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2Â¥2012-03-01 12:28:55
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Cropping Systems to Improve Carbon Sequestration for Mitigation of Climate Change ×÷Õß: Qingren Wang; Yuncong Li; Alva, A. À´Ô´³ö°æÎï: Journal of Environmental Protection ¾í: 1 ÆÚ: 3 Ò³: 207-15 ³ö°æÄê: Sept. 2010 DOI: 10.4236/jep.2010.13025 ÕªÒª: The recent trend of an increase in the concentration of greenhouse gases (GHGs) in the atmosphere has led to an elevated concern and urgency to adopt measures for carbon (C) sequestration to mitigate the climate change. Among all GHGs, carbon dioxide (CO 2) is the most important one which occurs in the greatest concentration and has the strongest radiative forcing among all. Reducing the release of CO 2 to the atmosphere through "green energy" technologies or fossil fuel energy alternatives, such as wind, solar and hydraulic energies, is a major challenge. However, removal of atmospheric CO 2 by terrestrial ecosystems via C sequestration and converting the sequestered C into the soil organic C has provided a great opportunity for shifting GHG emission to mitigate the climate change. Soil is an ideal reservoir for storage of organic C since soil organic C has been depleted due to land misuse and inappropriate management through the long history. To optimize the efficiency of C sequestration in agriculture, cropping systems, such as crop rotation, intercropping, cover cropping, etc., play a critical role by influencing optimal yield, total increased C sequestered with biomass, and that remained in the soil. As matter of fact, soil C sequestration is a multiple purpose strategy. It restores degraded soils, enhances the land productivity, improves the diversity, protects the environment and reduces the enrichment of atmospheric CO 2, hence shifts emission of GHGs and mitigates climate change. Èë²ØºÅ: 12348754 ÎÄÏ×ÀàÐÍ: Journal Paper ÓïÖÖ: English ´¦ÀíÀàÐÍ: Practical, Experimental ÊÜ¿ØË÷Òý: agriculture; carbon compounds; climate mitigation; crops; soil ·ÇÊÜ¿ØË÷Òý: cropping systems; carbon sequestration improvement; climate change mitigation; greenhouse gases; radiative forcing; atmospheric carbon dioxide removal; terrestrial ecosystems; soil organic carbon; agriculture; crop rotation; intercropping; cover cropping; degraded soil restoration; land productivity enhancement ·ÖÀà´úÂë: A8670L Measurement and control techniques and instrumentation in environmental science; A8670G Atmosphere (environmental science); A8670C Soil and rock (environmental science); A9190 Other topics in solid Earth physics; A9160W Other properties of rocks, minerals and soil; A9260S Climatology; A9385 Instrumentation and techniques for geophysical, hydrospheric and lower atmosphere research ¹ú¼ÊרÀû·ÖÀà: G01V ×÷ÕßµØÖ·: Qingren Wang; Yuncong Li; Tropical Res. & Educ. Center, Homestead, FL, USA.; Alva, A.; ARS, USDA, Prosser, CA, USA. ³ö°æÉÌ: Scientific Research Publishing Inc., USA ²Î¿¼ÎÄÏ×Êý: 49 ISSN: 2152-2197 |
3Â¥2012-03-01 12:52:38
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4Â¥2012-03-01 15:00:17
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5Â¥2012-03-01 15:02:08
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