Notice of RetractionSoil oragnic carbon storage of different land use types in Shanghai

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

Taking advantage of carbon intensity measured in various land use and research results of land use change in Shanghai, the authors estimated SOC reserve of surface soil in 0-20cm in Shanghai in the periods of 1994, 2000, 2003 and 2006. And the results of SOC storage in 0-20cm surface soil were 14,904,700t, 13,991,200t, 12,835,600t and 11,858,000t, taking up a trend of decreasing year by year; the average SOC density was 35.41t/hm², 35.44t/hm², 35.06t/hm² and 35.15 t/hm². Considering from the spatial distribution of SOC storage, it reveals an obvious increasing trend from urban, suburb to outer suburbs. However, from the perspective of annual change trend of SOC stocks in various areas from 1994 to 2006, it can be seen that SOC stocks of all areas tend to decline. During this period, as a result of land use change in Shanghai, the loss of SOC storage reached 3,069,900 t. The study result shows that land use change caused by human activities is becoming an important reason of the impact on soil carbon pool change in Shanghai.