Analysis of relationship between forest decline and precipitation changes in Ilam Province | ||
| تحقیقات جنگل و صنوبر ایران | ||
| Article 11, Volume 23, Issue 3, September 2015, Pages 502-515 PDF (2.27 M) | ||
| Document Type: Research article | ||
| DOI: 10.22092/ijfpr.2015.105655 | ||
| Authors | ||
| Ghasem Azizi* 1; Morteza Miri2; Hossein Mohammadi3; Mehdi Pourhashemi4 | ||
| 1Associate Prof., Faculty of Geography, University of Tehran, Tehran, Iran | ||
| 2Ph.D. Student, Faculty of Geography, University of Tehran, Tehran, Iran | ||
| 3Prof., Faculty of Geography, University of Tehran, Tehran, Iran | ||
| 4Associate Prof., Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran | ||
| Abstract | ||
| Oak decline phenomenon recently led to considerable dieback within Zagros forests. This study was designed to assess the temporal trends of changes in forest cover of the Ilam province in association with precipitation variations during a 14-year period (2000-2013). To this aim remote sensing and GIS techniques were used. The remote sensing data included 16-day NDVI products of MODIS data as well as Google-Earth archive and the related control points. Additionally climatic data from synoptic stations, GPCC long-term data and TRMM rainfall data were applied. The optimal number of land cover and forest classes was defined by means of an unsupervised ISODATA method and mean and minimum divergence separation indexes. The result indicated 35 and 30 land cover classes to be appropriate for annual and long-term assessments, respectively. Spectral graph revealed a growth period from mid-February to early-May within Ilam forests. NDVI trend revealed the first significant reduction in forest cover in 2005 and the second one in 2008, which was followed by a descending trend in forest cover for the last 3-years of the investigated 14-year period. The data from ground stations and rainfall grid point indicated negative annual and monthly rainfall trends. The trend was significant within forests in 90% and 95% confidence levels. The peak of the declining precipitation trend was observed in the beginning of growth season in March. Correlating the NDVI with and precipitation trend revealed significant reduction of annual precipitation and drought stress during the growth season are particularly responsible for considerable amounts of forest dieback and chlorophyll decline within forests of Ilam. | ||
| Keywords | ||
| Separability; oak decline; GPCC; satellite TRAA; Satellite TRMM | ||
| References | ||
|
- Anonymous, 2011. National project on prevention and control of oak decline in Zagros forests. Published by Forests, Range and Watershed Management Organization, Tehran, 52p (In Persian). - Arend, M., Brem, A., Kuster, T.M. and Gunthardt, M.S., 2012. Seasonal photosynthetic responses of European oaks to drought and elevated daytime temperature. Plant Biology, 15(1): 169-176. - Bravo, F., LeMay, V., Jandl, R. and Gadow, K., 2008. Managing Forest Ecosystems: The Challenge of Climate Change. Springer, 333p. - Bugmann, H., Brang, P., Elkin, C., Henne, P., Jakoby, O., Lévesque, M., Lischke, H., Psomas, A., Rigling, A., Wermelinger, B., Zimmermann, N.E., 2014. Climate change impacts on tree species, forest properties, and ecosystem services: 79-88. In: Raible, C.C.; Strassmann, K.M. (Eds.) CH2014-Impacts, Toward Quantitative Scenarios of Climate Change Impacts in Switzerland, Bern: OCCR, FOEN, MeteoSwiss, C2SM, Agroscope, and ProClim. - Dewan, A.M. and Yamaguchi, Y., 2009. Using remote sensing and GIS to detect and monitor land use and land cover change in Dhaka Metropolitan of Bangladesh. Environmental Monitoring and Assessment, 150: 237-249.
- Hamzehpour, M., Kia-daliri, H. and Bordbar, K., 2012. 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). - Hanson, P.J. and Weltzin, J.F., 2000. Drought disturbance from climate change: response of United States forests. The Science of the Total Environment, 262: 205-22. - Hosseini, A., Hosseini, S.M., Rahmani, A. and Azadfar, D., 2013. Comparison between two oak stands (healthy and affected by oak decline) in respect to characteristics of competitive environments at Ilam province. Iranian Journal of Forest and Poplar Research, 21(4): 606-616 (In Persian). - Jafari, M.R., Hosseinzadeh, J., Pourhashemi, M., Norouzi, A.A., Mirakhorlou, Kh. and Mohammadpour, M., 2014. Identification and zoning of forest stands affected by oak decline using GIS & RS in Ilam Province. Final Report of Research Project, Published by Research Institute of Forests and Rangelands, 48p (In Persian). - Krahwinkler, P. and Rossmann, J., 2010. Tree species classification based on the analysis of hyperspectral remote sensing data. 30th EARSeL Symposium: Remote Sensing for Science, Education and Culture, Paris, 207p. - Mapfumo, B., Murwira, A., Masocha, M. and Andriani, R., 2014. Monitoring and evaluating the impacts of subtle deforestation on tree diversity in savanna woodlands. International Journal of Research in Agriculture and Food Sciences, 1(5): 2311-2476. - Mas, J.F., Puig, H., Palacio, J.L. and Sosa-Lopel, A., 2004. Modeling deforestation using GIS and Artificial Neural Networks. Environmental Modeling & Software, 19: 461-471. - Nguyen,T.T.H., 2013. Earth observation for rice crop monitoring and yield estimation: Application of satellite data and physically based models to the Mekong Delta. Ph.D. thesis, Faculty of Geoinformation Science and Earth Observation, University of Twente, Netherlands, 49p. - Papoli Yazdi, M. and Fathnia, A., 2007. Relationships between humans and oak. Journal of Geography Education, 20(1): 7-17 (In Persian). - Parma, R. and Shataee Jouybari, Sh., 2010. Impact of physiographic and human factors on crown cover and diversity of woody species in the Zagros forests (Case study: Ghalajeh forests, Kermanshah province). Iranian Journal of Forest and Poplar Research, 4(42): 539-555 (In Persian). - Pietrzyk, P.J. and Lindenbergh, R.C., 2014. Detection of harvested trees in forests from repeated high density airborne laser scanning, ISPRS Annals of the Photogrammetry. Remote Sensing and Spatial Information Sciences, 2(5): 275-280. - Ryan, M.G., Vose, J.M. and Weed, A., 2012. Effects of climatic variability and change on forest ecosystems: A comprehensive science synthesis for the U.S. forest sector. Chapter 2: Effects of Climatic Variability and Change. General Technical Report PNW-GTR-870, Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 5p. - Sakthivel, R., Manivel, M., Jawahar Raj, N., Pugalanthi, V., Ravichandran, N. and Vijay, D.A., 2010. Remote sensing and GIS based forest cover change detection study in Kalrayan hills, Tamil Nadu. Journal of Environmental Biology, 3(5): 737-747. - Shen, Z., Gang, F., Chengqun, Y., Sun, W. and Zhang, X., 2014. Relationship between the growing season maximum enhanced vegetation index and climatic factors on the Tibetan Plateau. Remote Sensing, 6: 6765-6789. - Sun, J., Cheng, G., Li, W., Sha, Y. and Yang, Y., 2013. On the variation of NDVI with the principal climatic elements in the Tibetan Plateau. Remote Sensing, 5: 1894-191. - Tou, J.T. and Gonzalez, R.C., 1974. Pattern Recognition Principles Massachusetts: Reading, Advance Book Program. Addision-Wedley Publishing Company. - Weber, P., Bugmann, H., Fonti, P. and Rigling, A., 2008. Using a retrospective dynamic com-petition index to reconstruct forest succession. Forest Ecology and Management, 254: 96-106. - Hussin, Y.A. and Bijker, W., 2000. Inventory of remote sensing applications in forestry for sustainable management. ISPRS 2000 Congress: Geoinformation for All, Amsterdam, the Netherlands, 16-23 July, pp. 575-587. - Zangiabadi, S., Ahmadimoghadam, A. and Naseri, F., 2011. Forest classification using IRS satellite data. World Applied Sciences Journal, 15: 1409-1413. - Zebardast, L., Jafari, H.R., Badehian, Z. and Ashegh Moalla, M., 2011. Assessment of the trend of changes in land cover of Arasbaran protected area using satellite images of 2002, 2006 and 2008. Environmental Researches, 1: 23-33 (In Persian). - Zhao, X., Xu, P., Zhou, T., Li, Q. and Wu, D., 2013. Distribution and variation of forests in China from 2001 to 2011: A study based on remotely sensed data. Forests, 4: 632-649. | ||
|
Statistics Article View: 2,202 PDF Download: 1,445 |
||
Journal management system. designed by sinaweb