| dc.description.abstract | Indicator with representative information is capable of displaying whole current situation and providing a developing orientation for the system. “Sustainable indicator”, in common use, is an assessment for understanding the sustainable development. While the continuous aggravation of environmental change, protection of the whole environmental ecosystem has become a major goal of all countries and human beings. During the process for a country to achieve the sustainable development, water resources, an indispensable factor, is tightly linked with the development of our life, economics and community, especially for small island but with large population like Taiwan. Therefore, well management of the water resources of reservoir watersheds for maintaining Taiwan’s sustainability is more momentous than before.
The main sustainability subject of this study includes society, ecosystem and economy. Fourteen indicators of reservoir watershed such as the tourist, over-using area of mountainside, resident, solid trash, ecosystem susceptible land, collapse land, pollution of water quality, protect area of water quality and water amount, rate of forest mantle, rate of soil corrasion, irrigation, water supply, road and economy estate were analyzed. Twenty-two important reservoir watersheds in Taiwan were discussed with GIS for quantification of each indicator value and weight of each indicator item comes from AHP (Analytical Hierarchy Process).
The result shows that for five watersheds of positive indicators are Hsin-Shan, Lan-Tan, Wu-Shan-Tou, Te-Chi and Jen-Yi-Tan watershed; and the top five of negative-restrained indicators are Fei-Tsui, Te-Chi, Jih-Yuen-Tan, Shin-Men and Shi-Shih reservoir watershed. As the present state of all consideration, the condition of Te-Chi reservoir watershed is the best one. The average of all reservoir watersheds is 12.36, which is among eleventh and twentieth out of twenty-two watersheds. It shows that top elevens are above the average of all reservoir watersheds. In other words, reservoir watersheds that ranking behind twentieth are below the average of all reservoir watersheds. | en_US |