Deliniasi Wilayah Pioritas Penangan Rawan Kekeringan Di Lahan Pertanian (Studi Kasus: Sulawesi Selatan)

Abstract

Drought in the agricultural land might be happened because of the late wet season, it’s cause inappropriate cropping pattern. Delineation of vulnerability drought areas must be done to anticipate crop failure areas. Drought vulnerability areas analize by three different aspects: climatological, hydrological and agronomical. Each aspects has role in the water availability for agriculture land. Approachment of climatological aspect, drought vulnerability areas showed by the sensitivity level of rainfall towards sea surface temperature (SST) anomalies in the Nino-3.4 region. The rainfall is divided in three period: wet season (MH) at November-February, first dry season (MK-1) at March-June and second dry season (MK-2) at July-October. The correlation between rainfall anpmalies and SST anomalies specify three different areas: high sensitive areas, low sensitive areas and non-significant areas. Significant areas is the regions where rainfall has correlation toward sea surface temperature anomaly where the regression produce P-value ≤ 0.05. Approachment of hydrological aspect, drought vulnerability areas determined by the density of stream pattern. In agronomy aspect, drought areas is determined from the type of agricultural land use. The integration of these three aspects result distribution of drought level areas in agriculture field, specifically rice-field. Results of the climatological aspect analysis shows that the drought areas more often in the west and south Sulawesi Selatan. While on the agronomy aspect, drought areas are dominated by rainfed lands and moor lands that spreads all over province.