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بررسی تأثیرخشکسالی درتغییرات پوشش گیاهی مرتعی و جنگلی استان چهار محال و بختیاری با استفاده از داده های سنجنده مودیس | ||
| تحقیقات حمایت و حفاظت جنگلها و مراتع ایران | ||
| مقاله 8، دوره 15، شماره 1 - شماره پیاپی 29، شهریور 1396، صفحه 91-108 اصل مقاله (1.4 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijfrpr.2017.113337 | ||
| نویسندگان | ||
| لیلا یغمایی1؛ سعید سلطانی2؛ رضا جعفری3؛ حسین بشری4؛ حسن جهانبازی گوجانی5 | ||
| 1دانشجوی دکتری، دانشگاه صنعتی اصفهان | ||
| 2استاد، گروه مرتع و آبخیزداری، دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان، ایران | ||
| 3دانشیار، گروه مرتع و آبخیزداری، دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان، ایران | ||
| 4استادیار، گروه مرتع و آبخیزداری، دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان، ایران | ||
| 5استادیار پژوهش، مرکز تحقیقات کشاورزی و منابع طبیعی چهارمحال و بختیاری، شهرکرد، ایران | ||
| چکیده | ||
| هدف از این مطالعه بررسی رابطه تغییرات پوشش گیاهی و نوسانات ویژگیهای اقلیمی مانند بارندگی و پدیده خشکسالی با استفاده از تصاویر ماهوارهای مودیس در طول سالهای 1379-1393 در استان چهارمحال و بختیاری میباشد. بهمنظور بررسی میزان تأثیر بارش و خشکسالی بر تغییرات پوشش گیاهی در32 ایستگاه سینوپتیک، اقلیمشناسی و بارانسنجی داخل و اطراف استان، ،شاخص SPI در دورههای زمانی کوتاه مدت (سه، شش و نه ماهه) و بلندمدت (12 و 24 ماهه) محاسبه شد. تمامی مقیاسهای زمانی منتهی به اوایل خرداد (ماه می) یعنی ماه حداکثر رویش پوشش گیاهی استان چهارمحال و بختیاری میباشد. بدینمنظور، نقشههای گستره خشکسالی و تصاویر شاخصNDVI در مقیاسهای مختلف زمانی (سالیانه، فصلی) با استفاده از روش میانیابی کریجینگ تهیه و روش رگرسیون خطی برای پایش تغییرات پوشش گیاهی در اثر نوسانات بارندگی و خشکسالی استفاده شد. بررسی تغییرات شاخص گیاهی و SPIطی دوره مورد مطالعه حاکی از آن بود که نوع فرم رویشی و گونه گیاهی نقش مهمی در تأثیرپذیری پوشش گیاهی از خشکسالی دارد. در بین تیپهای گیاهی مطالعه شده، در مناطق مرتعی با پوشش علفزار یکساله- فورب بالاترین میزان همبستگی میان تغییرات شاخص پوشش گیاهی و SPI وجود داشت، این مطلب مؤید اثر بیشتر کاهش بارندگی بر زوال و از بین رفتن پوشش گیاهی مرتعی نسبت به پوشش جنگلی است. نتایج این مطالعه نشان میدهد که دادههای NDVI مستخرج از سنجنده مودیس ابزار مؤثری در برآورد و پایش خشکسالی مؤثر بر پوشش گیاهی است. با مطالعه و شناخت پوشش گیاهی و استفاده از شاخص NDVI، برای بررسی تغییرات پوشش گیاهی میتوان تیپهای حساس و آسیبپذیر را در شرایط خشکسالی تشخیص داد. | ||
| کلیدواژهها | ||
| بارندگی؛ شاخصSPI؛ کریجینگ؛ شاخص نرمال شده تغییرات پوشش گیاهیNDVI؛ رگرسیون خطی | ||
| عنوان مقاله [English] | ||
| An investigation on impact of drought on rangeland and forest vegetation changes in Chaharmahal & Bakhtiari province using MODIS satellite dat | ||
| نویسندگان [English] | ||
| Leila Yaghmaei1؛ S. Soltani2؛ R. Jafari3؛ H. Bashari4؛ H. Jahanbazi5 | ||
| 1PhD student, Isfahan university of technology | ||
| چکیده [English] | ||
| The aim of this study was to investigate the relationships between vegetation changes and climate variables including rainfall and drought using MODIS satellite images during the years 2000-2014 in Chaharmahal and Bakhtiari Province. In order to evaluate the impact of rainfall and drought on vegetation changes in 32 synoptic, climatology and rain gauge stations in and around the province, SPI index was calculated in short time series (3, 6, 9 months) and long time series (12, 24 months). All the time scales were leading to early June in which the maximum growth of vegetation of the province is occurred. To this end, SPI drought maps and NDVI images were prepared at different time scales by kriging method and linear regression analysis was performed to define their relationships. Comparisons of NDVI and SPI over the study period showed that the vulnerability of vegetation to drought mostly depends on the life forms and plant species. In this study, depending on the type of vegetation, different correlation coefficients were observed between vegetation and SPI indices. Among different rangeland and forest vegetation types, higher correlations were found between NDVI and SPI in rangeland vegetation types compared to the forest ones and the highest correlations belonged to the annual grass and annual forb vegetation cover. This confirms the higher impact of reducing rainfall on the decline of rangeland cover compared to the forest vegetation. Overall, the findings of this study indicate that the MODIS NDVI can be used to study SPI in the assessment and monitoring of drought effects on vegetation cover. By studying and recognition of vegetation cover and applying NDVI index to assess changes in vegetation cover, vulnerable types of vegetation to drought could be identified. | ||
| کلیدواژهها [English] | ||
| Rangeland and forest vegetation, drought, MODIS, NDVI, Linear regression | ||
| مراجع | ||
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- Alijani, B., Mahmoodi, P., Saligheh, M., Rigi, A., 2011. Investigating variations of the annual minimum and maximum temperatures in Iran. journal of geographic research, 102 (3): 101-122 (In Persian). - Allen, C. D., Macalady, A. K., Chenchouni, H., Bachelet, D., McDowell, N., Vennetier, M., Kitzberger, T., Rigling, A., Breshears, D. D., Hogg, E. T., 2010. A global overview of drought and heat-induced tree mortality reveals emerging climate change risks for forests. Forest Ecology and Management, 259 (4): 660-684. - Assal, T. J., Anderson, P. J., Sibold, J., 2016. Spatial and temporal trends of drought effects in a heterogeneous semi-arid forest ecosystem. Forest Ecology and Management, 365: 137-151. - Baaghideh, M., Alijani, B., Ziaian, P., 2011. Investigating the Possibility of Use of NDVI Index in Drought Analysis in Isfahan Province, Geographical Studies of Aridlands, 4:1-16. - Baaghideh, M., 2007. Investigation and monitoring of drought in Isfahan province using multi-time images of NOAA / AVHRR, NDVI index and GIS, PhD thesis of climatology, Kharazmi university. - Baguskas, S. A., Peterson, S. H., Bookhagen, B., Still, C. J., 2014. Evaluating spatial patterns of drought-induced tree mortality in a coastal California pine forest. Forest Ecology and Management, 315: 43-53. - Bates, J., Svejcar, T., Miller, R., Angell, R., 2006. The effects of precipitation timing on sagebrush steppe vegetation. Journal of Arid Environments, 64 (4): 670-697. - Birtwistle, A. N., Laituri, M., Bledsoe, B., Friedman, J. M., 2016. Using NDVI to measure precipitation in semi-arid landscapes. Journal of Arid Environments, 131: 15-24. - Brown, M. E., de Beurs, K. M., 2008. Evaluation of multi-sensor semi-arid crop season parameters based on NDVI and rainfall. Remote Sensing of Environment, 112 (5): 2261-2271. - Chamaillé‐Jammes, S., Fritz, H., 2009. Precipitation–NDVI relationships in eastern and southern African savannas vary along a precipitation gradient. International Journal of Remote Sensing, 30(13): 3409-3422. - Collins, S. L., 2002. Altered rainfall patterns, gas exchange, and growth in grasses and forbs. International Journal of Plant Sciences, 163 (4): 549-557. - Dabrowska-Zielinska, K., Kogan, F., Ciolkosz, A., Gruszczynska, M., Kowalik, W., 2002. Modelling of crop growth conditions and crop yield in Poland using AVHRR-based indices. International Journal of Remote Sensing, 23 (6): 1109-1123. - Dorman, M., Svoray, T., Perevolotsky, A., Sarris, D., 2013. Forest performance during two consecutive drought periods: diverging long-term trends and short-term responses along a climatic gradient. Forest Ecology and Management, 310: 1-9. - Du Plessis, W., 1999. Linear regression relationships between NDVI, vegetation and rainfall in Etosha National Park, Namibia. Journal of Arid Environments, 42 (4): 235-260. - Edwards, D. C., 1997. Characteristics of 20th century drought in the United States at multiple time scales. DTIC Document. - Eskandari, N., Alizadeh, A., Mahdavi, F., 2008. Range management polices in Iran, Pooneh publication, 196p (In Persian). - Fathi, A., Beygi, H., Davoodian, A., Tabatabaei, H., 2014. comparison of spatial interpolation methods and selecting the appropriate method for mapping of nitrate and phosphate in the Shahrekord Aquifer. Scientific Journal of Irrigation and Water Engineering, 15: 51-63 (In Persian). - Fayaz, M., 2012. Project of ecological zones of the Iran, plant types in Chaharmahal and Bakhtiari province, Iran Forestry and Rangeland Research Institute,86p (In Persian). - Foster, D. R., Knight, D. H., Franklin, J. F., 1998. Landscape patterns and legacies resulting from large, infrequent forest disturbances. Ecosystems, 1 (6): 497-510. - Gu, Y., Hunt, E., Wardlow, B., Basara, J. B., Brown, J. F., Verdin, J. P., 2008. Evaluation of MODIS NDVI and NDWI for vegetation drought monitoring using Oklahoma Mesonet soil moisture data. -Geophysical Research Letters, 35 (22). - Hadian, F., Jafari, R., Bashari, H. Soltani, S., 2013.Monitoring the Effect of Rainfall on Vegetation Changes Using Remote Sensing Techniques in a 12-Year Period, case study:Lordegan and Semirom. Journal of Range and Watershed Management, 66 (4): 621-632 (In Persian). - Hadian, F., Hosseini.,S., Seyedhasani, M., 2014. .Monitoring Vegetation Changes Using Remote Sensing Techniques and rainfall data in northwestern of Iran. Journal of range and desert research, 21 (4): 756-768 (In Persian). - Hamzehpour, M., Kia-daliri,H., Bordbar, K., 2011. Preliminary study of manna oak ( Quercus brantii Lindl.) tree decline in Dashte-Barm of Kazeroon, Fars province. Iranian Journal of Forest and Poplar Research, 19 (2): 352-363 (In Persian). - Hayes, M .J., Svodoba, M. D., Wilhite, D. A., Vanyarkho, O. V., 1999. Monitoring the 1996 drought using the standardized precipitation index. Bulletin of the American Meteorological Society, 80 (3): 429. - Hejazi zadeh, A., Fatahi, A., Ghaemi, H., 2003. Drought monitoring using standardized precipitation index, Case study of Chaharmahal Bakhtiari province., Geography Science, 23-45 (In Persian). - Hogg, E., Brandt, J., Michaelian, M., 2008. Impacts of a regional drought on the productivity, dieback, and biomass of western Canadian aspen forests. Canadian Journal of Forest Research, 38 (6): 1373-1384. - Hogg, E. H., Saugier, B., Pontailler, J. Y., Black, T., Chen, W., Hurdle, P., Wu, A., 2000. Responses of trembling aspen and hazelnut to vapor pressure deficit in a boreal deciduous forest. Tree Physiology, 20 (11). - Isaaks, E., Srivastava, R., 1989. Applied geostatistics: Oxford University Press. New York, 561P. - Jägerbrand, A. K., Alatalo, J. M., Chrimes, D., Molau, U., 2009. Plant community responses to 5 years of simulated climate change in meadow and heath ecosystems at a subarctic-alpine site. Oecologia, 161 (3): 601-610. - Jain, S. K., Keshri, R., Goswami, A., Sarkar, A., 2010. Application of meteorological and vegetation indices for evaluation of drought impact: a case study for Rajasthan, India. Natural Hazards, 54 (3): 643-656. - Ji, L., Peters, A. J., 2003. Assessing vegetation response to drought in the northern Great Plains using vegetation and drought indices. Remote Sensing of Environment, 87 (1): 85-98. - Khalili, F., Gharibi, A., Shafie, Z., 2011, Socioeconomic Report of Chaharmahal & Bakhtiari Province, Management and Planning Organization of Chahar Mahal and Bakhtiari, Management and Planning Organization of the Iran (In Persian). - Khodagholi, M., 2008. Investigation and zoning of drought in Isfahan province using standard Precipitation index, Research project report, Department of Natural Resources and Watershed Management of Isfahan Province (In Persian). - Khoshakhlagh, F., An Attitude to Changes in Absolute Minimum Temperature in Iran. Journal of Geography and Environmental Planning, 42 (2): 199-216 (In Persian). - Liang, E., Shao, X., He, J., 2005. Relationships between tree growth and NDVI of grassland in the semi‐arid grassland of north China. International Journal of Remote Sensing,. 26 (13): 2901-2908. - Littell, J. S., McKenzie, D., Peterson, D. L., Westerling, A. L., 2009. Climate and wildfire area burned in western US ecoprovinces, 1916–2003. Ecological Applications, 19 (4): 1003-1021. - McKee, T. B., Doesken, N. J., Kleist, J., 1993. The relationship of drought frequency and duration to time scales. Proceedings of the 8th Conference on Applied Climatology. American Meteorological Society Boston, 179-183. - Mesdaghi, M., 2003. Range management in Iran, 4th press, Emam Reza publication,260p (In Persion). - Mirmoosavi, H., Karimi, H., 2013. Study of the effect of drought on vegetation using MODIS images, Case study Kordestan province. Geography and development, 31: 57-76 (In Persian). - Mueller, R. C., Scudder, C. M., Porter, M. E., Talbot Trotter, R., Gehring, C. A., Whitham, T. G., 2005. Differential tree mortality in response to severe drought: evidence for long‐term vegetation shifts. Journal of Ecology, 93 (6): 1085-1093. - Pack, S. M., 2009. A MODIS Imagery Toolkit for ArcGIS Explorer. - Peters, A. J., Walter-Shea, E. A., Ji, L., Vina, A., Hayes, M., Svoboda, M. D., 2002. Drought monitoring with NDVI-based standardized vegetation index. Photogrammetric Engineering and Remote Sensing, 68 (1): 71-75. - Piao, S., Fang, J., Zhou, L., Guo, Q., Henderson, M., Ji, W., Li, Y., Tao, S., 2003a. Interannual Variations of Monthly and Seasonal Normalized Difference Vegetation Index (NDVI) in China from 1982 to 1999. Journal of Geophysical Reserch, 108 (14): 1-13. - Pringle, M., Denham, R., Devadas, R., 2012. Identification of cropping activity in central and southern Queensland, Australia, with the aid of MODIS MOD13Q1 imagery. International Journal of Applied Earth Observation and Geoinformation, 19: 276-285. - Richard, Y., Poccard, I., 1998. A Statistical Study of NDVI Sensitivity to Seasonal and Interannual Rainfall Variations in Southern Africa. International Journal of Remote Sensing, 19 (15): 2907- 2920. - Schwinning, S., Sala, O. E., 2004. Hierarchy of responses to resource pulses in arid and semi-arid ecosystems. Oecologia, 141 (2): 211-220. - Shirani, B., Khodagholi, M., Montazeri, M., Investigation and analyzing the production of Artemisia rang lands base on meteorological drought index, case study: Isfahan Province, Watershed Engineering and Management, 8 (2): 210-220 (In Persian). - Shirgholami, H., Ghahraman, B., 2005. Study of Time Trend Changes in Annual Mean Temperature of Iran. Journal of Water and Soil Science, 9 (1): 9-24 (In Persian). - Tali Ghohroodi, M., 2005. Geographic Information Systems in the 3D GIS environment, Jahad University Press, 298p (In Persian). - Sousa, W. P., 1984. The role of disturbance in natural communities. Annual Review of Ecology and Systematics, 15 (1): 353-391. - Stephenson, N. L., 1990. Climatic control of vegetation distribution: the role of the water balance. The American Naturalist, 135 (5): 649-670. - Turner, M. G., Baker, W. L., Peterson, C. J., Peet, R. K., 1998. Factors influencing succession: lessons from large, infrequent natural disturbances. Ecosystems, 1 (6): 511-523. - Vicente-Serrano, S. M., 2007. Evaluating the impact of drought using remote sensing in a Mediterranean, semi-arid region. Natural Hazards, 40 (1): 173-208. - Wang, R., Gamon, J. A., Montgomery, R. A., Townsend, P. A., Zygielbaum, A. I., Bitan, K., Tilman, D., Cavender-Bares, J., 2016. Seasonal variation in the NDVI–species richness relationship in a prairie grassland experiment (Cedar Creek). Remote Sensing, 8 (2): 128. - Yaghmaei, L., Soltani, S., Khodagholi, M., Saboohi, R., 2009. effects of climatic factors on distribution of forest vegetation types in Chaharmahal and Bakhtiyari province using multivariate statistical methods. Journal of Iran Forest, 1 (3): 239-252 (In Persian). - Yekom Consulting Engineers., 1988. Comprehensive studies on the rehabilitation and development of agriculture and natural resources in the northern watershed, Karoon River, forest report, ministry of agricalture, Assistance of Planning, Tehran, 135p. - Yuhas, A. N., Scuderi, L. A., 2009. MODIS‐derived NDVI Characterisation of Drought‐Induced Evergreen Dieoff in Western North America. Geographical Research, 47 (1): 34-45. - Zeppel, M., Wilks, J., Lewis, J., 2014. Impacts of extreme precipitation and seasonal changes in precipitation on plants. Biogeosciences, 11 (11): 3083-8.
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