SALINE AND ALKALINE SOIL MAPPING USING ETM+ DATA IN THE QAZVIN PLAIN

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KHODADADI M.; ASKARI M.S.; SARMADIAN F.; HEIDARI A.; REFAHI H.; NOROZI A.A.; MATINFAR H.R.

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Journal: Year:2008 | Volume:21 | Issue:3 (80 IN AGRONOMY AND HORTICULTURE) Page(s): 77-90

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Title

SALINE AND ALKALINE SOIL MAPPING USING ETM+ DATA IN THE QAZVIN PLAIN

Author(s)

Keywords

SALINE SOILSQ3

ETM+Q3

TASSELED CAPQ3

INDICESQ3

DEMQ3

REMOTE SENSINGQ2

GISQ3

Abstract

Salinity and alkalinity are the major factors of soil degradation semiarid and arid area. The main aim of this study was to evaluate the capability of landsat ETM+ data for soil Salinity and alkalinity mapping in the selected part of the Qazvin plain, an area of arid environment. In this study spectral classes carried out of remotely sensed data and with the help of field observation and soil analysis regrouped to soil salinity and sodicity classes. Finally soil salinity and sodicity map carried out. Soil sampling was implemented using stratified random sampling method, depending on landscape complexity and homogeneity as well as on the representativity to landsat ETM data. Also in each soil map unit at least one profile was studied for subsoil salinity variation. Field samples from augur and profiles were analyzed in laboratory for Na+, Ca2+, Mg2+ cations, as well as soil texture, ECe and pH. We have analyzed the effectiveness of additional data such as digital elevation model and slop may improve the accuracy of classification. Also NDVI, SRVI, PVI, SAVI, SI, BI and NDSI INDICES, PCA and TASSELED CAP as well as analyzed. Soil salinity map of each selected bands produced and with ground truth map crossed. The results indicated that combination of DEM with them ETM bands has highest accuracy. This study addressed that thermal band of ETM increased the classification accuracy which illustrated its effective role to classify the soil salinity and sodicity. TASSELED CAP and INDICES had almost high accuracy, among studied image processing techniques. The optimum index factor had low overall accuracy. Also results showed that smooth crusts with out cracks caused increases the reflection. The accuracy of sodicity map was less than salinity map. The accuracy of moderate sodicity levels was less than with low and high sodicity levels.

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APA: Copy

KHODADADI, M., ASKARI, M.S., SARMADIAN, F., HEIDARI, A., REFAHI, H., NOROZI, A.A., & MATINFAR, H.R.. (2008). SALINE AND ALKALINE SOIL MAPPING USING ETM⁺DATA IN THE QAZVIN PLAIN. PAJOUHESH-VA-SAZANDEGI, 21(3 (80 IN AGRONOMY AND HORTICULTURE)), 77-90. SID. https://sid.ir/paper/19173/en

Vancouver: Copy

KHODADADI M., ASKARI M.S., SARMADIAN F., HEIDARI A., REFAHI H., NOROZI A.A., MATINFAR H.R.. SALINE AND ALKALINE SOIL MAPPING USING ETM⁺DATA IN THE QAZVIN PLAIN. PAJOUHESH-VA-SAZANDEGI[Internet]. 2008;21(3 (80 IN AGRONOMY AND HORTICULTURE)):77-90. Available from: https://sid.ir/paper/19173/en

IEEE: Copy

M. KHODADADI, M.S. ASKARI, F. SARMADIAN, A. HEIDARI, H. REFAHI, A.A. NOROZI, and H.R. MATINFAR, “SALINE AND ALKALINE SOIL MAPPING USING ETM⁺DATA IN THE QAZVIN PLAIN,” PAJOUHESH-VA-SAZANDEGI, vol. 21, no. 3 (80 IN AGRONOMY AND HORTICULTURE), pp. 77–90, 2008, [Online]. Available: https://sid.ir/paper/19173/en

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