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Drylands are zones where precipitation is balanced by evaporation from surfaces and by transpiration by plants ( evapotranspiration ). [1] . The United Nations Environment Program defines drylands as tropical and temperate areas with an aridity index of less than 0.65. [2] . One can classify drylands into four sub-types: Dry sub-humid lands.
Drylands are characterized by a scarcity of water, which affects both natural and managed ecosystems and constrains the production of livestock as well as crops, wood, forage and other plants and affects the delivery of environmental services.
The Dry Land (also known as American Tragic) is a 2010 American drama film written and directed by Ryan Piers Williams. The film stars Ryan O’Nan, America Ferrara, Wilmer Valderrama, Jason Ritter, and Melissa Leo. It premiered at the 2010 Sundance Film Festival and opened in limited release on July 30, 2010.
31. Okt. 2021 · Drylands are found in tropical and temperate latitudes and account for 41.3% of the global terrestrial area. Drylands can be classified into four types - dry sub-humid, semi-arid, arid and hyper-arid lands - and encompass a variety of ecosystems. Issues brief. Drylands and land degradation.
Drylands are particularly affected by climate change through changing rainfall patterns and land degradation, which reduces the ability of species and people to cope with dryland conditions. Climate change will likely aggravate poverty, food and water insecurity in drylands.
Land degradation in drylands is known as desertification, and is the loss of the biological or economic productivity of land. Desertification reduces agricultural output, contributes to droughts and increases human vulnerability to climate change.
7. Nov. 2022 · Drylands are commonly defined as regions where precipitation is substantially smaller than atmospheric water demand (as quantified by potential evapotranspiration, PET). They are...
