Forecasting a poor crop in two years later of beech (Fagus crenata) stand by winter bud investigation
-
- Koyama Hiromasa
- Faculty of Agri. Yamagata Univ.
-
- Yasaka Michiyasu
- Hokkaido For. Res. Inst.
-
- Terazawa Kazuhiko
- Hokkaido For. Res. Inst.
-
- Kon Hirokazu
- Hokkaido For. Res. Inst.
Bibliographic Information
- Other Title
-
- 冬芽調査によりブナ林の2年後の凶作を予測する手法
- トウガ チョウサ ニ ヨリ ブナリン ノ 2ネンゴ ノ キョウサク オ ヨソクスル シュホウ
Search this article
Abstract
Previous researches have been revealed that, in beech (Fagus crenata) forests, bad crop year likely to occur due to heavy insect attack when flower density in current year is not more than 10 times as much as those of the previous years. Thus, if the maximum flower density (Fmax) which is constant for all beech stands exists, a hypothesis can be proposed i.e. when female flower production reach up to more than 1/10 of Fmax in current year, the next year must result in a bad crop year. This suggests that we can predict the seed crop of two years later. Literature and field surveillance study investigating maximum flower and seed production in each of 25 beech forest suggested that Fmax should be 1200/m^2. Additionally, when 120 (Fmax1/10) flowers were produced, the next year tends to result in a bad crop year with high probability. This indicates that we can predict bad crop of two year later by winter bud examination, which enable us to plan more effectual forest restoration by natural regeneration or planting operation.
Journal
-
- Japanese Journal of Forest Environment
-
Japanese Journal of Forest Environment 49 (1), 35-40, 2007
The Japanese Society of Forest Environment
- Tweet
Details 詳細情報について
-
- CRID
- 1390282679189614336
-
- NII Article ID
- 110006976765
-
- NII Book ID
- AN00124077
-
- ISSN
- 21896275
- 03888673
-
- NDL BIB ID
- 8906535
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- NDL
- CiNii Articles
- KAKEN
-
- Abstract License Flag
- Disallowed