The Sinharaja World Heritage Site is the largest remnant of Sri Lanka's forests and contains the Sinharaja Forest Dynamics Plot. The Sinharaja Forest Dynamics Plot was established in 1993 by the University of Peradeniya in Sri Lanka; Forest Department, Sri Lanka; and ForestGEO. Currently the plot is jointly monitored by the Faculty of Applied Sciences, Uva Wellassa University; University of Peradeniya in Sri Lanka; the Forest Department, Sri Lanka; and ForestGEO.
The forests of Sri Lanka display relatively low diversity but very high endemism. For example, in the Sinharaja World Heritage Site, 70% of its 190 tree species are endemic. The Sinharaja Forest Dynamics Plot contains one-half of the species in the World Heritage Site's lowland rain forests and one-quarter of all of Sri Lanka's tree species. The forest demographic work at the plot complements ongoing silvicultural and economic studies of the Uva Wellassa University; University of Peradeniya; Forest Department, Sri Lanka; Yale School of Forestry and the Environment; and ForestGEO. Research issues at Sinharaja include silvicultural management for diverse forest products including hardwoods, forest restoration, and the biological stability of forests of low biological diversity.