Monitoring and Assessing the Changes in the Coverage and Decline of Oak Forests in Lorestan Province using Satellite Images and BFAST Model

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SHIRAVAND HENGAMEH; KHALEDI SHAHRIAR; BEHZADI SAEED; Shokri Sanjabi Hojjat Allah

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Journal: JOURNAL OF GEOGRAPHICAL SCIENCES Year:2020 | Volume:20 | Issue:57 Page(s): 265-280

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Title

Monitoring and Assessing the Changes in the Coverage and Decline of Oak Forests in Lorestan Province using Satellite Images and BFAST Model

Author(s)

SHIRAVAND HENGAMEH | KHALEDI SHAHRIAR | BEHZADI SAEED | Shokri Sanjabi Hojjat Allah | Issue Writer Certificate

Keywords

OakQ1

Satellite imagesQ1

DeclineQ1

LorestanQ2

BFASTQ1

Abstract

Decline phenomenon is one of the most important reasons for the destruction and mortality of Oak trees in Zagros forests due to the wide variety and diversity of the topography of its determination through track and field operations is not readily possible. Changes in an ecosystem are often gradual changes, but sometimes changes occur in an ecosystem in a short time. This change can cause a catastrophe in the ecosystem, which is difficult to identify. A proposed method for identifying a general change in time series is use the BFAST model, which, by analyzing the time series in the process, season, and residual components, identifies the changes in the time series and also repeatedly estimates the time and amount of the changes, and The path and amount of variation in this study, using this model and Satellite images to monitor and evaluate the changes in coverage and Decline of Oak forests in Lorestan province during the statistical period (2000-2017). The results showed that more than 42804 hectares (1. 5%) of the Oak forests of the province were lost due to the Decline phenomenon during the studied period. Also, according to the BFAST method, the trend diagram is a failover and their frequency variations are irregular. Comparison and study of different forest coverings also showed a decrease in NDVI, which indicates that the process of decreasing forest cover is inclusive. The study of autocorrelation and Kendal coefficient showed that there were significant changes and severity of failure (-0. 7) in the area Study. The seasonal chart also has uneven and irregular variations due to changes in Oak forests in the region. The results of this research can be used to study the changes in the coverage of Oak forests in the area and management and the way to think about this phenomenon.

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APA: Copy

SHIRAVAND, HENGAMEH, KHALEDI, SHAHRIAR, BEHZADI, SAEED, & Shokri Sanjabi, Hojjat Allah. (2020). Monitoring and Assessing the Changes in the Coverage and Decline of Oak Forests in Lorestan Province using Satellite Images and BFAST Model. JOURNAL OF GEOGRAPHICAL SCIENCES, 20(57 ), 265-280. SID. https://sid.ir/paper/407783/en

Vancouver: Copy

SHIRAVAND HENGAMEH, KHALEDI SHAHRIAR, BEHZADI SAEED, Shokri Sanjabi Hojjat Allah. Monitoring and Assessing the Changes in the Coverage and Decline of Oak Forests in Lorestan Province using Satellite Images and BFAST Model. JOURNAL OF GEOGRAPHICAL SCIENCES[Internet]. 2020;20(57 ):265-280. Available from: https://sid.ir/paper/407783/en

IEEE: Copy

HENGAMEH SHIRAVAND, SHAHRIAR KHALEDI, SAEED BEHZADI, and Hojjat Allah Shokri Sanjabi, “Monitoring and Assessing the Changes in the Coverage and Decline of Oak Forests in Lorestan Province using Satellite Images and BFAST Model,” JOURNAL OF GEOGRAPHICAL SCIENCES, vol. 20, no. 57 , pp. 265–280, 2020, [Online]. Available: https://sid.ir/paper/407783/en

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