Investigating the Quantitative Trend of Land Changes in Kermanshah Province (Case Study: Gharesou and Mereg Watershed (in years 1984, 2000, and 2016))

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Mardani Yaghouti Fatemeh; Khanmohammadi Mehrdad; KARAMI PEYMAN

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Journal: JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY Year:2019 | Volume:21 | Issue:7 (86) Page(s): 161-176

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Title

Investigating the Quantitative Trend of Land Changes in Kermanshah Province (Case Study: Gharesou and Mereg Watershed (in years 1984, 2000, and 2016))

Author(s)

Mardani Yaghouti Fatemeh | Khanmohammadi Mehrdad | KARAMI PEYMAN | Issue Writer Certificate

Keywords

Landscape changesQ1

Land useQ1

Gharesou and Mereg WatershedQ2

FragmentationQ1

Kermanshah provinceQ1

Abstract

Background and Objectives: Human activities change land cover at unprecedented speeds and large spatial scales. The rapid changes in ecosystems in recent decades have been more along all the human history and have led to unprecedented changes in ecosystems and environmental performance at local, regional and global scales. This research aims to investigate the process of landscape quantitative changes in Gharesou and Mereg Watersheds. Investigation method: For monitoring changes, Landsat satellite imagery of 1984 (TM), 2000 (ETM+) and 2016 (OLI-TIRS) were used. The classification was performed using Artificial Neural Network (ANN) model. Land cover was classified into seven categories. Metrics PLAND, NP (Number of Patch), PD (Patch Density), and ED (Edge Density) at the Level of Class, NP, LPI (Largest Patch Index), CONTAG (Contagion), and SHDI (Shannon's diversity index) were calculated at the level of Landscape for the study area. Results: The results indicate that the highest percentage of the land cover belongs to agricultural lands and then medium rangelands. The numbers of patches of agricultural land in the period of 1984-2004 has increased due to the conversion of rangelands to agricultural lands and then between years 2000-2016 have decreased due to the conversion to medium ranges with a lesser rate. The number of forest patches in the first period has decreased because of conversion to medium rangelands and increased during the second period. Conclusion: The study of the landscape metrics indicates the increase in continuity, the reduction of Fragmentation and diversity in the first time period, and in contrast, in the second time period, continuity has decreased and Fragmentation and diversity have increased. Given the fact that the process of Landscape changes varies over two different periods, it can generally be noted that the Fragmentation and diversity of the landscape have declined and the spatial continuity has increased.

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APA: Copy

Mardani Yaghouti, Fatemeh, Khanmohammadi, Mehrdad, & KARAMI, PEYMAN. (2019). Investigating the Quantitative Trend of Land Changes in Kermanshah Province (Case Study: Gharesou and Mereg Watershed (in years 1984, 2000, and 2016)). JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY, 21(7 (86) ), 161-176. SID. https://sid.ir/paper/362679/en

Vancouver: Copy

Mardani Yaghouti Fatemeh, Khanmohammadi Mehrdad, KARAMI PEYMAN. Investigating the Quantitative Trend of Land Changes in Kermanshah Province (Case Study: Gharesou and Mereg Watershed (in years 1984, 2000, and 2016)). JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY[Internet]. 2019;21(7 (86) ):161-176. Available from: https://sid.ir/paper/362679/en

IEEE: Copy

Fatemeh Mardani Yaghouti, Mehrdad Khanmohammadi, and PEYMAN KARAMI, “Investigating the Quantitative Trend of Land Changes in Kermanshah Province (Case Study: Gharesou and Mereg Watershed (in years 1984, 2000, and 2016)),” JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY, vol. 21, no. 7 (86) , pp. 161–176, 2019, [Online]. Available: https://sid.ir/paper/362679/en

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