Wanzhou Regional Eco-environment Monitoring Station (WREEMS) is a component of the Three-Gorges-Project Ecology and Environment Monitoring Systems administrated by the Three Gorges Project Construction Committee Office of Chinese State Council. It was built in 1997 at Lishu Village, Changling Township, Wanzhou District, Chongqing City by Chengdu Institute of Mountain Hazards and Environment, Chinese Academy of Sciences and Ministry of Water Resources. 

WREEMS is located in the central south of the Yangtze Three Gorges Reservoir Area at 108 ° 30'E and 30 ° 45'N with an elevation of 265m, where geographically characterizes as hilly terrains and low mountains, exposing with Jurassic Shaximiao and Penglaizhen strata which form the purple soil. The climate there is typical of subtropical humid monsoon classification with an average annual temperature 14-19 ° C, average annual precipitation 1000-1350mm and average annual sunshine hours 1300-1600hr. Regional vegetation is characteristic of evergreen broad-leaved forests. 

Observation and experimental contents includes:  

·   Soil erosion monitoring 

·   Non-point pollution monitoring 

·   Immigration and socio-economic follow-up survey 

·   Experiment and demonstration on mountainous eco-agriculture and restoration and reconstruction of degraded ecosystems