Detection and Monitoring of Temporal Changes and Distribution of Cultivable Lands in Shahr-e-Kord Plain; Using Landsat and Sentinel-2 Data

Document Type : Research Paper

Authors

1 Department of Geography and Rural Planning, Faculty of Geographical Sciences and Planning, University of Isfahan, Isfahan, Iran.

2 Dept. of Geography and Rural Planning, Faculty of Geographical Sciences and Planning, University of Isfahan, Isfahan, Iran

3 Soil and Water Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran

10.22059/jdesert.2023.97738

Abstract

The use of accurate and up
to date information is crucial for sustainable resource
management in agriculture. Satellite imagery provides the opportunity for the
comprehensive monitoring of resources, and enables precise planning not only
for rural developm ent and agricultural sectors but also for national development
programs and the implementation of food and water security policies in the
country. It also helps prevent land use changes and their degradation. In this
research, an attempt has been made to c alculate the cultivable land area in Shahr
e Kord Plain located in Chaharmahal va Bakhtiari Province. The imagery data of
Landsats 7 8 and Sentinel 2 satellites were obtained in the form of NDVI index
during the period from 2013 to 2022 , which processed an d validly classified using
unsupervised algorithms in GIS environment. All existing features was
differentiated based on digital number values and green area surfaces identified
for different time periods. The sound and secure areas of cultivation were
con sidered based on the frequencies of plantation during the 2013 2022 . Average
of the agricultural lands approximated 9,392 ha. Due to recurrent water shortages
in recent years, only about 2,603 ha of agricultural lands in the study region have
been under pe rmanent cultivation over the 8 year study period and the rest have
been abandoned over time or left for fallow and livestock grazing. Accordingly,
as a basis for the integrated land water crop system planning and recommending
policy for conservation of per manently cultivable land resources in the
agricultural system of the region, the map of their spatiotemporal distribution was
prepared and presented with a pixel specific precision, by different years of
cultivation.

Keywords

References

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Desert
Volume 28, Issue 2
December 2023
Pages 317-328

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