Spatial variability of nitrate nitrogen in soil at different depths
[1]Li Jinrong,Yang Zhenfang,Li Jinling.Spatial variability of nitrate nitrogen in soil at different depths[J].Journal of Zhengzhou University (Engineering Science),2008,29(04):54-57.[doi:10.3969/j.issn.1671-6833.2008.04.013]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
29
Number of periods:
2008年04期
Page number:
54-57
Column:
Public date:
1900-01-01
- Title:
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Spatial variability of nitrate nitrogen in soil at different depths
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The nitrate nitrogen content of 100 soils in an area of 2 m200 was sampled at different depths and analyzed by regionalized variable theory and semivariance function. The results show that the nitrate nitrogen content in soil at different depths has spatial variability within a certain range; which is moderate variation; and the coefficient of variation of nitrate nitrogen in deep soil is greater than that of shallow soil. The semivariance of nitrate nitrogen content increases with the increase of sampling distance. To a certain extent; it tends to be stable; there is a spatial variation structure; and finally it is fitted to determine the degree of variation and spatial correlation scale; which is mainly caused by the spatial structure of the soil itself; and the spatially related scale of nitrate nitrogen content in soil at different depths is different.
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Last Update:
1900-01-01