki, KristinSöderström, MatsEriksson, JanMuturi, John JamleckMuthee, Patrick IreriWetterlind, JohannaLund, Eric[Performance evaluation of proximal sensors for soil assessment in smallholder farms in Embu County, Kenya]Performance evaluation of proximal sensors for soil assessment in smallholder farms in Embu County, Kenya
Piikki, KWinowiecki, Leigh A.Vågen, Tor-GunnarParker, LSöderström, Mats[The importance of soil fertility constraints in modeling crop suitability under progressive climate change in Tanzania]The importance of soil fertility constraints in modeling crop suitability under progressive climate change in Tanzania

Agriculture is a major contributor to climate change, emitting the three major greenhouse gases (GHGs) – carbon dioxide (CO2), methane and nitrous oxide – into the atmosphere. According to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC), the Agriculture, Forest...


Sommer, RolfSilva, Mayesse daNyawira, SylviaAbera, WuletawuTamene, LulsegedYaekob, TesfayeKihara, JobPiikki, KristinSöderström, MatsMargenot, Andrew J.[Soil carbon under current and improved land management in Kenya, Ethiopia and India: Dynamics and sequestration potentials]Soil carbon under current and improved land management in Kenya, Ethiopia and India: Dynamics and sequestration potentials

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