| Project/Area Number |
23380079
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Forest science
|
|---|
| Research Institution | Tohoku University |
|---|
Principal Investigator |
SEIWA Kenji 東北大学, (連合)農学研究科(研究院), 教授 (40261474)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
SAITO Masanori 東北大学, 大学院・農学研究科, 教授 (40355079)
HAYASHI Seiji 国立環境研究所, 水土壌圏環境研究領域, 室長 (10300849)
SUYAMA Yoshihisa 東北大学, 大学院・農学研究科, 准教授 (60282315)
UMEKI Kiyoshi 千葉大学, 大学院・園芸学研究科, 准教授 (50376365)
FUKASAWA Yu 東北大学, 大学院・農学研究科, 助教 (30594808)
|
|---|
| Project Period (FY) |
2011-04-01 – 2014-03-31
|
| Project Status |
Completed (Fiscal Year 2013)
|
| Budget Amount *help |
¥18,980,000 (Direct Cost: ¥14,600,000、Indirect Cost: ¥4,380,000)
Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2012: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2011: ¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000)
|
|---|
| Keywords | 種多様性 / 落葉広葉樹林 / 病原菌 / 菌根菌 / ギャップ / スギ人工林 / 水源涵養機能 / 水質浄化能力 / Janzen-Connellモデル / 生態系機能 / 水浸透速度 / 細根 / ジャンゼン・コンネル仮説 / CO2固定能 / 人工林施業 / 強度間伐 / ジャンゼン-コンネル仮説 / 内生菌 / 水浸透能 |
|---|
| Research Abstract |
In a temperate forest, we found clear evidences that both negative-feedback with pathogenic fungi and positive-feedback with mycorrhizal fungi strongly determine the seedling performance and consequent species-diversity. In shaded forest understory, host-specific pathogens caused seedling death particularly for conspecifics,increasing species-diversity. In contrast, the host-specific mycorrhizal fungi facilitated seedling performance particularly for conspecifics in gaps, decreasing the diversity.
In artificial conifer forests of different species diversity, we revealed that both the ecosystem functions (i.e. ) increased with increasing the species diversity.
|
