在台灣，海灘因自然或人為的因素，有著不同層面與程度的劣化。為了解海灘劣化情況與原因，作為復育之參考，本研究結合三生永續的概念，將海灘劣化定義為「海灘在生活、生產、生態功能之衰退」，並透過客觀及主觀評估了解宜蘭蘇澳頂寮里海灘之劣化情況與原因。客觀評估使用海灘劣化指標，包含：海灘侵蝕、人工結構物及海灘廢棄物；主觀評估使用海灘使用者觀點，最後連結主客觀評估結果，提出海灘復育之建議。
海灘劣化之主、客觀評估結果顯示，頂寮海灘正因生活、生產及生態功能的衰退而劣化。該海灘的劣化與海灘侵蝕及海灘廢棄物有關。在海灘侵蝕部分，無論在長時距、中時距或短時距下皆顯示頂寮海灘呈現侵蝕的狀態。其原因以人為活動造成之蘭陽溪輸沙量減少及北方設置的突堤最有影響，此現象造成頂寮海灘生活功能(國土保安、休閒遊憩)及生產功能(經濟活動)的衰退。在海灘廢棄物部分，頂寮海灘之廢棄物以冬季為多。海灘使用者指出頂寮海灘的廢棄物近50至70年間有變多的趨勢，因此造成頂寮海灘生活功能(休閒遊憩)、生態功能(生物棲地)及生產功能(經濟活動)的衰退。人工結構物(消波塊)則因容易造成海灘侵蝕而間接影響海灘之功能。
為恢復頂寮海灘之功能，必須解決海灘侵蝕及海灘廢棄物增加的問題。在海灘侵蝕方面，雖部份歸因於自然營力，但仍可以透過改善人為影響減緩海灘侵蝕的速率。例如設置養灘的突堤時，需考量到對附近海岸線的影響；控管蘭陽溪的沙石開採，以防人為因素導致蘭陽溪輸沙量減少，進而影響頂寮海灘的沙源。在海灘廢棄物方面，由於頂寮海灘之廢棄物多來自海灘活動，其中又以抓鰻苗及垂釣時產生的廢棄物為多，不過多數受訪者會隱瞞此事實。因此必須對至該海灘活動之使用者進行宣導，並在海灘入口處設置垃圾桶，減少由海灘使用者造成的廢棄物。此外，亦需對海上作業船隻及流域聚落進行宣導，以減少來自海上漁業及流域聚落的廢棄物，達到恢復海灘原有功能之目的。最後，需持續關注消波塊附近之地形變化或將其移除，避免海灘繼續侵蝕。

A Beach offers variety of functions such as buffering the coast, providing habitats for the living things and holding a great place for human recreational and economic activities. As the functions of a beach do not work regularly or the functions have been weakened, this beach and its surrounding area indeed may have been in the process of degradation. In Taiwan, numerous beaches are degraded by natural and artificial factors in different dimensions and degrees of degradation. In order to distinguish whether a beach is degrading and the reasons of how these beaches degrade, different temporal references have to be reviewed to establish beach degradation indicators. The indicators operated in Dingliao Village, Yilan include coastal evolution, artificial constructions and the volume and source of beach litter. Furthermore, beach user perceptions are also investigated in order to find out how beach degradation affects them which include local resident and beach visitors. These indicators are significant for the future assessment of a sustainable beach development.

《中文部分》
1.石再添、鄧國雄、張瑞津、黃朝恩、石慶得、楊貴三、許民陽、曾正雄(2008)：地學通論，台北：吉歐文教。
2.林俊全(2008)：台灣的十大地理議題，台北：遠足文化。
3.林雪美、王文誠、沈淑敏(2009)：宜蘭海岸環境變遷與資源整合之永續規劃與管理，行政院國家科學委員會輔助專題研究計畫成果報告。
4.孫志鴻、連敏芳、劉英毓(2005)：地方永續發展與民眾參與──以宜蘭縣示範計畫為例，研討雙月刊，29(5):66-78。
5.孫培基(2003)：宜蘭沖積平原與河海關係調查報告，經濟部水利署第一河川局副工程司，13:34-47。
6.郭一羽編(2003)：海岸工程學，台南：文山書局，p.203-238。
7.許民陽(1998)：颱風對花東海岸地質環境的影響，地質，18(1):1-16。
8.許民陽、張政亮(2002)：蘭陽平原海岸後退之研究，中國地理學會會刊，30:57-76。
9.許民陽(2005)：台灣海岸侵蝕後退的現況──淡水河口、蘭陽平原、花東海岸篇，地質，24(1): 64-75。
10.許玲玉(2002)：退化土地的地景復育，地景保育通訊，16:15-19。
11.許泰文、溫志中(1997)：河川與海岸穩定對策之研究──宜蘭海岸侵蝕對策之研究(Ⅲ)，國立成功大學水利及海洋工程研究所。
12.張隆盛(1999)：海岸地帶發展與管理，台灣地區海岸資源保育與管理研討會論文集，國立台灣大學地理學研究所，p.2-10。
13.張憲國、李忠潘(1994)：海堤前底床特性之現場調查與分析，中華民國第16屆海岸工程研討會論文集，中山大學海洋環境學系，p.330-347。
14.陳映璇(2008)：台灣圖資影像在沙質濱線繪製的應用與限制--以白沙灣、八里海岸為例，國立台灣師範大學地理研究所碩士論文。
15.陳癸月、盧光輝 (2004)：蘭陽平原土地利用與海岸變遷，華岡農科學報，13:1-14。
16.彭佳偉(2003)：中港溪河口地形不同時距的變動特性，國立台灣師範大學地理研究所碩士論文。
17.游慶豐 (1993)：宜蘭海岸線變遷之研究，國立成功大學水利及海洋工程研究所碩士論文。
18.經濟部水利署第二河川局(2007)：苗栗海岸復育研究計畫總報告，4-3~4-4。
19.楊宗諭(2009)：基隆市長潭里海灘垃圾豐度、組成與來源之研究，國立台灣海洋大學環境生物與漁業科學學系碩士論文。
20.台灣省第一河川局(1998)：宜蘭縣海岸地形觀測研究計畫報告(民國84年-民國86年度)。
21.台灣省第一河川局(2000)：宜蘭縣海岸地形觀測研究計畫報告(民國87年-民國89年度)。
22.台灣省水利局第一工程處(1995)：宜蘭縣海岸地形觀測研究計畫報告(民國81年-民國83年度)。
23.鍾鴻文(2002)：宜蘭海岸地形斷面特性分析與預測，國立成功大學水利及海洋工程研究所碩士論文。

《西文部分》
24.Al-Awadhi J. M., S. Omar A. & Misak R. F.(2005):Land degradation indicators in Kuwait, 16:163-176.
25.Ariza, E., Jiménez, J.A. & Sardá, R.(2008):Seasonal evolution of beach waste and litter during the bathing season on the Catalan coast, Waste Management, 28:2604–2613.
26.Ballance, A., Ryan, P.G. & Turpie, J.K.(2000):How much is a clean beach worth? The impact of litter on beach users in the Cape Peninsula, South Africa, South African Journal of Science, 96:210-213.
27.Cervantes, O. & Espejel, I.(2008):Design of an integrated evaluation index for recreational beaches, Ocean & Coastal Management, 51(5):410-419.
28.Claereboudt, M. R.(2004):Shore litter along sandy beaches of the Gulf of Oman, Marine Pollution Bulletin, 49:770-777.
29.Clark, J.R.(1996):Coastal zone management handbook, Lewis Publishers, United States of America.
30.Cu,O. (1993) : Land degradation and the coastal environment of Nigeria,Catena, 20(3): 215-225.
31.Coe, J.M. & Rogers, D.B.(1997):Marine Debris:Sources, Impacts and Solutions, New York:Springer, 432p.
32.Defeo, O., McLachlan, A., Schoeman, D. S., Schlacher, T. & Dugan, J. (2009):Threats to sandy beach ecosystems: a review, Estuarine, Coastal and Shelf Science, 81(1):1-12.
33.Derraik, J.G.B.(2002):The pollution of the marine environment by plastic debris : a review, Marine Pollution Buttetin, 44:842-852.
34.Galgani, F., Jaunet, S., Campillo, A., Guenegen, X. & His, E.(1995):Distribution and abundance of litter on the continental shelf of the North-western Mediterranean Sea, Marine Pollution Bulletin, 30:713-717.
35.Garcia C. & Servera J.(2003):Impact of tourism development on water demand and beach degradation on the island of Mallorca(Spain), Geografiska annaler. Series A. Physical geography, 85(3-4):287-300.
36.Golik, A.(1997):Debris in the Mediterranean Sea:types, quantities, and behavior, In: Coe, J.M. & Rogers, D.B.(ed.) Marine Debris: Sources, Impacts and Solutions. New York: Springer; 7-14.
37.Harris, J.A., Birch, P. & Palmer, J.P.(1996):Land Restoration and Reclamation: Principle Practice. Harlow, Essex, England: Longman, 230p.
38.Hegde, A.V. & Reju, V.R.(2007):Development of coastal vulnerability index for mangalore coast, India, Journal of Coastal Research, 23(5):1106-1111.
39.Hsu, J. R-C. & Yu, M. M-J.(2006): Recent Beach Restoration Projects in Taiwan, Third Chinese-German Joint Symposium on Coastal and Ocean Engineering National Cheng Kung University, Tainan.
40.Isaac, R.S., Ana, C. F., Moˆ nica, W.K. & Gilberto, F.(2005):Influence of socio-econimic characteristics of beach users on litter generation, Ocean & Coastal Management, 48:42–752.
41.James, R.J.(2000):From beaches to beach environments: linking the ecology, human-use and management of beaches in Australia, Ocean & Coastal Management, 43:495-514.
42.Johnson, Douglas, L, Lewis & Laurence, A.(1995):Land degradation : creation and destruction , Oxford, UK ; Cambridge, USA : Blackwell, 335p
43.Kiunsi, R. B. & Meadows, M. E.(2006):Assessing land degradation in the Monduli district, northern Tanzania, land degradation & development, 17:509-525.
44.Kuriyama, Y., Tokai, T., Tanata, K. & Kanehiro H.(2003):Distribution and composition of litter on seabed of Tokyo Gulf and its age analysis, Nippon Suisan Gakkaishi, 69:770-781.
45.Leatherman, S. P.(1997):Beach rating:a methodological approach, Journal of Coastal Research, 13(1):253-258.
46.Luci, C. C. P., Jose, A. J., Carmen, M. & Rauqurio, M. da C.(2003):The influence of the envirnmental status of Casa Caida and Rio Doce beaches(NE-Brazil) on beaches users, Ocean & Coastal Management, 46:1011–1030.
47.Madzena, A. & Lasiak, T.(1997):Spatial and temporal variations in beach litter on the Transkei coast of south Africa, Marine Pollution Bulletin, 34(11):900-907.
48.Nelson, C., Morgan, R., Williams, A.T. & Wood, J.(2000):Beach awards and management, Ocean & Coastal Management, 43:87-98.
49.Philipp, R., Pond, K. & Ress, G.(1994):Medical waste increasing in the coastline, British Medical Journal, p.309–471.
50.Ribic, C. A.(1998):Use of indicator items to monitor marine debris on a New Jersey beach, Marine Pollution Bulletin, 36(11):887-891
51.Roca, E., Riera, C., Villares, M., Fragell, R., & Junyent, R.(2008):A combined assessment of beach occupancy and public perceptions of beach quality: a case study in the Costa Brava, Spain, Ocean & Coastal Management, Ocean & Coastal Management, 51:839–846.
52.Schlacher, T.A. & Thompson, L.M.C.(2008):Physical impacts caused by off-road vehicles to sandy beaches: spatial quantification of car tracks on an Australian barrier island, Journal of Coastal Research, 24(2B):234-242.
53.Silva, C.P., Alves, F.L. & Rocha, R.(2007):The management of beach carrying capacity : the case of northern Portugal, Journal of Coastal Research, SI50:135-139.
54.Silva-Iñiguez, L. & Fischer, D.W.(2003):Quantification and classification of marine litter on the municipal beach of Ensenada, Baja California, Mexico, Marine Pollution Bulletin, 46:132-138.
55.Simone, S. O. & Joel, C. C.(2007):Quantification and classification of marine litter on beaches along ArmaCdo dos Bdzios, Rio de Janeiro, Brazil, Journal of Coastal Research, 23(2):421-428.
56.Somerville, S.E., Miller, K.L. & Mair, J.M.(2003):Assessment of the aesthetic quality of a selection of beaches in the Firth of Forth, Scotland, Marine Pollution Bulletin, 46:1184-1190.
57.storrier, K.L., McGlashan, D.J., Bonellie, S. & Velandertt, K.(2007):Beach litter deposition at a selection of beaches in the Firth of Forth, Scotland, Journal of Coastal Research, 23(4):813- 822.
58.Trumbic, I.(2005):Tourism carrying capacity assessment in the Mediterranean coastal tourist destinations, Proceedings of the 14th Biennial Coastal Zone Conference New Orleans, Louisiana.
59.Tsagbey, S.A., Mensah, A.M. & Nuno, F.K.E.(2009):Influence of Tourist Pressure on Beach Litter and Microbial Quality –Case Study of Two Beach Resorts in Ghana, West African Journal of Applied Ecology,15
60.University of Hawaii Sea Grant Extension Service, County of Maui Planning Department(1997):Beach management plan for maui.
61.Velander, K. & Mocogni, M.(1999):Beach litter sampling strategies: is there a 'best' method?, Marine Pollution Bulletin, 38(12):1134-1140.
62.Veloso-Gomes, F., Taveira-Pinto, F., Luciana, D. N. & Barbosa, P.(2004) Erosion risk levels at the NW Portuguese coast: The Douro mouth - Cape Mondego stretch.Preview, Journal of Coastal Conservation, 10:1, p.43-52.
63.Williams, A.T., Tudor D.T. & Randerson P.(2003):Beach litter sourcing in the Bristol channel and Wales, U.K., Water, Air, and Soil Pollution, 143:387-408.
64.Williams, P. & Lemckert, C.(2007):Beach carrying capacity: has it been exceeded on the Gold Coast ? Journal of Coastal Research, SI50:21-24.

《網路部份》
65.行政院國家永續發展委員會 http://sta.epa.gov.tw/NSDN/。
66.張文亮，台灣沿海濕地生態環境 http://kc.kshs.kh.edu.tw/library/wenlian/tai-24.pdf (2009/3/27 下載)。
67.El-Beltagy, A.(2000) Land degradation: regional and global., Paper to the Conference on the United Nations and Global Governance in the New Millennium, United Nations University : Tokyo. http://www.unu.edu/millennium/el-beltagy.pdf (2008/3/27下載)。
68.Erginal A. E., Akbulak C., Gönüz A. & Doğan M.(2008) Investigation of Human Induced Coastal Degradation on the Kepez Delta (NW Turkey) Using Aerial Photo Interpretation, Remote Sensing and Field Data, Third international conference BALWOIS, http://balwois.com/balwois/administration/full_paper/ffp-1126.pdf (2009/4/30下載)。