国立研究開発法人 国際農林水産業研究センター | JIRCAS

Heavy Metal Loads Accompanying Rainfall Runoff on Low Farmland around Ariake Bay

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

Discharges of zinc, arsenic, cadmium, and lead from farmland were examined based on field measurements conducted between June 15 and July 13, 2006. The study fields are located in a lowland area where the irrigation water was contaminated with water drained from upstream farmlands (cyclic irrigation). The area of the farmland is 11.2 ha, of which 7.6 ha and 3.6 ha had been used for rice and soybeans, respectively. Heavy metal loads accompanying the rainfall runoff were considered to become higher with the increase in rainfall. Seventy percent of the zinc load, 62% of the arsenic load, 70% of the cadmium load, and 69% of the lead load were discharged with the rainfall runoff even though the rainfall runoff time was only 21% of the observation period.

刊行年月2008-10-01
作成者HAMADA KojiYOSHINAGA IkuoHITOMI TadayoshiMIURA AsaTAKAKI Kyoji
著者キーワード

creek canal

cyclic irrigation

公開者Japan International Research Center for Agricultural Sciences
データ作成日2008-10-01
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
42
4
開始ページ275
終了ページ283
DOI10.6090/jarq.42.275
権利Japan International Research Center for Agricultural Sciences
言語eng