Field Trip To Double Haven and Ap Chau

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Recommended: the importance of mangrove

In this field trip, I have visited Lai Chi Wo and Ap Chau. In the morning on 8th March, we got on the boat at Ma Liu Shui Pier. The boat entered the area of Double Haven through the Tolo Harbour and North Channel. We arrived at Lai Chi Wo after two-hour boat ride.

Lai Chi Wo is in the Double Haven marine park of Hong Kong Global Geopark of China. It is located in the northern New Territories of Hong Kong. The features of this place include Hakka walled village, Fung Shui woodland, Lai Chi Wo Nature Trail, mangrove and wetland. The geological age of this place is about 164 million years ago ( Jurassic Period) and the rock type is Tuff mostly. There are over 30 White-flowered Derris along the Lai Chi Wo Nature Trail. All of them are over 50 years ago. The White-flowered Derris is a kind of climbing stems. They attach and grow on the Camphor tree. At the beginning, they were as skinny as our finger. But they have grown as thick as human thigh through many centuries. The derris have slight toxin - Anesthetic Rotenone which the villagers use to catch fishes and farm.

Walked along the nature trail, we arrived to the wetland and mangrove. Wetland is an area which is a junction between land and water. Wetland is just like the kidney of human. It filters the pollutants and regulates the surface runoff so as to prevent the flooding of mangroves. It has bled many marine animals, such as Dwarf Eel Grass, Sesarmas, Mudskippers, Magpie Flat...etc. Therefore, it has high ecological value. There are two sea-grass species, which are Oval Halophila and Dwarf Eel Grass, could be found in Lai Chi Wo. The Dwarf Eel Grass has roots, leaves and stems. It takes root in floating mud and extracts the soil nutrients through the roots. The extensive ...

... middle of paper ...

...Retrieved from http://www.afcd.gov.hk/english/country/cou_vis/cou_vis.html

Agriculture, Fisheries and Conservation Department. (27, August 2013). Planning and management-enforcement. Retrieved from http://www.afcd.gov.hk/english/country/cou_vis/cou_vis_mar/cou_vis_mar_pla/cou_vis_mar_pla_enf.html

Hong Kong Geopark / AFCD. (18, March 2014). Hong kong global geopark. Retrieved from http://www.geopark.gov.hk/en_index.htm

Hong Kong Geopark / AFCD. (2011). Geopark-planning & protection principles. Retrieved from http://www.geopark.gov.hk/en_s1h.htm

Wikipedia. Hong kong global geopark. (2013, June 12). Retrieved from http://en.wikipedia.org/wiki/Hong_Kong_Global_Geopark

Wikipedia. Lai chi wo. (2013, September 30). Retrieved from http://en.wikipedia.org/wiki/Lai_Chi_Wo

Wikipedia. Ap chau. (2013, February 27 ). Retrieved from http://en.wikipedia.org/wiki/Ap_Chau

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