Spatial variability of soil nutrients in Juglans regia plantations in depressions between karst hills

DOI

10.2991/aeece-15.2015.68How to use a DOI?

Keywords

coefficient of variation, geostatistical analysis, Kriging interpolation, spatial heterogeneity, walnut

Abstract

To understand the spatial variability of soil nutrients in plantation forest in depressions between karst hills, we examined the characteristics and spatial variability of soil nutrients in Juglans regia plantation in Fengshan County, Southwest China. Most soil nutrients had moderate variability, and coefficients of variation for eight soil chemical characteristics differed according to stand age. All soil nutrient data were normally distributed and could be fitted to Gaussian, spherical, and exponential models, and nutrients showed strong spatial dependence and patterns that differed according to stand age. The distribution of soil nutrients was mainly affected by topography and habitat characteristics (elevation, slope, slope aspect, slope location, and bare rock cover). Our results suggest that stand age as a temporal factor and topography as a spatial factor contribute to patterns of soil nutrients in depressions between karst hills of Southwest China.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Qiujin Tan
AU  - Fuping Zeng
AU  - Haisheng Chen
AU  - Zhenshi Qin
AU  - Hu Du
AU  - Wenlin Wang
AU  - Hao Zhang
PY  - 2015/09
DA  - 2015/09
TI  - Spatial variability of soil nutrients in Juglans regia plantations in depressions between karst hills
BT  - Proceedings of the International Conference on Advances in Energy, Environment and Chemical Engineering
PB  - Atlantis Press
SP  - 336
EP  - 343
SN  - 2352-5401
UR  - https://doi.org/10.2991/aeece-15.2015.68
DO  - 10.2991/aeece-15.2015.68
ID  - Tan2015/09
ER  -