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南京城市土壤pH和养分的空间分布(PDF)

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

Issue:
2006年04期
Page:
69-72
Column:
研究论文
publishdate:
2006-04-20

Article Info:/Info

Title:
Spatial Distribution of Soil pH and Nutrients in Urban Nanjing
Article ID:
1000-2006(2006)04-0069-04
Author(s):
WANG Xin-zhi12 ZHANG Gan-lin2* YU Yuan-chun1 ZHANG Jin-chi1
1. College of Forest Resources and Environment Nanjing Forestry University, Nanjing 210037, China; 2. Institute of Soil Science Chinese Academy of Sciences, Nanjing 210008, China
Keywords:
Soil nutrients Spatial variability Kriging interpolation IDW interpolation Geostatistics
Classification number :
S714
DOI:
10.3969/j.jssn.1000-2006.2006.04.016
Document Code:
A
Abstract:
Contents and distribution of soil pH, total potassium (TK), total nitrogen (TN), total phosphorus (TP), organic matter (OM) and available phosphorus (AP) across Nanjing urban area were studied using GIS technology and geostatistical analysis methods. Semivariograms for soil pH, total potassium (TK) were well fitted by linear with sill model, and could be further interpolated by block-Kriging, while no suitable model fitted the semivariograms for TP, AP, OM and TN, even after logarithm conversion of these properties. It was suggested that the spatial variability of pH and TK was primarily controlled by the structural factors of the spatial heterogeneity of parent material and landform, whereas variability of TP, AP, OM and TN was greatly affected by urban human activities and they were spatially heterogeneous even in a short distance.

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Last Update: 2013-05-20