美工圖片   Investigation of Current Status in Hua-lien River System (Water Resources Planning Institute, WRA, MOEA. March, 2004)

 

The integrated river management, in terms of flood control, water conservancy, water amenity and ecological conservation, aims to keep sustainable development of environment and resources. For this purpose, it must take the ecological environment of the river into account, first of all, to find out the adaptation of the ecosystem to the river environment. The Investigation of Current Status in Hualien River System, through investigation of the basic information, including human activities, socio-economic, hydrologic and physiographic information, bio-environment, ecosystem, etc., is to establish an eco-databank and internet website system to provide necessary information for the water-related agencies and professionals for the management and development of the Hualien River System.

From the two-year research, it shows that the Hualien River System is characterized by the meandering river with the habitat of pool-riffle type and has high sediment concentration, resulting in the high variability of bed configuration. The hydrological conditions and habitat status are classified as the unstable environment for lotric ecosystem.

The flora and fauna found in the Hualien River System are as follows:

◆  For mainstream: with 27 fish species, 12 mammal species, 87 bird species, 12 amphibian species, 11 reptile species, and 232 flora species.

Hualien River
 

◆  For tributaries: with 15 fish species, 11 mammal species , 75 bird species , 12 amphibian species , 14 reptile species , and 309 flora species.

Not only dominated by the natural environment, humans are having a marked impact on the riparian ecosystem. For example, water pollution and quarrying have worsened the habitats for wildlife. The ecological conservation should start from reducing the total pollution amount and improving the river works along the mainstream and its tributaries.