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畑地造成に伴う水質の変化
| Title: | 畑地造成に伴う水質の変化 |
| Other Titles: | Changing Water Quality Resulting from Land Reclamation |
| Authors: | 石黒, 宗秀1 Browse this author →KAKEN DB | | 小林, 慎太郎2 Browse this author | | 三野, 徹3 Browse this author | | 丸山, 利輔4 Browse this author |
| Authors(alt): | ISHIGURO, Munehide1 | | KOBAYASHI, Shintaro2 | | MITSUNO, Toru3 | | MARUYAMA, Toshisuke4 |
| Keywords: | 改良山成畑 | | 有機物・栄養塩類 | | 水質 | | 農地 | | 水質汚濁 | | 自然発生源 | | 降雨 | | 無機成分 | | 小流域 | | 土壌養分 | | 山地流域 |
| Issue Date: | Dec-1982 |
| Publisher: | 農業農村工学会 |
| Journal Title: | 農業土木学会論文集 |
| Journal Title(alt): | Transactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering |
| Volume: | 102 |
| Start Page: | 36 |
| End Page: | 43, a1 |
| Publisher DOI: | 10.11408/jsidre1965.1982.102_36 |
| Abstract: | 畑地造成によって, それまで安定であったさまざまな物質の循環が乱され, 畑地としての新たな物質循環が形成される。本研究では, その物質循環の反映としての雨水流出水の水質に着目し, 造成畑・山林・既成畑において比較調査を行った。そして, 山林と農耕地では物質循環構造が基本的に異なること, 耕地として安定した系が形成されるまでの過渡的な期間は, 物質循環は不安定であり流出水による水質負荷が大であることを示した。 | | In order to investigate the effects of reclamation on the natural cycle of materials, the runoff quality of water from the newly reclaimed land existing reclaimed land, and natural basins was observed on a monthly basis in 1981. In this investigation, the quality of water with M alkalinity, Fe, EC, Na+, Mg2+, Ca2+, K+, NO3-N, NH4-N, PO4-P was analyzed. The runoff quality of water from the newly reclaimed and unreclaimed basins under the conditions of a small flood was also observed.Comparing water quality in three kinds of basins, the following results were obtained: The concentrations of solutes in the case of the newly reclaimed basin were comparatively high and variable, but those in the case of the unreclaimed basin were low and almost without variation. The concentrations of fertilizer components in the existing reclaimed basin were lower than those in the newly reclaimed basin however, the concentrations of other components in the existing reclaimed basin were lower than those in the newly reclaimed basin, but higher than or roughly the same as those in the unreclaimed basin.Comparing the quality of water in the newly reclaimed basin under the conditions of a small flood with that under ordinary conditions, the following results were obtained: The concentrations of fertilizer components in the case of a small flood were higher than those in the case of the ordinary conditions, but the concentrations of other components during the small flood tended to be lower than those under ordinary conditions. Since the discharge greatly increased during the small flood, the loads of fertilizer components became much larger than those in the case of the ordinary conditions.In conclusion, land reclamation tends to cause a loss of materials, and therefore, tends to cause an instability in the cycle of materials. |
| Rights: | © 社団法人 農業農村工学会 | | © The Japanese Society of Irrigation, Drainage and Rural Engineering |
| Type: | article |
| URI: | http://hdl.handle.net/2115/71042 |
| Appears in Collections: | 農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 石黒 宗秀
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