Exploring a tree ecophysiological index to evaluate nitrogen saturation in forest ecosystems
| Project/Area Number |
18K11664
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Review Section |
Basic Section 63040:Environmental impact assessment-related
|
|---|
| Research Institution | Tokyo University of Agriculture and Technology |
|---|
Principal Investigator |
Watanabe Makoto 東京農工大学, (連合)農学研究科(研究院), 准教授 (50612256)
|
|---|
| Project Period (FY) |
2018-04-01 – 2021-03-31
|
| Project Status |
Completed (Fiscal Year 2020)
|
| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
|
|---|
| Keywords | 窒素飽和 / 指標 / 被食防衛 / 樹木生理生態学 / 大気汚染 / コナラ / 成木 / 窒素利用効率 / 樹木の窒素利用 / 成木調査 |
|---|
| Outline of Final Research Achievements |
The purpose of the present study is to determine the index for nitrogen saturation in the forest ecosystem from the viewpoint of tree physiological ecology. The plant material was konara oak, which is representative species in Satoyama-forest in Japan. I collected leaves from the crown of mature konara oak and analyze the traits. Concentrations of primary metabolite and secondary metabolite were decreased with increasing soil nitrogen availability. These results suggest that the leaf traits can be used as an index to estimate progress of nitrogen saturation in konara oak forest.
|
| Academic Significance and Societal Importance of the Research Achievements |
窒素飽和は森林の健全性を損ねる重要な環境問題の一つであるが、その評価は森林生態系への窒素のインプットとアウトプットを長期間モニタリングすることによって評価されてきた。本研究によってコナラの葉における一次代謝産物や二次代謝産物が、土壌の窒素利用性の違いを反映することが明らかになった。それによって、森林の窒素飽和の進行状況をより簡便に評価できる指標を入手できたと考えられる。
|
Report
(4 results)
Research Products
(15 results)
-
-
-
-
-
-
-
[Presentation] Nitrate contamination of mountainous headwater streams from adjacent agricultural and pasture lands beyond the watershed boundary in eastern Hokkaido, Japan2020
Author(s)
Fukushima, K., Iwasaki, K., Sakai, M., Oda, Y., Onishi, Y., Koba, K., Katata, G., Yamaguchi, T., Kubota, T., Nagano, H., Watanabe, M., Koarashi, J.
Organizer
JpGU-AGU Joint Meeting 2020: Virtual
Related Report
-
-
-
-
-
-
-
-
[Book] 木本植物の生理生態2020
Author(s)
小池 孝良、北尾 光俊、市栄 智明、渡辺 誠
Total Pages
264
Publisher
共立出版
ISBN
9784320058125
Related Report
