| dc.description.abstract | The Ecological Engineering idea source from to Germany as well as Switzerland gradually promoted in recent years to the world. In 1938 German Seifert first proposed the near natural river brook renovates the concept, refers can in complete the traditional rivers government task in the foundation to be allowed to achieve approaches the nature, is inexpensive and the maintenance scenery beautiful appearance one kind of government plan.
But Nari typhoon heavy losses Taiwan in 2001, because the precipitation far surpasses t estimates the reasonable value, wreak the river floods, after the typhoon crosses, the pebbles are densely covered the river, produce the official, study did not hope can friendly with this natural resource, restore the river facial expression, protects outside the coast inhabitant safety, can friendly with the ecological engineering, continue the resources the regeneration use, then the improvement water quality, maintains the river natural ecology.
In this thesis, using Taoyuan Nakan River to be an example, the near natural environment which the Ecological Engineering reconstruct, not only improve the water quality, but also provide the daily leisure amusement and rest space, each kind of living thing perches the environment, national territory security, water and soil conservation, ecology care, environment green beautification, landscape maintenance, nature education, national health and rest.
Water quality of purification result various work areas, Nakan bridge section SS, BOD drop ratio highest, result best, the DO average rise percentage comes by the Hede bridge section to be highest, also simultaneously promotes the week to suffer the environment landscape green beautification, introduces the diverse natural ecology element, outside the rich ecology food chain, also provides the county people to take a walk, the leisure, only the heart high quality environment, the creation is intimate with the water resources adaptation extremely good case. | en_US |