Earth Systems and Environment, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 10, 2025
Language: Английский
Remote Sensing, Journal Year: 2024, Volume and Issue: 16(16), P. 2960 - 2960
Published: Aug. 12, 2024
Accurately evaluating drought and its effects on the natural environment is difficult in regions with limited climate monitoring stations, particularly hyper-arid region of Sultanate Oman. Rising global temperatures increasing incidences insufficient precipitation have turned into a major disaster worldwide. In Oman, constitutes threat to food security. this study, indices (DIs), such as temperature condition index (TCI), vegetation (VCI), health (VHI), which integrate data streamflow, were applied using moderate resolution imaging spectroradiometer (MODIS) Google Earth Engine (GEE) platform monitor agricultural assess risks hazard (DHI) during period 2001–2023. This approach allowed us explore spatial temporal complexities patterns Najd region. As result, detailed analysis TCI values exhibited variations over study period, notable minimum observed specific years (2001, 2005, 2009, 2010, 2014, 2015, 2016, 2017, 2019, 2020, 2021), there was discernible trend from 2014 2023 compared earlier years. According VCI index, several years, including 2001, 2003, 2006, 2008, 2013, 2018, 2021, 2022, 2023, characterized by mild conditions. Except for 2005 2007, all studied classified based VHI index. The Pearson correlation coefficient (PCA) utilized observe between DIs, high positive (0.829, p < 0.01) found. Based DHI analysis, northern area faced most severe hazards, severity gradually diminishing towards south east, approximately 44% total fell under risk, while remaining 56% facing very risk. emphasizes importance continued monitoring, proactive measures, effective adaptation strategies address heightened risk impacts local ecosystems communities.
Language: Английский
Citations
5
Remote Sensing, Journal Year: 2023, Volume and Issue: 15(6), P. 1689 - 1689
Published: March 21, 2023
Drought poses a serious threat to agricultural production and food security in the context of global climate change. Few studies have explored response mechanism lag time drought meteorological from perspective cultivated land types. This paper analyzes spatiotemporal evolution patterns hysteresis relationship droughts middle lower reaches Yangtze River China. Here, Moderate Resolution Imaging Spectroradiometer (MODIS) vegetation index products surface temperature were selected calculate Temperature Vegetation Dryness Index (TVDI) 2010 2015. Furthermore, we obtained Standardized Precipitation Evapotranspiration (SPEI) Palmer Severity (PDSI) for same period. Based on these indices, analyzed correlation between rainfed irrigated arable land. The results showed that, (1) compared with SPEI, high spatial resolution PDSI data deemed more suitable subsequent accurate scientific analysis droughts. (2) When occurs, is first experience drought, then alleviates when most severe land, indicating that sensitive events exposed degree risk. However, actually susceptible due intervention irrigation measures. (3) According cross-wavelet transform analysis, significantly behind by about 33 days during development process events. (4) distribution coefficient TVDI shows area negative correlations croplands positive account 77.55% 68.04% cropland areas, respectively. study clarifies distinguishes details meteorological-to-agricultural noting an can provide useful guidance monitoring management project planning River.
Language: Английский
Citations
11
Springer eBooks, Journal Year: 2024, Volume and Issue: unknown, P. 225 - 280
Published: Jan. 1, 2024
Language: Английский
Citations
4
Environmental Monitoring and Assessment, Journal Year: 2024, Volume and Issue: 196(10)
Published: Sept. 3, 2024
Language: Английский
Citations
4
Earth Systems and Environment, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 10, 2025
Language: Английский
Citations
0