Effects of P limitation on nutrient cycling intemperate forests

• Project/Area Number: 21580073
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Plant nutrition/Soil science
• Research Institution: Hokkaido University
• Principal Investigator: NAKAHARA Osamu 北海道大学, 大学院・農学研究院, 准教授 (10253519)
• Co-Investigator(Kenkyū-buntansha): SHIBUYA Masato 北海道大学, 大学院・農学研究院, 准教授 (10226194)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2009: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 養分制限 / 窒素制限 / リン制限 / アロフェン / イモゴライト / リター分解 / リグニン / 養分循環 / 温帯林 / 地球温暖化 / 有機物分解 / 無機化 / 二酸化炭素 / 窒素飽和

Research Abstract

We examined nutrient limitation in 26 stands of larch forest onvolcanic parent material deposited 300-20,000 y BP at Mt. Shirahata, Sapporo, Japan.Root-ingrowth bioassay showed that of the 26 stands examined 13were N limited,3were Plimited, and 10 were N and P colimited. Nitrogen limitation was common in stands with afoliar N:P ratio<16. In stands with foliar N:P ratio>16, colimitation by N and P dominated,but P limitation was observed at three stands.

Research Products

• [Journal Article] 見かけの塩吸収によるアロフェン質黒ボク土下層土の硝酸イオン吸着と移動遅延 (2011)
  • Author(s): 田村,一剋夏,田中,加藤,長谷川
  • Journal Title: 日本土壌肥料学雑誌 Volume: 82 Pages: 121-129
  • Peer Reviewed
• [Journal Article] 見かけの塩吸収によるアロフェン質黒ホク土下層土の硝酸イオン吸着と移動遅延 (2011)
  • Author(s): 田村和杏・中原治, 他
  • Journal Title: 日本土壌肥料学雑誌 Volume: 82 Pages: 121-129
  • Peer Reviewed
• [Journal Article] Soil andstream water acidification in a forestedcatchment in central Japan (2010)
  • Author(s): Nakahara, Takahashi, Sase, Matsuda,Ohizumi,Fukuhara, Inoue, Takahashi,Kobayashi,Hatano, Hakamata
  • Journal Title: Biogeochemistry Volume: 97 Pages: 141-158
  • Peer Reviewed