国立研究開発法人 国際農林水産業研究センター | JIRCAS

Model Estimation of the Water Purification Capacity of Lost Tidal Flats

JARQ : Japan Agricultural Research Quarterly
ISSN
00213551
書誌レコードID(総合目録DB)
AA0068709X
本文フルテキスト

The water environment of Ariake Bay has been degraded for decades, with some observers suggesting that this problem might be due to the decrease in tidal flat areas. However, for lost tidal flats, the water purification capacity cannot be estimated without sufficient historical data. A new procedure for estimating the water purification capacity of the Isahaya Tidal Flat (i.e., a lost tidal flat) was developed based on an ecosystem model. Given their similarities, an ecosystem model was first developed for the tidal flats of the Shiota River, and then recalibrated using the limited historical data available for the Isahaya Tidal Flat. The water purification capacity of the Isahaya Tidal Flat was estimated to be 0.39 t-N d-1 in 1988, when the tidal flat covered a total area of 35.64 km2, which is equivalent to just 36% of total nitrogen loading from the basin (1.07 t-N d-1). The denitrification capacity of the Isahaya Tidal Flat was shown to be 7.3 × 10-3t-N km-2 d-1. Both the water purification capacity and denitrification capacity estimated for the muddy Isahaya Tidal Flat were much less than those of sandy tidal flats (e.g., tidal flats at Sambanse).

刊行年月2016-10-01
作成者Toshiya NISHIOWataru NISHIJIMAKoji HAMADAKyoko HATA Kisaburo NAKATA
著者キーワード

Ariake Bay

bottom sediment

ecosystem model

denitrification

water quality

公開者Japan International Research Center for Agricultural Sciences
データ作成日2016-10-01
国立情報学研究所メタデータ主題語彙集(資源タイプ)Journal Article
50
4
開始ページ345
終了ページ352
DOI10.6090/jarq.50.4
権利Japan International Research Center for Agricultural Sciences
関連するリソース : J-STAGE
言語eng