书籍

描述

The world is facing multiple challenges in this 21st century. The impact of climate change on crop water requirements, water availability, irrigation demand, irrigation potential and irrigation performance have been assessed using climate model scenarios, indicating that crop water requirements will increase, whilst water availability will decrease. This will usher in challenges to the farming communities. These challenges include poverty, food security, scarcity of water, and most importantly, new and complex challenges emerging due to global warming and climate change. The most crucial climate issue for small-holder farmers in arid and semi-arid regions of Zimbabwe is rainfall.