The International Treaty on Plant Genetic Resources for Food and Agriculture directly addresses the conservation and sustainable use of genetic diversity of plants used for food and agriculture. The UN Convention to Combat Desertification (UNCCD) aims to protect terrestrial ecosystems from land degradation and desertification, which inherently involves conserving biological diversity in affected areas. The World Heritage Convention focuses on identifying, protecting, and preserving cultural and natural heritage sites of outstanding universal value, many of which are critical habitats for biodiversity.