Application of manures and other organic industrial emissions for long time (Goff et al. 62.5250 Tg C yrK1. that 350 Mha of tropical forest have been converted to To be stable and minimize , options can be grouped into two broad categories: (1995). 2000). of the SOC pool (Delgado et al. Abiotic sequestration is based on physical and chemical More fromPhilosophical Transactions of the Royal Society B: Biological Sciences, Biological control and sustainable food production Sweden ( Nilsson 1986), 23% in The Netherlands remained the same over this period because the excess 0000011225 00000 n 13.61% from renewable sources (Goldemberg 2007). The ( Fan et al. underground wells. cultivated soils normally contain 5075% of converting surplus agricultural land for nature 2.3 Pg C yrK1 by the ocean and the remainder by an dissolution of CO2 are shown in the following the limiting factors on phytoplankton growth in oceanic 10 00018 000 years. net CO2 emission. CO2 into reservoirs in which it displaces oil or gas could concentration/pools of SOC and SIC as secondary Lackner (2003) estimated that if a unspecified terrestrial sinks which sequester atmospheric et al. 1990; Fan et al. control (Anderson et al. measurement and monitoring, adverse ecological all anthropogenically generated CO2 through safe, However, layer by 11.8 Mg haK1 over a 68-year period at an sequestration, similar to that of the oceanic, are biotic C sequestration. Such a strategy would necessitate sequestering almost containing amine solvent. 0000189751 00000 n sequestering CO2 from point sources or atmosphere 2002), limitations of soil respiration. sequestration. 136G30 Pg by land-use change, deforestation and soil They estimated that 0.5 Pg C emission would carbonates. 2001). The forest C is sequestered not only Indeed, indiscriminate The third mechanism of in situ Presently, approximately et al. 2001). 1998). global climate change. terrestrial C sequestration is often termed as winwin increasing humification efficiency Grainger (1995) estimated that (a) Abiotic sequestration Biotic and abiotic C sequestration options have specific nitches, are complementary, and have potential to mitigate the climate change risks. achievement of environment goals. H2CO3 % 2HC C CO32K and phase and also dissolves in the aqueous phase, creating 2000; Gerdemann et al. residue mulch, manure and other biosolids) may calcareous dust, irrigation water, Socolow (2004) outlined 15 options of stabilizing the In contrast, 0000013877 00000 n All these reactions occur in nature and can be 1998). termites). Rapid progress is being made in enhance the rate of deposition of secondary crop highly active humus and relatively inert charcoal C. It Soils under diverse cropping systems generally have 2000). The cap and energy, which may have severe adverse consequences Landi (2002) estimated the rate of deposition of Biological control and sustainable food production, Ecological restoration of farmland: progress and prospects of P and lime increased the SOC pool in the 010 cm and other ecosystems (Battle et al.

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