Study of Meteorological Drougth Under Climate Change in Ain Defla Region (Algeria)

Ain Defla地區（阿爾及利亞）氣候變化下的氣象乾旱研究

10.6937/TWC.202212_70(4).0002

ATTOU ALAA EDDINE；AZOUZI BLEL；BOUACHA MOHAMED ISLEM

Kriging ； meteorological Drought ； SPI ； Ain-Defla ； Algeria ； 克里金法 ； 氣象乾旱 ； SPI ； Ain-Defla ； 阿爾及利亞

台灣水利

70卷4期（2022 / 12 / 01）

9 - 21

英文;繁體中文

Drought is a consequence of climate change in many parts of the world. Furthermore, it became more complicated in the areas of rain-fed agriculture, so this study came to assess the meteorological drought temporally and spatially and to count the wet and dry years that passed over the Ain Defla region in northwestern Algeria. as it is an agricultural region most of its production depends on rain. It was negatively affected by the drought that lasted for many years. Thirteen stations within the study area were selected to obtain precipitation data to calculate the Standardized Precipitation Index (SPI) on an annual scale for 38 years from 1981 to 2019. Using Geographic Information Systems (GIS) and following the Kriging approach, digital maps have been created to determine drought distribution. The results showed that the region was exposed to droughts of varying severity and impact towards the east over the years (81-83-89-93-94-00), interspersed with wet periods that prevailed during the years (84-86-96-11-13-18). Two types of arid regions were counted within the region, the first in the west of Ain Defla, less arid than the second in the east. So in the future, agriculture in the region should prioritize crops less sensitive to drought.

乾旱是世界許多地區氣候變化的結果。此外，在雨養農業地區，情況變得更加複雜，因此本研究從時間和空間上評估了氣象乾旱，並計算了阿爾及利亞西北部Ain Defla地區的乾濕年份。因為它是一個農業區，所以它的大部分生產都依賴於雨水。它受到持續多年的乾旱的負面影響。選擇研究區的13個站點獲取降水數据，計算1981年至2019年38年的年尺度標準化降水指數（SPI）。利用地理信息系統（GIS）和克里金法，數字地圖已經被創建以確定乾旱分布。結果表明，該地區多年一直遭受不同程度的乾旱和對東部的影響（81-83-89-93-94-00），期間穿插著多年盛行的雨季（84-86-96）-11-13-18）。該區域內有兩種類型的乾旱地區，第一種在Ain Defla的西部，比東部的第二種更乾旱。因此，未來該地區的農業應優先種植對乾旱不太敏感的作物。

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