Assessment of Water Footprint of Maize in Urban Districts of Jharkhand in India
摘要
In present days depletion rate of freshwater availability is alarmingly high globally. The condition is much worse in urban areas than the rural areas. The main drawback for water scarcity in urban areas is over population and rapid urbanization. Water is majorly consumed to produce agricultural products and it increases along with food demand which has direct relationship with population. To manage water efficiently, proper understanding of water consumption is much needed and water footprint (WF) will be a helpful indicator for this. This study was conducted by assessing WF of maize using Cropwat 8.0 model in four urban districts—Bokaro, Dhanbad, East Singhbhum and Ranchi of Jharkhand over the period of 2016–2021. The sharing of consumptive WF of maize (kharif) in three districts Dhanbad, Bokaro and Ranchi under Central and Northeastern plateau zone are 22%, 24% and 20% whereas the East Singhbhum under Southeastern plateau zone shares 33% of total water footprint despite of having highest forest cover with highest urbanization. These results suggest regional level study. This study recommends not to cultivate crops having high blue WF in any region considering seasons like kharif and rabi to manage water sources, making water policy by suggesting and sometimes mandating the people especially in water-scarce regions and over-populated areas to consume more food from water-saving crops and less from water-consuming crops according to health condition and invent high-yielded variety of water retentive crops to reduce water footprint in a region and to achieve sustainable food security.