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上海城市绿地土壤有机碳、全氮分布特征(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2011年06期
Page:
49-52
Column:
研究论文
publishdate:
2011-11-28

Article Info:/Info

Title:
Distribution characteristics of soil organic carbon and total nitrogen in greenbelt soil in Shanghai center city
Author(s):
HAO Ruijun FANG Hailan SHEN Lieying
Shanghai Landscape Gardening Research Institute, Shanghai 200232, China
Keywords:
urban greenbelt soilsoil organic carbontotal nitrogen land use patterndistribution characteristicShanghai
Classification number :
S153.6
DOI:
10.3969/j.jssn.1000-2006.2011.06.010
Document Code:
A
Abstract:
The distribution characteristics of soil organic carbon(SOC) and total nitrogen of greenbelt soil in Shanghai center city were studied, and the content of urban greenbelt soil under different land use patterns and soil profile were also analyzed. The results showed that the average content of SOC and nitrogen of greenbelt soil in Shanghai center city were 11.21 and 1.06 g/kg in which the content of SOC between 0—10 g/kg and 10—20 g/kg were accounted for 47.18 % and 47.18 %, and the content of nitrogen between 0.5—1.0 g/kg and 1.0—1.5 g/kg were accounted for 49.56 % and 39.80 %. Compared to the farmland soil in Shanghai suburb, the content of SOC and nitrogen in the urban greenbelt soil were decreased 5.68 and 0.89 g/kg, and the decreasing degree were 33.63 % and 45.64 %, respectively. Compared to the second soil survey, the content of SOC and nitrogen in the urban greenbelt soil decreased 10.19 and 018 g/kg,respectively, and the decreasing degree were about 47.62 % and 14.52 %. The sequence of SOC and nitrogen under different land use patterns was park soil > street soil > road soil, and the difference was mainly related with the level of soil maintaining; In the soil profile, the content of SOC and nitrogen were decreased along with the increasing of soil layers, and the surface layer was significantly higher than the lower layer; Regression analysis showed that there exited a significant linear relationship between SOC and nitrogen, and fitted to the equation y=0.056 3x+0430 5. These data illustrated that increasing the level of soil maintaining and decreasing the human impacts on urban greenbelt soil was an important way to increase the content of SOC and nitrogen.

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Last Update: 2011-11-28