The Effects of the Land Reclamation and Freshening Project on the Water Environment in Lake Nakanoumi:The Prior Investigation and its Problems
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概要
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Since December 1968 the Nakanoumi Reclamation Project by the Ministry of Agriculture and Forestry has been in progress to expand farming lands covering a total area of 2800 ha. In 1980 it is scheduled to turn the remaining water basin of Lake Nakanoumi into a freshening reservoir to ensure irrigation water for the agricultural uses.<BR>The present article describes an epitome of prior investigations to forecast impacts of the freshening project on the lake environment.<BR>In recent years the state of the brackish water environment of Lake Nakanoumi has tended to be changed by the water quality deterioration intensified rapidly and the lake hydraulics which has been altered by the construction of dikes for enclosing newly reclaimed lands. Under such situation, the fact that analytical methods for quantifying a mass of data collected from field surveys have not been established makes it difficult to grasp precisely the tendency of lake environment.<BR>It is urgently important to establish practical methods of prior investigations capable of elucidating quantitatively the tendency of water environment from the viewpoint of assessing environmental impacts of large-scale development projects.
- 日本陸水学会の論文
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