The　Huanjiang Station for　Karst　Agro-ecosystem　Research was established in 1999 in the north area (Huanjiang County) of　Guangxi　 Autonomous　District　and selected as a national field observation and research station of agro-ecosystems　 in 2005. It has a　total　 area of the 　experimental station is 146 ha which covers typical Karst land features including peaks (20%) and depressions (77%). The station includes three sites for studies and demonstrations of the 　remediation modes　 for the 　degraded Karst ecosystems, land use and agricultural system planning for newly-cultivated region, and field observations for ecological changes under different land-use systems (soil erosion and degradation, water dynamics, soil fertilities).

Research building	Field observation instruments