Monitoring Water Productivity in Crop Production Areas from Food Security Perspectives

Dear Colleagues,

Feeding a growing global population while minimizing the subsequent environmental impact are twin challenges faced by the international communities on food production and security. While agriculture is the largest freshwater consuming sector on the planet, climate change has created further uncertainties in water availability by changing climate patterns or reducing glacier size, putting food security at stake to a greater extent than ever before. Although effort for timely monitoring food production has been made by international communities active on food security, for example, using earth observation technologies, the environmental impact of water use needs to be further addressed. There are tremendous differences in the quantum of water used to produce a unit of grains, also called water productivity (WP), between farm fields in various part of the world, because of various cropping conditions and different water and farming management practices (1). It is, therefore, very opportune and important not only to measure this indicator, but also to dissect potential drivers of this parameter in the context of food security, by identifying areas where the variability occurs, and to subsequently propose the strategies of improvement.

Dr. Qinghai Dong
Guest Editor

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• remote sensing
• food production and security
• climate change
• water productivity
• crop yield
• agricultural landscape