Study on the relationship between reduction of grazing intensity by sika deer and nitrogen leaching from surface soil

• Project/Area Number: 21580190
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Forest science
• Research Institution: Forestry and Forest Products Research Institute
• Principal Investigator: FURUSAWA Hitomi 独立行政法人森林総合研究所, 立地環境研究領域, 主任研究員 (40353841)
• Co-Investigator(Renkei-kenkyūsha): HASHIMOTO Toru 独立行政法人森林総合研究所, 北海道支所, 主任研究員 (70353810) ; KOGANEZAWA Masaaki 宇都宮大学, 農学部, 教授 (90241851)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2009: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: 土壌 / ニホンジカ / 森林 / 窒素流亡 / 窒素 / 採食

Research Abstract

Nitrogen dynamics was observed in soil inside and outside of deer exclosures located in forests in the Oku-Nikko area where deer have only lightly grazed. Both the soil nitrogen mineralization rate and nitrogen leaching rate were lower outside the exclosures than inside. Deer grazing has maintained the dominance of non-palatable species for deer on the forest floor and inhibited recovery of the shrub layer. Litter supplied from non-palatable species may therefore induce a decrease in soil nitrogen mineralization and nitrogen leaching in the forests of the lightly grazed Oku-Nikko area.

Research Products

• [Journal Article] 日光中禅寺湖西岸地域における林床植物の地上部現存量の推定 (2012)
  • Author(s): 古澤仁美、佐野哲也
  • Journal Title: 関東森林研究 Volume: vol.63(印刷中掲載確定)
  • Peer Reviewed
• [Journal Article] The effects of understory grazing by deer on aboveground N input to soil and soil N mineralization in a forest on Mt. Ohdaigahara in Japan (2011)
  • Author(s): Hitomi Furusawa、Teruaki Hino、Shinji Kaneko、Makoto Araki
  • Journal Title: 森林立地 Volume: vol.53 Pages: 1-8
  • NAID: 110008686817
  • Peer Reviewed
• [Journal Article] 日光千手ヶ原および西ノ湖地域におけるニホンジカが土壌の無機態窒素量に及ぼす影響 (2011)
  • Author(s): 古澤仁美、三浦覚、稲垣昌宏、稲垣善之、佐野哲也
  • Journal Title: 関東森林研究 Volume: vol.62 Pages: 183-186
  • Peer Reviewed
• [Journal Article] The effects of understory grazing by deer on aboveground N input to soil and soil N mineralization in a forest on Mt.Ohdaigahara in Japan (2011)
  • Author(s): Hitomi Furusawa(古澤仁美)、Teruaki Hino(日野輝明)、Shinji Kaneko(金子真司)、Makoto Araki(荒木誠)
  • Journal Title: 森林立地 Volume: 53 Pages: 1-8
  • Peer Reviewed
• [Journal Article] 日光千手ヶ原および西ノ湖地域におけるニホンジカが土壌の無機態窒素量に及ぼす影響 (2011)
  • Author(s): 古澤仁美
  • Journal Title: 関東森林研究 Volume: 62 Pages: 183-186
  • Peer Reviewed
• [Presentation] 日光中禅寺湖西岸地域における林床植物の地上部現存量の推定 (2011)
  • Author(s): 古澤仁美、佐野哲也
  • Organizer: 関東森林学会
  • Place of Presentation: 群馬県社会福祉総合センター(前橋市)
  • Year and Date: 2011-10-21
• [Presentation] 奥日光地域においてニホンジカが土壌窒素無機化速度に及ぼす影響 (2011)
  • Author(s): 古澤仁美、三浦覚、稲垣昌宏、稲垣善之、佐野哲也、南光一樹、綿野好則
  • Organizer: 日本森林学会
  • Place of Presentation: 静岡大学
  • Year and Date: 2011-03-25
• [Presentation] 奥日光地域においてニホンジカが土壌窒素無機化速度に及ぼす影響 (2011)
  • Author(s): 古澤仁美
  • Organizer: 日本森林学会
  • Place of Presentation: (地震のため学会は中止、要旨集発行をもって発表とした)
  • Year and Date: 2011-03-25
• [Presentation] ミヤコザサが林床に優占する森林においてニホンジカがいなくなると土壌の物理性は回復するか (2009)
  • Author(s): 古澤仁美、日野輝明、三浦覚、金子真司、荒木誠
  • Organizer: 日本緑化工学会
  • Place of Presentation: 淡路夢舞台国際会議場(淡路市)
  • Year and Date: 2009-09-27
• [Presentation] ミヤコザサが林床に優占する森林においてニホンジカがいなくなると土壌の物理性は回復するか (2009)
  • Author(s): 古澤仁美
  • Organizer: 日本緑化工学会
  • Place of Presentation: 淡路夢舞台国際会議場
  • Year and Date: 2009-09-27
• [Book] シカがササを食べると森林土壌はどうなる (2009)
  • Author(s): 古澤仁美
  • Publisher: 東海大出版会