Tashu Old Railroad Bridge Artificial Wetland was located under old railroad bridge at Gaoping River’s right bank in Kaohsiung City Tashu District. It, built on 2004, covered with an area of 120 hectare was the biggest artificial wetland and natural ecological riverbank park of the southern Taiwan. On August 8, 2009, “the 88 Taiwan Flood” caused that the site was flooded and the wetland lost the original function of water quality purification, including heavy damage on wetland environment and ecology. Old Railroad Bridge wetland pool and environmental landscape were reconstructed on March, 2011 through the government and local volunteers’ efforts and have been running till now. The main drainage source in system A was receiving discharged water class II after being treated by Yong Fen Yu Paper Co., Ltd., which flows into A1 inlet through gravity flow before entering into system A; system B is divided into two branches from Chuliao River drainage. Partial drainage flows from B1 pool into wetland system through gravity flow, and finally discharges from outlet into Gaoping River. Executive results of this project as of Dec. 31, 2016 are as follows: (A) Environmental investigation and monitoring for wetland site and boundary 1. There are 4 times of water quality monitoring, 4 times of hydrological measurement, 2 times of sediment monitoring and 2 times of ecological investigation were completed in 2016. For the results of hydrological measurement, average influent flow in system A and B was 12,507 and 6,830 m3/d and average outflow was 9,470 and 4,135 m3/d, which HRT (Hydraulic Retention Time) was 7.7 and 0.6 days, respectively. It showed HRT was higher than last year. 2. For the results of water quality monitoring, removal efficiency of BOD was the best efficiency than those item (SS, BOD, NH3-N and TP). And NH3-N was the next. Compared items in system A to system B, items in system A had better processing efficiency. Average HRT 7.7 days was observed in system A and 0.6 days in system B. 3. According to sediment monitoring results in the end of 2016, it showed that sediment pH in system A ＆ B was between 7.02 - 7.36 and 6.75 - 7.25, i.e. neutral. Total organic carbon content (TOC) showed in system A and B was between 0.25 - 6.26 % and 0.72 - 3.21 %; TPC was between 51 - 944 mg/kg and 70 - 1035 mg/kg; TNC was between 82 – 1,008 mg/kg and 115 - 928 mg/kg. For heavy metal, only Cd is lower than detection limit 4. According to results from ecological monitoring investigation, total 39 birds species in 23 families; 3 terrestrial reptiles species in 3 families; 4 amphibians species in 4 families; 31 odonata species in 5 families; 17 butterfly species in 5 families were recorded; few aquatic reptiles were recorded in this investigation, only including Ocadia sinensis (6 individual counts); record of 2~4 fish species was few for this investigation; 128 plant species in 53 families were recorded. (B)The results of wetland seeded teacher training and public guided tour 1. Wetland environment maintenance and administrative operation in at least 24 places Management and maintenance work for Old Railroad Bridge Wetland Park was promoted through the cooperation of the community and local volunteers to carry out the project for wetland environment maintenance and administrative operation in 25 places, totaling 526 person-times as of Dec.31 2. Organize 12 sessions of educational training seminar for wetland management maintenance unit In consideration of wide area covered by Old Railroad Bridge Wetland Park, it’s expected to organize educational training seminar for wetland management maintenance unit, allowing local volunteers and the community to understand and learn the maintenance and management of artificial wetland, increasing trainees’ assistance capability and efficiency. For the current planned operations, 12 sessions were completed in total of 244 person-times as of Dec. 31. 3. Organize 14 sessions of wetland seeded teachers and public guided tour training Nearby community development society and non-government organization is combined to jointly participate in guided tour training for Old Railroad Bridge Wetland Park, so as go deeper into the campus or other units for education promotional activities through trained seeded teachers on guided tours. 14 sessions were completed in total of 374 person-times as of Dec.31. 4. Organize at least 15 echelons of public’s participation in wetland park ecological and environmental education activity guided tour Old Railroad Bridge Wetland Park’s guided tour carried out through seeder teachers and volunteers to lead the participant public organization to personally experience in the function of artificial wetland ecological conservation and environmental education by interpreting how wetland purifies water quality and the role of animals and plants played in the wetland. At present, 26 sessions of ecological and environmental education guided tour were completed in total 839 person-times as of Dec. 31. 5. Video records in wetland restoration process For shooting activity training and ecological restoration results in the park, a video including maintenance management and various activities was recorded by video as of Dec. 31, 2015 for about a 12 min. film after post-clips. 6. Park billboards or explanation boards update operation in 10 places Currently, billboards or explanation boards in 10 places of the park have been completed as of Dec.31, 2016. People can understand more information by using smart mobile devices to directly scan QR code attached to billboard for webpage link. 7. Reporting of Old Railroad Bridge Educational Wetland Park Conservation in Tashu Old Railroad Bridge Wetland Park is successful, especially for the understanding of conservation results of Old Railroad Bridge Educational Wetland Park after interview, with press release published on Apple Daily on Dec. 28.

Wetland, Old Railroad Bridge