Precipitation indicators of climate change in decline monitoring sites in Chaharmahal and Bakhtiari province

Document Type : Research Paper

Authors

1 Assist., Prof., , Desert Research Division, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, I.R. Iran

2 Assoc., Prof., Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, I.R. Iran

3 Assist., Prof., Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, I.R. Iran

Abstract

One of the most important factors affecting the Drought and decay of Zagros forests is the occurrence of climate change. Occurrence of torrential rains and severe droughts puts forest ecosystems under stress and provides a breeding ground for pests and diseases, resulting in degradation and drought. The aim of this study is to investigate the precipitation indices of the global standard for climate change detection in decay monitoring sites in Chaharmahal and Bakhtiari province. For this purpose, daily precipitation data from the nearest synoptic stations to the decay monitoring sites were used for the statistical period of 1991-2019. The data were analyzed for quality and homogeneity and were ready to enter the model. ClimPACT software was used to run the model in R environment. Out of 61 output indices, eight precipitation indices detecting climate change, including: PRCPTOT, CDD, CWD, R10mm, R10mm, RX1day, RX2day, RX5day were extracted. The trend of slope of change, trend slope error and significance of changes were calculated and evaluated on the indicators. The results showed that the annual rainfall fluctuated a lot and between 2006 and 2019, all decay monitoring sites experienced a low rainfall period. Because the study area is located in the second highest rainfall region of the country and benefits from both Mediterranean and Sudanese rainfall systems, the frequency of heavy and super heavy rainfall is high and based on the maximum rainfall indicators of one, two, and five days, there is a potential for heavy flooding in the range of decayed sites. Given the trend of climate change in the current situation and its continuation in the future, recognizing the potential of rainfall and its characteristics can help forest ecosystem managers in the implementation of threat management programs caused by excessive rainfall and flooding and turning it into an opportunity to adapt to climate change in order to preserve and rehabilitate forest trees.

Keywords


[1]. Abedi, R., and Kazemi Rad, L. (2021). Investigation of climate change parameters of forest ecosystem compared to urban area.  Ecology of Iranian Forest, 9(17): 97-105.
[2]. Pourhashemi, M., and Sadeghi, S. M. M. (2020). Review on ecological causes of oak decline phenomenon in forests of Iran. Ecology of Iranian Forest, 8 (16): 148-164.
[3]. Roibu, C. C., Sfecla, V., Mursa, A., Ionita, M., Nagavciuc, V., Chiriloaei, F., and Popa, I. (2020). The climatic response of tree ring width components of ash (Fraxinus excelsior L.) and common oak (Quercus robur L.) from Eastern Europe. Forests, 11(5), 600.
[4]. Pourtahmasi, K., Parsapajouh, D., Marvi Mohajer, M., and Ali-Ahmad-Korouri, S. (2008). Evaluation of Juniper trees (Juniperus polycarpos C. Koch) radial growth in three sites of Iran by using dendrochronology. Iranian Journal of Forest and Poplar Research, 16(2), 342-3.
[5]. Heshmati, M., Gheitury, M., and Arabkhedri, M. (2021). The effect of rainwater harvesting approach to combat drought in the Zagros forests, Iran. Journal of Rainwater Catchment Systems. 9 (1):1-8.
[6]. Sochová, I., Kolar, T., and Rybnícek, M. (2021). A review of oak dendrochronology in eastern europe. Tree-Ring Research, 77(1), 10-19.
[7]. Radaković, N., and Stajić, B. (2021). Climate signals in early wood, latewood and tree-ring width chronologies of sessile oak (Quercus petraea (Matt.) Liebl.) from Majdanpek, north–eastern Serbia. Drvna Industrija: Znanstveni Casopis Za Pitanja Drvne Tehnologije, 72(1), 79-87.
[8]. Colangelo, M., Camarero, J. J., Borghetti, M., Gentilesca, T., Oliva, J., Redondo, M. A., and Ripullone, F. (2018). Drought and Phytophthora are associated with the decline of oak species in southern Italy. Frontiers in plant science, 9, 1595.‌
[9]. Naseri, M., Shataee Jooibari, S., Mohammadi, J., and Ahmadi, S. (2020). Investigation on the amount of mortality of iranian oak trees (quercus brantii lindi) using satellite imagery (Case study: Dashte Barm forests of Fars Province). Ecology of Iranian Forest, 8(16), 72-80.‌
[10]. Shiravand, H., Khaledi, S., Behzadi, S., and Sanjabi, H. A. (2020). Monitoring and assessing the changes in the coverage and decline of oak forests in Lorestan province using satellite images and BFAST model. Researches in Geographical Sciences. 20 (57):265-280.
[11]. Rostam Zadeh, H., Darabi, S., and Shahabi, H. (2017). Change detection of Oak forests using object-based classification of multitemporal Landsat imageries (Case study: forests of the northern province of Ilam). Journal of RS and GIS for Natural Resources, 8(2), 92-110.
[12]. Jafari, M., and Hosseini, A. (2019). Identification and zoning of Dieback Oak forests in Ilam province using RS and GIS. Geographic Space, 67(19), 43-60.
[13]. Shehabi, H., and Akbari, E. (2020). Investigation and prediction on forests covers changes using fuzzy object-based satellite image classification and Ca-Markov (case study: City of Romeshkan). Journal of Environmental Research and Technology, 6(6), 103.
[14]. Safari, A., and Sohrabi, H. (2019). Effect of climate change and local management on aboveground carbon dynamics (1987–2015) in Zagros oak forests using Landsat time-series imagery. Applied Geography, 110, 102048.‌
[15]. Maroofzadeh, E., and Attarod, P. (2021). Are changes in forest cover in the North Zagros vegetation area in line with the trend of climatic parameters? Iranian Forest Journal, 12 (4), 449-466.
[16]. Azizi, G., Miri, M., Mohammadi, H., and Pourhashemi, M. (2015). Analysis of relationship between forest decline and precipitation changes in Ilam Province. Journal of Forest and Poplar Research, 23(3): 502-515.
[17]. Nassaji-Zavareh, M., Abdollahzadeh, A., and Elahi, M. (2017). Determination of the effect of some climate factors on the forest decline using PCAGIS method (Case study: Kermanshah city). Journal of Forest and Rangeland, 112: 32-38.
[18]. Asgari, S., Razi, T., Hosseini, A., and Najafifar, A. (2021). Temporal-Spatial Analysis of drought and Oak Trees Dieback of Zagros Forests in Ilam Province. Ecology of Iranian Forest, (17):86-96.
[19]. Prein, A. F., Rasmussen, R. M., Ikeda, K., Liu, C., Clark, M. P., and Holland, G. J. (2017). The future intensification of hourly precipitation extremes. Nature Climate Change, 7(1), 48-52.
[20]. Lisa Alexander, C. (2015). WMO CCl Expert Team on Sector-specific Climate Indices (ET SCI) Workshop, Nadi, Fiji 7th – 11th.