Abstract
Drylands include hyper-arid regions with aridity index (AI) of <0.05, arid regions with AI of 0.05-0.20, semi-arid regions with AI of 0.20-0.50, and dry sub-humid regions with AI of 0.5-0.65. However, drought and water scarcity have affected and will adversely affect food production in dryland farming. Among biomes which are vulnerable to global warming, arid regions are most sensitive to anthropogenic climate change. Chen et al. also reported that the northwest arid regions of China have experienced a sharp increase in both temperature and precipitation since the 1960s. Climate change in semi-arid regions may also aggravate the related extreme events including drought and heat wave. Soil degradation, caused by expansion of global drylands, may also aggravate intensity and severity of drought which affect crop growth and yield. Resource-poor and marginalized small land holder farmers are most vulnerable to water scarcity in arid regions.
Original language | English |
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Title of host publication | Soil and Drought |
Subtitle of host publication | Basic Processes |
Publisher | CRC Press |
Pages | 1-10 |
Number of pages | 10 |
ISBN (Electronic) | 9781000960044 |
ISBN (Print) | 9781032286747 |
DOIs | |
Publication status | Published - 1 Jan 2024 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2024 selection and editorial matter, Rattan Lal; individual chapters, the contributors.