Swathandran Sruthi, Aslam M A Mohammed
Department of Geology, CUK-Kadaganchi, Gulbarga, Karnataka, 585311, India.
Environ Monit Assess. 2016 Jan;188(1):63. doi: 10.1007/s10661-015-5065-6. Epub 2015 Dec 30.
Drought is an extreme climatic situation where there is a water shortage arising due to sub-normal rainfall, erratic distribution of precipitation, increased water supply demand, etc. India faced several years of drought in last six decades. As Indian agriculture is largely dependent on the monsoon, a slight change affects production as well as crop yield drastically. Statistical analysis is important for mapping the drought prone areas. Raichur district of the northern interior state of Karnataka is a drought-prone region where the economy is mainly based on agriculture. So, the uneven distribution of rainfall as well as the delay in the arrival of the southwest monsoon adversely affects the growth stage of crops which result in a decline in crop production. The effect of drought on the agriculture for the past decade has been analyzed using crop productivity data. When the production rate of Raichur district was studied for the years 1998 to 2009, it was seen that major crops like rice and jowar faced a decline in its production during the years 2002 and 2003, whereas bajra, maize, etc. mostly decreased in the year 2004.
干旱是一种极端气候状况，由于降雨量低于正常水平、降水分布不均、供水需求增加等原因导致缺水。在过去六十年里，印度经历了数年干旱。由于印度农业很大程度上依赖季风，稍有变化就会对产量和作物收成产生巨大影响。统计分析对于绘制干旱易发地区地图很重要。卡纳塔克邦北部内陆地区的赖丘尔县是一个干旱易发地区，其经济主要以农业为基础。因此，降雨分布不均以及西南季风到来延迟对作物生长阶段产生不利影响，导致作物产量下降。利用作物生产力数据对过去十年干旱对农业的影响进行了分析。研究赖丘尔县1998年至2009年的生产率时发现，水稻和高粱等主要作物在2002年和2003年产量下降，而珍珠粟、玉米等在2004年大多减产。
