[1]ZHAO Yue,LUO Zhijun,ZHAO Jie,et al.The Spatial Characteristics of Soil Nutrients and the Correlation with Topographic Factors in Xiajiang County[J].Research of Soil and Water Conservation,2018,25(05):118-123.
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The Spatial Characteristics of Soil Nutrients and the Correlation with Topographic Factors in Xiajiang County
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 05
Page number:
118-123
Column:
Public date:
2018-09-06
- Title:
- The Spatial Characteristics of Soil Nutrients and the Correlation with Topographic Factors in Xiajiang County
- CLC:
- S153.6
- DOI:
- -
- Abstract:
- The spatial characteristics of soil nutrients and their correlation with topographic factors can be used to provide evidence for effective conservation of soil nutrients and efficient utilization of cultivated land resources. Taking Xiajiang County of Jiangxi Province as an example, we analyzed the spatial characteristics and spatial autocorrelation of soil nutrients by using geostatistics and GIS technology, and also discussed the correlation between soil nutrients and terrain factors. The results showed that:(1) the distribution of soil nutrients in Xiajiang County accorded with the normal distribution; the coefficient of variation decreased in the order:available phosphorus (56.64%) > available potassium (37.69%) > alkaline hydrolysis nitrogen (26.67%) > organic matter (22.60%); (2) soil nutrients in Xiajiang County showed the low level in the middle part, high level in four sides, and larger in the east than in the west; the soil nutrient contents in Tonglin town was relatively high, and the contents in Baqiu town was low, and the spatial distribution was uneven; the spatial autocorrelation analysis showed that the H-H type aggregation of soil nutrients mainly concentrated in the eastern part of the study area, while L-L was located in the western part of the study area; (3) elevation was significantly positively correlated with soil nutrients; slope gradient was significantly negatively correlated with organic matter, available phosphorus and alkaline hydrolysis nitrogen; slope aspect was significantly positively correlated with organic matter, available potassium, and was a very significantly positively correlated with alkaline hydrolysis nitrogen, soil nutrients had no significant correlations with the curvature and the terrain; slope variability was significantly negatively correlated with soil nutrients.
- References:
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