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Based on field sampling and indoor analytical test, the authors analyzed soil carbon and nitrogen content and SOC density in different land use in Shanghai. The result shows that carbon density of several land use is in order of paddy field, dry land, woodland, abandoned land, urban greening land and garden plot and tidal flat. SOC and TN content and SOC density of paddy field were significantly higher...
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...
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