Application of Ordinary Kriging in Mapping Soil Organic Carbon in Zambia

被引:0
|
作者
Chabala, Lydia Mumbi [1 ]
Mulolwa, Augustine [2 ]
Lungu, Obed [1 ]
机构
[1] Univ Zambia, Sch Agr Sci, Dept Soil Sci, POB 32379, Lusaka, Zambia
[2] Univ Zambia, Sch Engn, Dept Geomat Engn, Natl Remote Sensing Ctr, POB 32379, Lusaka, Zambia
关键词
exponential semivariogram; geographical distribution; geostatistical procedure; oxidizable carbon; spatial autocorrelation;
D O I
10.1016/S1002-0160(17)60321-7
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
The quantification of the pattern and spatial distribution of soil organic carbon (SOC) is fundamental to understand many ecosystem processes. This study aimed to apply ordinary kriging (OK) to model the spatial distribution of SOC in a selected part of Zambia. A total of 100 soil samples were collected from the study area and analyzed for SOC by determining soil oxidizable carbon using the Walkley-Black method. An automated fitting procedure was followed when modeling the spatial structure of the SOC data with the exponential semivariogram. The results indicated that the short range spatial dependence of SOC was strong with a nugget close to zero. The spatial autocorrelation was high to medium with a nugget to sill ratio of 0.25. The root mean square error of the predictions was 0.64, which represented 58.18% of the mean observed data for SOC. It can be concluded that the generated map could serve as a proxy for SOC in the region where evidence of spatial structure and quantitative estimates of uncertainty are reported. Therefore, the maps produced can be used as guides for various uses including optimization of soil sampling.
引用
收藏
页码:338 / 343
页数:6
相关论文
共 50 条
  • [21] Comparing Ordinary Kriging and Regression Kriging for Soil Properties in Contrasting Landscapes
    Zhu, Q.
    Lin, H. S.
    PEDOSPHERE, 2010, 20 (05) : 594 - 606
  • [22] Comparing Ordinary Kriging and Regression Kriging for Soil Properties in Contrasting Landscapes
    Q.ZHU and H.S.LIN*2 Department of Crop and Soil Sciences
    Pedosphere, 2010, 20 (05) : 594 - 606
  • [23] Mapping Soil Electrical Conductivity Using Ordinary Kriging Combined with Back-propagation Network
    Huang Yajie
    Li Zhen
    Ye Huichun
    Zhang Shiwen
    Zhuo Zhiqing
    Xing An
    Huang Yuanfang
    CHINESE GEOGRAPHICAL SCIENCE, 2019, 29 (02) : 270 - 282
  • [24] Mapping Soil Electrical Conductivity Using Ordinary Kriging Combined with Back-propagation Network
    HUANG Yajie
    LI Zhen
    YE Huichun
    ZHANG Shiwen
    ZHUO Zhiqing
    XING An
    HUANG Yuanfang
    Chinese Geographical Science, 2019, 29 (02) : 270 - 282
  • [25] Mapping soil organic carbon content over New South Wales, Australia using local regression kriging
    Somarathna, P. D. S. N.
    Malone, B. P.
    Minasny, B.
    GEODERMA REGIONAL, 2016, 7 (01) : 38 - 48
  • [26] Mapping soil organic carbon in northern France using adaptive zoning regression kriging based on LUCAS dataset
    Wang, Xiaomi
    Liu, Jiuhong
    Chen, Yiyun
    Liu, Leilei
    Wu, Zihao
    GEOCARTO INTERNATIONAL, 2024, 39 (01)
  • [27] Mapping Soil Electrical Conductivity Using Ordinary Kriging Combined with Back-propagation Network
    Yajie Huang
    Zhen Li
    Huichun Ye
    Shiwen Zhang
    Zhiqing Zhuo
    An Xing
    Yuanfang Huang
    Chinese Geographical Science, 2019, 29 : 270 - 282
  • [28] Mapping Soil Electrical Conductivity Using Ordinary Kriging Combined with Back-propagation Network
    HUANG Yajie
    LI Zhen
    YE Huichun
    ZHANG Shiwen
    ZHUO Zhiqing
    XING An
    HUANG Yuanfang
    Chinese Geographical Science , 2019, (02) : 270 - 282
  • [29] Ordinary Kriging Interpolation and Smoothing Effect Correction for Soil Texture Mapping in Hetao Irrigation District
    Wan H.
    Qi H.
    Shang S.
    Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery, 2023, 54 (01): : 340 - 350
  • [30] Comparison of interpolated soil nutrients maps obtained with application of various approaches of ordinary kriging
    Smirnova, E., V
    Giniyatullin, K. G.
    Sahabiev, I. A.
    Okunev, R., V
    III INTERNATIONAL SCIENTIFIC CONFERENCE: AGRITECH-III-2020: AGRIBUSINESS, ENVIRONMENTAL ENGINEERING AND BIOTECHNOLOGIES, PTS 1-8, 2020, 548