As part of the rail merger in late 2007, the MTR took over management of a 37-hectare wetland habitat of fishponds, marsh and reed beds preserved for the breeding and roosting of migratory birds. It was established as a compensation for the loss of wildlife habitat in the construction of the Lok Ma Chau Spur Line which dissects the Long Valley, a sensitive wetland area of ecological importance for the migratory bird populations of the region.

Under strict Government EPD guidelines, the approach was taken to enhance an existing semi-abandoned fish farm site adjacent to the rail terminus and actively manage vegetation and water quality control, fish stocks, drain-down of ponds and construct the water distribution network. The purpose was to increase the carrying capacity of wetland species of conservation importance. The management of the habitat has exceeded the most optimistic of expectations and annually attracts over 200 species of birds including a number of endangered species. However, none of the species monitored at this site which also includes mammals, butterflies and dragonflies, and herpetofauna are listed on the IUCN Red List.