DLDD and the Rio Convention’s long term objectives
DLDD affected and prone areas are expected to increase in the future, causing severe impacts on their economies mainly those of Least Developed Countries, Small Islands Developing States and other developing countries. Impacts however are going to also reach developed countries. Lower yields of crops or damage to crops, water stress, food insecurity, malnutrition, poor health and increased risk of population migration are in the forecast to be prevalent at the global level.
The 4th IPCC report remarks that in a short period of time there will be identifiable regional impacts of climate change. For example, under a range of climate scenarios, projections for 2080 reflect an increase of 5 to 8% of arid and semi-arid land in Africa. In Asia and Latin America increases in temperature and associated decreases in soil and water quality will lead to gradual replacement of tropical forest by savannas. Semi-arid vegetation will tend to be replaced by arid-land vegetation, thus affecting human populations and the overall biodiversity. Among many other impacts in Island ecosystems, climate change is expected to reduce water resources in many small islands, in the Caribbean and the Pacific, to the point where they might become insufficient to meet demand during low-rainfall periods. Also, with higher temperatures and without sustainable management of lands, increased invasion by non-native species is expected to occur, particularly on mid- and high-latitude islands.