تحلیل فضایی مخاطرات محیطی

تحلیل فضایی مخاطرات محیطی

پیش‌بینی مکانی جنگل‌زدایی در جنگل‌های هیرکانی ایران: تلفیق عوامل اقلیمی، توپوگرافی و انسانی

نویسندگان
1 سازمان تحقیقات آموزش و ترویج کشاورزی
2 دانشکدە منابع طبیعی و علوم دریایی نور، مازندران
3 دانشگاه علوم کشاورزی گرگان
چکیده
پدیده جنگل‌زدایی یکی از چالش‌ها و مخاطرات اصلی در اکوسیستم‌های جنگلی از جمله جنگل‌های هیرکانی است که تحت تأثیر عوامل متنوع طبیعی و انسانی رخ می‌دهد. این مطالعه با هدف مدلسازی احتمال وقوع جنگل‌زدایی در حوزه جنگلداری لوه واقع در شمال ایران انجام شد. داده‌های این پژوهش شامل ۱۰۴ نقطه جنگل‌زدایی ثبت‌شده و ۱۴ متغیر تبیینی بود که از طریق تحلیل مکانی در محیط GIS و داده‌های اقلیمی، توپوگرافی و انسانی استخراج گردید. برای تحلیل رابطه بین متغیرها و پیش‌بینی احتمال جنگل‌زدایی، از دو مدل آماری شامل رگرسیون لجستیک و مدل جمعی تعمیم‌یافته استفاده شد. نتایج نشان داد که مدل جمعی تعمیم‌یافته با ضریب کاپای 84/0 و سطح زیر منحنی عملکرد برابر 956/0 عملکرد بهتری نسبت به مدل لجستیک داشته و توزیع واقع‌گرایانه‌تری از سطوح خطر ارائه داده است. متغیرهای فاصله از جاده، شیب، اثر باد و ارتفاع از سطح دریا بیشترین تأثیر را بر احتمال جنگل‌زدایی داشتند. بر اساس خروجی مدل GAM، حدود ۲۰ درصد منطقه در طبقه خطر بالا و بسیار بالا قرار گرفت. یافته‌ها حاکی از نقش تعیین‌کننده زیرساخت‌های دسترسی، فشار انسانی و عوامل اقلیمی در تسریع روند جنگل‌زدایی است. نتایج این پژوهش می‌تواند در اولویت‌بندی مداخلات حفاظتی، بازنگری در توسعه جاده‌ها و برنامه‌ریزی فضایی مؤثر برای مدیریت پایدار جنگل‌های شمال کشور مورد استفاده قرار گیرد.
کلیدواژه‌ها

عنوان مقاله English

Spatial Prediction of Deforestation in Iran’s Hyrcanian Forests: Integrating Climatic, Topographic, and Anthropogenic Factors

نویسندگان English

saeid shabani 1
behrooz mohseni 1
aiding kornejady 1
akram ahmadi 1
hassan faramarzi 2
esmaeil silakhori 3
1 AREEO
2 Faculty of Natural Resources and Marine Sciences, Noor, Mazandaran
3 gorgan university
چکیده English

Deforestation is one of the primary challenges and environmental threats facing forest ecosystems, including the Hyrcanian forests, and occurs under the influence of various natural and anthropogenic drivers. This study aimed to model the probability of deforestation occurrence within the Loveh forest management district located in northern Iran. The dataset comprised 104 documented deforestation points and 14 explanatory variables, derived through spatial analysis using GIS and environmental, topographic, and anthropogenic data. To assess the relationships among variables and predict the likelihood of deforestation, two statistical models were employed: logistic regression and the Generalized Additive Model (GAM). The results revealed that the GAM outperformed the logistic regression model, achieving a higher Kappa coefficient (0.84) and Area Under the Curve (AUC) value (0.956), and providing a more realistic spatial distribution of deforestation risk. The most influential variables included distance from roads, slope, wind effect, and elevation. Based on the GAM output, approximately 20% of the study area was categorized as high and very high risk. These findings underscore the pivotal role of access infrastructure, human pressure, and climatic factors in accelerating deforestation processes. The results of this study can serve as a scientific basis for prioritizing conservation interventions, reassessing road development policies, and enhancing spatial planning for sustainable forest management in northern Iran.

کلیدواژه‌ها English

probability of Occurrence
Road development
kappa coefficient
Human factors
sustainable management
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Knapp, M.; Strobl, M.; Venturo, A.; Seidl, M.; Jakubíkova, L.; Tajovský, K.; Kadlec, T.; and Gonzalez, E. (2022). Importance of grassy and forest non-crop habitat islands for overwintering of ground-dwelling arthropods in agricultural landscapes: A multi-taxa approach. Biological Conservation, 275, 109757. [DOI:10.1016/j.biocon.2022.109757]
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López-Bedoya, P. A.; Bohada-Murillo, M.; Ángel-Vallejo, M. C.; Audino, L. D.; Davis, A. L. V.; Gurr, G.; and Noriega, J. A. (2022). Primary forest loss and degradation reduces biodiversity and ecosystem functioning: A global meta-analysis using dung beetles as an indicator taxon. Journal of Applied Ecology, 59, 1572-1585. [DOI:10.1111/1365-2664.14167]
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Mirakhorlou, Kh.; and Akhavan, R. (2017). Area changes of Hyrcanian Forests during 2004 to 2016. Nature Iran, 2 (3), 40-45. https://doi:10.22092/irn.2017.112967 (in Persian)
034
Netzel, P.; Tyminska, L.; Feleha, D. D.; Socha, J. (2024). New approach to assess forest fragmentation based on multiscale similarity index. Ecological Indicators, 158, 111530. https://doi: 10.1016/j.ecolind.2023.111530 [DOI:10.1016/j.ecolind.2023.111530]
Chen, S.; Woodcock, C.; Dong, L.; Tarrio, K.; Mohammadi, D.; and Olofsson, P. (2024). Review of drivers of forest degradation and deforestation in Southeast Asia. Remote Sensing Applications: Society and Environment, 33, 101129, 11 pp.
Davison, C. W.; Rahbek, C.; and Morueta-Holme, N. (2021). Land-use change and biodiversity: Challenges for assembling evidence on the greatest threat to nature. Global Change Biology, 27, 5414-5429. https://doi:10.1111/gcb.15846
Ojoatre, S.; Zhang, C.; Yesuf, G.; and Rufino, M.C. (2023). Mapping deforestation and recovery of tropical montane forests of East Africa. Frontiers in Environmental Science, 11, 1084764. 17 pp. https://www.10.3389/fenvs.2023.1084764 [DOI:10.3389/fenvs.2023.1084764]
Dutt, S.; Batar, A. K.; Sulik, S.; and Kunz, M. (2024). Forest ecosystem on the edge: Mapping forest fragmentation susceptibility in Tuchola Forest, Poland. Ecological Indicators, 161: 111980.
FAO (Food and Agriculture Organization). (2020). Global Forest Resources Assessment 2020, (Iran Report). Rome, 54 pp. https://openknowledge.fao.org/server/api/core/bitstreams/70aae432-4a3e-4d96-9083-f0800bd959af/content
Sahana, M.; Hong, H.; Sajjad, H.; Liu, J.; and Zhu, A.X. (2018). Assessing deforestation susceptibility to forest ecosystem in Rudraprayag district, India using fragmentation approach and frequency ratio model. Science of the Total Environment, 627, 1264-1275. [DOI:10.1016/j.scitotenv.2018.01.290]
Feng, Y.; Yang, Q.; Tong, X.; and Chen, L. (2018). Evaluating land ecological security and examining its relationships with driving factors using GIS and generalized additive model. Science of the Total Environment, 633, 1469-1479. https://doi: 10.1016/j.scitotenv.2018.03.272
Foley, J. A.; DeFries, R.; Asner, G. P.; Barford, C.C.; Bonan, G.; Carpenter, S. R.; Chapin, F. S.; Coe, M. T.; Daily, G. C.; Gibbs, H.; Helkowski, J. H.; Holloway, T.; Howard, E.; Kucharik, C. J.; Patz, J.; Prentice, I. C.; Ramankutty, N.; and Snyder, P. K. (2005). Global consequences of land use. Science. Science, 309 (5734), 570-574. https://doi: 10.1126/science.11117
Sahana, M.; Hong, H.; Sajjad, H.; Liu, J.; and Zhu, A.X. (2018). Assessing deforestation susceptibility to forest ecosystem in Rudraprayag district, India using fragmentation approach and frequency ratio model. Science of the Total Environment, 627, 1264-1275. [DOI:10.1016/j.scitotenv.2018.01.290]
Hosonuma, N.; Herold, M.; Sy, V. D.; Fries, R. S. D.; Brockhaus, M.; Verchot, L.; Angelsen, A.; and Romijn, E. (2012). An assessment of deforestation and forest degradation drivers in developing countries. Environmental Research Letters, 7 (4), 044009. https://doi:10.1088/1748-9326/7/4/044009
Jellouli, O.; and Bernoussi, A.S. (2022). The impact of dynamic wind flow behavior on forest fire spread using cellular automata: Application to the watershed BOUKHALEF (Morocco). Ecological Modelling, 468, 109938.
Silva, A.C.O.; Fonseca, L.M.G.; Körting, T.S.; and Escada, M.I.S. (2020). A spatio-temporal Bayesian Network approach for deforestation prediction in an Amazon rainforest expansion frontier. Spatial Statistics, 35, 100393. [DOI:10.1016/j.spasta.2019.100393]
Kayet, N.; Pathak, K.; Kumar, S.; Singh, C.P.; Chowdary, V.M.; Chakrabarty, A.; Sinha, N.; Shaik, I.; Ghosh A. (2021). Deforestation susceptibility assessment and prediction in hilltop mining-affected forest region. Journal of Environmental Management, 112504.
Knapp, M.; Strobl, M.; Venturo, A.; Seidl, M.; Jakubíkova, L.; Tajovský, K.; Kadlec, T.; and Gonzalez, E. (2022). Importance of grassy and forest non-crop habitat islands for overwintering of ground-dwelling arthropods in agricultural landscapes: A multi-taxa approach. Biological Conservation, 275, 109757.
Silvério, D. V.; Brando, P. M.; Bustamante, M. M. C.; Putz, F. E.; Marra, D. M.; Levick, S. R.; and Trumbore, S. E. (2019). Fire, fragmentation, and windstorms: A recipe for tropical forest degradation. Journal of Ecology, 107 (2), 656-667. [DOI:10.1111/1365-2745.13076]
Laurance, W.F.; Goosem, M.; and Laurance, S.G.W. (2009). Impacts of roads and linear clearings on tropical forests. Trends in Ecology and Evolution, 24 (12), 659-669. https://doi:10.1016/j.tree.2009.06.009
Looze, B.E. (2009). Forest fragmentation patterns in Maine watersheds and prediction of visible crown diameter in recent undisturbed forest, MSc thesis, University of Wisconsin-Superior, 130 pp. https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=2772&context=etd
Tavares das Neves, P. B.; Blanco, C. J. C.; Duarte, A. A. A. M.; das Neves, F. B. S.; das Neves, L. B. S.; de Paula dos Santos, M. H. (2021). Amazon rainforest deforestation influenced by clandestine and regular roadway network. Land Use Policy, 108, 105510. [DOI:10.1016/j.landusepol.2021.105510]
López, S. 2022. Deforestation, forest degradation, and land use dynamics in the Northeastern Ecuadorian Amazon. Applied Geography, 145, 102749.
López-Bedoya, P. A.; Bohada-Murillo, M.; Ángel-Vallejo, M. C.; Audino, L. D.; Davis, A. L. V.; Gurr, G.; and Noriega, J. A. (2022). Primary forest loss and degradation reduces biodiversity and ecosystem functioning: A global meta-analysis using dung beetles as an indicator taxon. Journal of Applied Ecology, 59, 1572-1585.
Worku, A. (2023). Review on drivers of deforestation and associated socio-economic and ecological impacts. Advances in Agriculture. Food Science and Forestry, 11 (1), 1-12. https://creativecommons.org/licenses/by-nc-nd/4.0/
Yakhkeshi, A.; and Aftabtalab, N. (2008). Renewable resources and sustainable development. Department of Environment press, 176 pp. (in Persian)
Mirakhorlou, Kh.; and Akhavan, R. (2017). Area changes of Hyrcanian Forests during 2004 to 2016. Nature Iran, 2 (3), 40-45. https://doi:10.22092/irn.2017.112967 (in Persian)
Yamamoto, Y.; Shigetomi, Y.; Ishimura, Y. and Hattori, M. (2019). Forest change and agricultural productivity: Evidence from Indonesia. World Development, 114, 196-207. https://ideas.repec.org/a/eee/wdevel/v114y2019icp196-207.html [DOI:10.1016/j.worlddev.2018.10.001]
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