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Spatial and temporal variability of Standardized Precipitation Index over Indochina Peninsula

2016/04/13 by T. M. Vu, Tue Vu, A. Mishra +1 · 18 citations
Agricultural and Biological Sciences · Environmental Science · #Archaeology #Arid #Aridity index #Biology #Cartography #Climate change impacts on agriculture #Climate variability and models #Climatology #Dry season #Ecology #Environmental science #Geography #Geology #Hydrology and Drought Analysis #Meteorology #Peninsula #Physical geography #Population #Precipitation #Wet season

paper · pdf · doi:10.18172/cig.2928

published in Cuadernos de Investigación Geográfica 42(1), 221-232 (University of La Rioja)

openalex publication_date 2016/04/13 · crossref created 2016/04/13 · crossref issued 2016/06/27 · crossref published 2016/06/27 · crossref published-online 2016/06/27 · crossref deposited 2024/01/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/03 · crossref indexed 2026/08/03

Abstract

Indochina Peninsula has abundant water resources; however, most of the rain falls during the wet season. An arid condition is quite pronounced throughout the dry season. The majority of population depends on the agriculture as the main source of livelihood income. It is, therefore, important to study the drought and wetness over the region because crops are vulnerable to extreme climatic conditions. We used gridded precipitation APHRODITE and Standardized Precipitation Index (SPI) to evaluate the spatial and temporal variability of drought and wetness over Indochina peninsula. Nonparametric Modified Mann-Kendall (MMK) trend test was applied to determine the SPI trends over this region. There is a decrease in precipitation over a large part of Indochina during winter (dry season) and an increasing pattern during summer (rainy season). The increasing trend of SPI indicates an increase in wet condition over most parts of Indochina peninsula except for Red River Delta in Vietnam, central parts of Vietnam/Laos and western parts of Cambodia.

Citations