Development of Oil Fields in Connection with the Dynamics of the Agricultural Land Use Structure (the Orenburg Region is an Example)
DOI:
https://doi.org/10.17308/geo/1609-0683/2023/4/131-139Keywords:
steppe zone, oil production, agricultural land use, technogenic impact, disturbed lands, arable land, reduction of active use, Orenburg regionAbstract
The purpose of the study is to analyze the functioning of plowed lands located in close to oil fields with a long development period (the Orenburg region is an example). Materials and methods. The research was carried out on five plots with an area around 100 square kilometers each. All plots allocated in the Orenburg region – a key part of the Volga-Ural steppe oil and gas region. Agricultural production and oil production are carried out simultaneously at three out of five plots. For objective conclusions, two reference plots characterized by intensive agricultural activity in the absence of oil production were additionally examined. The dynamics of plowed sown fields, the development of oilfield infrastructure and the area of disturbed lands were revealed on the basis of a long-term series of multi-scale satellite images (1989-2019). For three time slices, the area of arable land was calculated, a decrease in the activity of its use was revealed, and the proportion of land disturbed by oil production within the studied agricultural fields was estimated. Results and discussion. It is shown that in key plots with intensive oil production, there was a decrease in the active use of part of the plowed lands (up to 40 %). Chronologically, such a decrease in activity coincides with the period of growth of technogenic impact, primarily with the expansion of the area of disturbed land during the operation of the field. It is assumed that there is a critical value of the share of disturbed lands within the boundaries of an agricultural field, when exceeding which there is a decrease in active use in the field. For the studied data array, the desired indicator was 6 %. Conclusion. The probability of reducing the active use of agricultural fields is proportional to the increase in the area of disturbed land during the technogenic impact.
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