Assessment of Inverse Distance Weighting (IDW) Interpolation on Spatial Variability of Selected Soil Properties in the Cukurova Plain

4区农林科学

Tarim Bilimleri Dergisi-journal of Agricultural Sciences Pub Date : 2016-08-25 DOI:10.1501/TARIMBIL_0000001396

T. Tunçay, İ. Bayramin, Fırat Atalay, I. Ünver

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引用次数: 18

Abstract

This study attempts to evaluate interpolation technique for mapping spatial distribution of some soil characteristics at the Lower Seyhan River Basin in Cukurova (Turkey). These soil characteristics may help to improve agricultural land management practices. In the study area, 7 parallel transects each having 150 m of length were selected at 5 m intervals, and 104 soil samples were collected. In these samples, calcium carbonate, organic matter, cation exchange capacity and clay content (from particle size distribution) were determined. Inverse distance weighting (IDW) interpolation and employing of GIS technology were applied on the results. Calcium carbonate, organic matter, cation exchange capacity and clay content values derived from IDW interpolation were consistent with the results of the soil analysis. The verity of the interpolation technique was tested by employing cross validation. Interpolation of organic matter values showed a high mean error in 30-60 cm depth (2.82%) while this high deviation was not the case with the other parameters studied.

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库库罗娃平原土壤属性空间变异性的IDW插值评价

本研究试图评价在土耳其库库罗娃塞汉河下游流域一些土壤特征空间分布的插值技术。这些土壤特征可能有助于改善农业用地管理做法。在研究区内，每隔5 m选取7条长度为150 m的平行样带，共采集土壤样品104份。在这些样品中，测定了碳酸钙、有机质、阳离子交换容量和粘土含量(从粒度分布)。对结果进行了距离逆加权插值和GIS技术的应用。IDW插值得到的碳酸钙、有机质、阳离子交换容量和粘土含量值与土壤分析结果一致。通过交叉验证，验证了插值方法的正确性。有机质值插值在30 ~ 60 cm深度有较高的平均误差(2.82%)，而在其他参数的插值中没有较高的误差。

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来源期刊

Tarim Bilimleri Dergisi-journal of Agricultural Sciences 农林科学-农业综合

CiteScore

1.40

自引率

0.00%

发文量

期刊介绍： Journal of Agricultural Sciences (JAS) is an international, double-blind peer-reviewed, open-access journal, published by the Faculty of Agriculture, Ankara University. The journal invites original research papers containing new insight into any aspect of Agricultural Sciences that are not published or not being considered for publication elsewhere. Preliminary, confirmatory or inconclusive research, review articles, case and local studies and works presenting taxonomy will not be published.