Threatened subtropical woodland habitats

Name(s): 
Threatened subtropical low open woodland habitats
Threatened subtropical savanna woodland habitats
Threatened subtropical thorn woodland habitats
Endangered habitats of subtropical open thorn woodland
Nature 
***.
Background 
According to Holdridge's system of ecological zones, subtropical thorn woodland has a mean annual temperature of 18-24 and an average annual rainfall of 250-500 mm.
Type 
(D) Detailed problems