بررسی تغییرات پوشش گیاهی و کاربری اراضی در محدوده تالاب بین المللی گمیشان

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشگاه علوم کشاورزی و منابع طبیعی ساری

2 دانشگاه علوم کشاورزی و منابع طبیعی گرگان

چکیده

مطالعه حاضر با هدف بررسی تغییرات پوشش گیاهی و کاربری اراضی در محدوده تالاب بین المللی گمیشان استان گلستان در بازه زمانی 2016-1994 انجام شده است. جهت نمونه‌‌برداری پوشش مرتعی پس از تعیین تیپ‌‌های گیاهی، با استفاده از 6 ترانسکت 100 متری و 15 پلات 1مترمربعی، پوشش گیاهی نمونه‌‌برداری شد. مقایسه داده‌‌‌‌های به دست آمده در نرم افزار SPSS 16 با استفاده از آزمون t جفتی صورت گرفت. جهت استخراج کاربری‌‌های اراضی حاشیه تالاب گمیشان از داده‌‌های ماهواره لندست استفاده و نقشه کاربری اراضی منطقه در دو مقطع زمانی تهیه شده است. نتایج حاصل از تهیه نقشه کاربری‌‌ها نشان داد که میزان آب دریا در اطراف تالاب از سال 1994 تا 2016 کاهش یافته و در عین حال کاربری بخش زراعت در اطراف تالاب افزایش یافته است. بطوری که از سال 1994 تا 2016، 87/0 درصد از مساحت آب کاهش یافته و به سایر کاربری‌‌ها تبدیل شده است. بر اساس بررسی تغییرات کاربری اراضی در دوره زمانی مورد مطالعه، میزان مرتع و اراضی کشاورزی در سال 2016 نسبت به سال 1994 به ترتیب 62/1 و 08/1 درصد افزایش داشته است. همچنین مقایسه درصد پوشش گونه‌‌های گیاهی غالب مرتعی در منطقه نشان داد که گونه‌های Halostachys caspica، Holocnemumstrobilaceum، Lophochloa phleoidess،Frankenia hirsute  و Salicornia herbaceaافزایش معنی‌‌داری در سطح 5 درصد نسبت به سال 1994 داشته‌‌اند.

کلیدواژه‌ها


عنوان مقاله [English]

Investigation of Vegetation and Land Use Changes in International Gomishan Wetlands Area

نویسندگان [English]

  • Mohammadreza Tatian 1
  • Sara Mottahedi 1
  • reza tamartash 1
  • Mousa Akbarlou 2
1 Sari Agricultural Science and Natural Resources University
2 Gorgan Agricultural Sciences and Natural Resources University
چکیده [English]

The objective of this study was to investigate the vegetation changes and land use in the international Gomishan wetland area in Golestan province during 1994-2016. For rangelands sampling, after determination of vegetation types, the sampling was done using 6 transects of 100 meters and 15 plots of 1 m2. The data were analyzed using SPSS 16 and t-test (paired). Landsat satellite TM data was used and the land use map of the area was prepared in two time period. The results of the land uses mapping showed that the amount of sea water around the wetland decreased from 1994 to 2016, while the use of the agricultural lands increased around the wetland. So that, 0.87% of the water area has fallen to other uses from1994 to 2016. Based on the information of land use changes in this period, the amount of rangelands and agricultural lands increased 1.62% and 1.08% in 2016 compared to 1994. Also, the comparison of the coverage of rangelands dominant plants showed that Halostachys caspica, Holocnemum strobilaceum, Lophochloa phleoidess, Frankenia hirsute and Salicornia herbacea in 2016 increased significantly with a 5% significant level compared to 1994.

کلیدواژه‌ها [English]

  • Gomishan Wetland
  • Vegetation cover
  • Remote Sensing (RS)
  • land use
  • Landsat
Akbarlou, M. 1994. Vegetation analysis of saline and alkaline habitats in east of Mazandaran Province. Msc. Thesis of Range Management, Gorgan University of Agricultural Science and Natural Resources. (In Persian)
Asadi, A.; Barati, A. A. & Kalantari, K. 2014. Analyzing and Modeling the Impacts of Agricultural Land Conversion in Iran. The Business & Management Review,4(4): 110-118.
Azadi, H.; Barati, A. A.; Rafiaani, P.; Raufirad, V.; Zarafshani, K.; Mamoorian, M.; Van Passel, S. & Lebailly, P. 2015. Agricultural land conversion drivers in Northeast Iran: application of structural equation model. Applied Spatial Analysis and Policy; 1-19.
Barati, A. A.; Asadi, A.; Kalantari, K.; Azadi, H. & Witlox, F. 2015. Agricultural Land Conversion in Northwest Iran. International Journal of Environmental Research. 9(1): 281-290.
Dingle Robertson, L.; King, D. J. & Davies, C. 2015. Assessing land cover change and anthropogenic disturbance in wetlands using vegetation fractions derived from Landsat 5 TM imagery (1984–2010). Journal of Wetlands. 35: 1077–1091.
Falahatkar, S. & Hosseini, S. M. 2017. Predicting of hot points of Co2 dispersion due to land use changes. Journal of Natural Environment, 70(1): 139-148. (In Persian)
FAO. 2012. FAOStatistical Yearbook. Rome, FAO.
Fattahi, M. 1994. Investigation of Oak forest in Zagros and their disturbance factors. Research Institute of Forests and Rangelands Press. (In Persian)
Gandhi, M.; Parthiban, S.; Thummalu, N. & Christy, A. 2015. NDVI: Vegetation change detection using remote sensing and GIS: A case study of Vellore District. Procedia Computer Science. 57: 1199-1210.
Gashaw, T.; Fentahun, T. & Dinkayoh, T. 2014. Detection of vegetation changes using GIS techniques in North Ethiopia. Merit Research Journal. 2(6): 77-80.
Ghorbani, R.; Taghipour, A. & Mahmoudzadeh, H. 2012. Evaluating and analysis of land use changes in Alagol, Almagol and Agigol wetlands of Torkman-Sahra using multi temporal satellite photos. Journal of Geographic and Environment Planning, 23(4): 167-186. (In Persian)
Heshmati, G. 2003. Effects of environmental factors on rangeland species establishment and development using multivariate analysis. Journal of Natural Resources, 56(3); 309-320. (In Persian)
Karimi, Z. 2010. Investigation of flora and vegetation of Gomishan international wetland. Iranian Journal of Biology, 23(3): 436-447. (In Persian)
Kazemi, R. & Bayat, R. 2017. Investigation of land use changes on minimum flow indices (Case study: Taleghan Basin). Journal of Water and Soil Conservation Researches, 24(1): 287-294. (In Persian)
Koshal. A. K. 2010. Indices based salinity areas detection through remote sensing & GIS in parts of south west Punjab.13th International Map Indi Conference. Punjab.
Matsushita, B.; Yang, W.; Chen, J.; Onda, Y. & Qiu, G. 2007. Sensitivity of the Enhanced Vegetation Index (EVI) and Normalized Difference Vegetation Index (NDVI) to topographic effects: A case study in high-density Cypress forest. Sensors. 7(11): 2636-2651.
Mohammadzadeh, SH.; Sedighi, H.; Pezeshki Rad, GH.; Makhdom, M. & Sharifi Kia, M. 2014. Analyzing the impacts of changing agronomic land use to orchard from the viewpoint of orchardist in the west of Urmia lake basin. Iranian Journal of Agricultural, Economics and Development Research, 45(4): 775-785. (In Persian)
Mombeni, M.; Nasrollahi, M.; Karimi, K. & Ara, H. 2018. Investigation and comparison of the maximum likelihood and fuzzy artmap methods in preparing and monitoring land use changes (Case study; Omidiyeh, Khuzestan province). Iranian Journal of Range and Desert Research, 25(2): 248-262. (In Persian)
Moradi, A. R.; Jafari, M.; Arzani, H. & Ebrahimi, M. 2016. Assessment of land use changes into dry land using satellite images and geographical information system. Journal of RS & GIS Techniques for Natural Resources, 7(1): 89-100. (In Persian)
Pender, J.; Nkonya, E.; Japper, P.; Scerunkuuma, D. & Ssali, H. 2004. Strategies of increase agricultural productivity land degradation: evidence from Uganda. Agricultural Economics. 31(2/3):181-195.
Sobhanian, H.; Motamed, N.; Rastgar Jazii, F.; Razavi, K.; Niknam, V. & Komatsu, S. 2010. Salt stress responses of a halophytic grass Aeluropus lagopoides and subsequent recovery. Russian Journal of Plant Physiology. 57(6): 784-791.
Tahir, M.; Imam, E. & Hussain, T. 2013. Evaluation of land use/land cover changes in Mekelle City, Ethiopia using Remote Sensing and GIS. Computational Ecology and Software. 3(1): 9-16.
Tondravan, M.; Darvishi, A. & Fakheran, S. 2015. Monitoring of land use changes in wetlands for environment conservation (Case study: Chaghakhor wetland of Charmahal Bakhtiari Province). Water Resources and Development Journal, 3(1): 129-137. (In Persian)
Toshani, Y. 2015. Investigation of climate change effect on Golestan rainfall. Msc. Thesis of Range Management, Gorgan University of Agricultural Science and Natural Resources. (In Persian)
Valbuena, D.; Verburg, P. H.; Bregt, A.K. & Ligtenberg, A. 2010. An agent-based approach to model land-use change at a regional scale. Landscape Ecology. 25: 185-199.
Zebardast, L. & Jafari, H. 2011. Evaluation of Anzali wetland changes using remote sensing and presentation of management method. Journal of Environmental Studies, 37(57): 57-64. (In Persian)
Zorrilla-Miras, P.; Paloma, I.; Gómez-Baggethun, E.; Martín-López, B .; Lomas, P.L. & Montes, C. 2014. Effects of land-use change on wetland ecosystem services: A case study in the Doñana marshes (SW Spain). Landscape and Urban Planning. 122: 160-174.