Impact Variability of Rainfall Intensity to Horticulture Productivity at West Pasaman Regency, Province of West Sumatera, Indonesia

Abstract

The changing of rainfall pattern and rising up rainfall intensity as phenomenon climate extreme, it has giving impact to dryness and floods, where that will give high potential to pressing agricultural productivity or make it be failure. The horticulture is the one of excellent sub-sector product in the region. The aim of the research is to analyst the climate change and connecting with distribution of horticulture commodity at West Pasaman Regency. Method of the research used the climatic data (data of rainfall intensity) from BMKG office, observation including re-analyst data of horticulture productivity since the years (2011 to 2015). The tools used software RClimDex, is Expert Team for Climate Change Detection and Indices (ETCCDMI) to detecting and monitoring climate change, as the focus to climate extreme,  During period of years 2000 to 2015, the rainfall variation between coastal area and terrain it so difference, if we compare with all has happened in the terrain area of West Pasaman the rainfall in the coastal has small variation every years. The global phenomenon ENSO (El Nino and La Nina) isn’t significant influence the moonly record of rainfall variability at West Pasaman Regency, in the costal or hinterland. The sub-district has highest as productivity horticulture at the coastal area is Sungai Beremas, the middle grade productivity is Sungai Aua, and the lowest is Sasak.

Keywords: Rainfall Variability, Productivity, Horticulture