Monitoring mortality in a semiarid forest under the influence of prolonged drought in Zagros region
| Autor: | Yahya Parvizi, Mohammad Hossein Ahmadi, A. Noroozi, M. Gheitury, Mosayeb Heshmati |
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| Rok vydání: | 2020 |
| Předmět: |
Drought stress
Environmental Engineering Climate change Tree density 010501 environmental sciences Biology 01 natural sciences Agronomy Air temperature Frost Environmental Chemistry Dead tree PEST analysis Precipitation General Agricultural and Biological Sciences 0105 earth and related environmental sciences |
| Zdroj: | International Journal of Environmental Science and Technology. 17:4589-4600 |
| ISSN: | 1735-2630 1735-1472 |
| DOI: | 10.1007/s13762-020-02638-8 |
| Popis: | Climate change and exacerbation of drought stress during recent decade cause forest mortality phenomenon and threatening existence of forests worldwide. This study was conducted to assess the forest decline trend and associated factors through remote sensing technique and field measurements during 6 years (2012–2017) in Zagros forest in the Kalehzard, Kermanshah, Iran. Precise coordinates of dead trees were recorded annually, and points were checked with satellite images. Results indicated that reductions in winter precipitation by about 37 mm and long-term frost days by about 10 days, and adversely increased air temperature by 0.14 °C corresponded with 20% reduction in tree density. Dead tree rate over study period on northern and southern slopes was 18.8% and 31.1%, respectively, with a significant higher rate being detected in southern slope (P |
| Databáze: | OpenAIRE |
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