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Spatial distribution of soil organic matter and nitrogen in soil of circular-zoned vegetation areas in Wulanpao Wetland, Inner Mongolia China



Spatial distribution of soil organic matter and nitrogen in soil of circular-zoned vegetation areas in Wulanpao Wetland, Inner Mongolia China



Hupo Kexue = Journal of Lake Sciences 14(2): 145-151



This paper investigates preliminarily spatial distribution of soil organic matter and nitrogen in wetland soil of circular distribution vegetation areas in Wulanpao Wetland, Inner Mongolia, which shows that vertical distribution of nutrients in different vegetation areas are of similar tendency but their horizontal distributions are very different, and they vary along the soil moisture gradient, that is, organic matter and nitrogen content decrease with the increase of distance to waters, Polygonaceae area > Thpya orientalis area > Phragmites communis area. The ratio of carbon to nitrogen (C/N) ranges from 5 to 12, and C/N values also vary with moisture gradient, but variant tendency is opposite to that of SOM and TN content in the order Phragmites cmmunis area > Thpya orientalis area > Polygonaceae area; effects of moisture, soil organic matter and total nitrogen content on C/N values of Wetland soil and grassland soil are significantly different. Moisture and plant are the key factors influencing horizontal distributions of nutrients, but pH is not the one in this region.

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Accession: 020072107

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