The Science of Soil: Using radionuclides to support soil conservation
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چکیده
Land degradation and soil erosion threaten agricultural productivity, food security and environmental sustainability. Because formation of new soil takes place over a period of thousands of years, in human terms it is essentially a finite resource. Human activity has accelerated erosion rates through inappropriate land management practices, most importantly soil sealing, deforestation and intensive agriculture. The Food and Agriculture Organization of the United Nations (FAO)1 and the European soil thematic strategy2 have identified accelerated soil erosion as one of the major land degradation threats. Furthermore, world population growth, combined with increasing climate change and related natural hazards, is likely to worsen the impact of soil erosion and land degradation. The severity of the problem of depletion of this vital resource is only now becoming widely appreciated.
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