Areas characterized by lack of water, which constrain two major, linked ecosystem services: primary production and nutrient cycling. Four dryland sub-types are widely recognized: dry sub- humid, semi-arid, arid and hyper-arid, showing an increasing level of aridity or moisture deficit.
References
- UN Environment (2019). Global Environment Outlook – GEO-6 : Healthy Planet, Healthy People. Nairobi. DOI 10.1017/9781108627146.
GEO-1-6
Areas characterized by lack of water, which constrain two major, linked ecosystem services: primary production and nutrient cycling. Four dryland sub-types are widely recognized: dry sub- humid, semi-arid, arid and hyper-arid, showing an increasing level of aridity or moisture deficit.