Significant acidification in major Chinese croplands

A - Papers appearing in refereed journals

Guo, J. H., Liu, X. J., Zhang, Y., Shen, L. J., Han, W. X., Zhang, W-F., Christie, P., Goulding, K. W. T., Vitousek, P. M. and Zhang, F-S. 2010. Significant acidification in major Chinese croplands. Science - AAAS. 327 (5968), pp. 1008-1010.

AuthorsGuo, J. H., Liu, X. J., Zhang, Y., Shen, L. J., Han, W. X., Zhang, W-F., Christie, P., Goulding, K. W. T., Vitousek, P. M. and Zhang, F-S.
Abstract

Soil acidification is a major problem in soils of intensive Chinese agricultural systems. We used two nationwide surveys, paired comparisons in numerous individual sites, and several long-term monitoring-field data sets to evaluate changes in soil acidity. Soil pH declined significantly (P < 0.001) from the 1980s to the 2000s in the major Chinese crop-production areas. Processes related to nitrogen cycling released 20 to 221 kilomoles of hydrogen ion (H(+)) per hectare per year, and base cations uptake contributed a further 15 to 20 kilomoles of H(+) per hectare per year to soil acidification in four widespread cropping systems. In comparison, acid deposition (0.4 to 2.0 kilomoles of H(+) per hectare per year) made a small contribution to the acidification of agricultural soils across China. 

KeywordsRRES175; 175_Soil science; 175_Agroecology
Year of Publication2010
JournalScience - AAAS
Journal citation327 (5968), pp. 1008-1010
Digital Object Identifier (DOI)doi:10.1126/science.1182570
Open accessPublished as non-open access
Funder project or codeSEF
Publication dates
Online19 Feb 2010
Publication process dates
Accepted14 Jan 2010
PublisherAmerican Association for the Advancement of Science (AAAS) Washington DC

Permalink - https://repository.rothamsted.ac.uk/item/8q502/significant-acidification-in-major-chinese-croplands

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