@article{oai:kagawa-u.repo.nii.ac.jp:00003522,
 author = {中島, 沙知 and Nakashima, Sachi and 山田, 佳裕 and Yamada, Yoshihiro and 多田, 邦尚 and Tada, Kuninao},
 issue = {122},
 journal = {香川大学農学部学術報告, Technical bulletin of Faculty of Agriculture, Kagawa University},
 month = {Feb},
 note = {n the upper reaches of the Yoshida River where the nitrogen concentration in headwaters was high, the distribution of nitrogen and major ions were clarified. About 70% of total nitrogen was NO₃⁻‐N. NO₃⁻‐N was the highest concentration of 2.1mg/l in headwaters. Its concentrations in the down stream in the investigation area were about 1mg/l. The major ion concentrations showed the reverse tendency with NO₃⁻‐N. NO₃⁻‐N was higher, as the forest rate in the catchment was higher. This result shows that in the upper reaches of the Yoshida River, the nitrogen load from the forest had a greater impact on nitrogen concentration of the river.},
 pages = {65--69},
 title = {讃岐山脈を源流とする吉田川の上流域における窒素の分布},
 volume = {59},
 year = {2007},
 yomi = {ナカシマ, サチ and ヤマダ, ヨシヒロ and タダ, クニナオ}
}