Volume 27 Issue 3
Jun.  2010
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ZHENG Hong-bo, WU Jian-ping, ZHANG Shan. Spatial variability of farmland soil organic matter and soil nutrients in Ninghai County,Zhejiang Province[J]. Journal of Zhejiang A&F University, 2010, 27(3): 379-384. doi: 10.11833/j.issn.2095-0756.2010.03.010
Citation: ZHENG Hong-bo, WU Jian-ping, ZHANG Shan. Spatial variability of farmland soil organic matter and soil nutrients in Ninghai County,Zhejiang Province[J]. Journal of Zhejiang A&F University, 2010, 27(3): 379-384. doi: 10.11833/j.issn.2095-0756.2010.03.010

Spatial variability of farmland soil organic matter and soil nutrients in Ninghai County,Zhejiang Province

doi: 10.11833/j.issn.2095-0756.2010.03.010
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  • Corresponding author: WU Jian-ping
  • Publish Date: 2010-06-20
通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Spatial variability of farmland soil organic matter and soil nutrients in Ninghai County,Zhejiang Province

doi: 10.11833/j.issn.2095-0756.2010.03.010
    Corresponding author: WU Jian-ping

Abstract: Employing GIS(geographic information system) techniques and geostatistical analysis on farmland soils from Ninghai County,Zhejiang Province,China,spatial variability of soil organic matter (SOM),total nitrogen (TN),available phosphorus (AP),and available potassium (AK) was determined with SOM,TN,AP,and AK contour maps obtained using ordinary Kriging interpolation. Results showed that an exponential model well fitted semivariograms for SOM,TN,and AK,whereas after a logarithmic conversion,a spherical model best fitted semivariograms of AP. The ratio of the nugget to the sill[C0 / (C0 + C1)] for SOM(50.5%),TN(59.7%),and AP(50.5%) showed moderate spatial autocorrelation,whereas AK (77.3%) showed a slight degree of spatial autocorrelation. From the Kriging interpolation,elevation and land use type both strongly affected distribution of SOM,TN,AK,and AP. Thus,structural factors of parent material and elevation along with random factors,such as fertilization,soil management,and land use,jointly controlled spatial variability of soil nutrients in the study area.[Ch,4 fig. 4 tab. 7 ref.]

ZHENG Hong-bo, WU Jian-ping, ZHANG Shan. Spatial variability of farmland soil organic matter and soil nutrients in Ninghai County,Zhejiang Province[J]. Journal of Zhejiang A&F University, 2010, 27(3): 379-384. doi: 10.11833/j.issn.2095-0756.2010.03.010
Citation: ZHENG Hong-bo, WU Jian-ping, ZHANG Shan. Spatial variability of farmland soil organic matter and soil nutrients in Ninghai County,Zhejiang Province[J]. Journal of Zhejiang A&F University, 2010, 27(3): 379-384. doi: 10.11833/j.issn.2095-0756.2010.03.010

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