2013年の結実状況による山形版ブナ豊凶予測手法の検証
The evaluation of the forecasting method of beech crop in Yamagata based on seed production in 2013

Hiromasa Koyama, Makoto Sato, Haruna Higashizawa
2014 Tohoku Shinrin Kagakkaishi  
〔 )us year ( in order to escape from naturaL enemy ), Since fiower productjon and predator activity may depend on climatic ellvironments , the values of these two conditions cannot be equal at all 〔 〕 ther stunds in Japan . In Yamagata prefecture, for example , it has been recently pointed out that more than 350 flowers , ' wou ⊥ d be cnough fQr a good seed crop ( 90− 350 fQr medhlm crQp and < 9〔 }for bad crQp ). In 2013 , seed productbn shQwe 〔 Harge varlation among l6 stands in Yamagata
more » ... s in Yamagata prefecture. Thus , i しseemed tQ be a suitable year to vcrify the proposed conditions , Seed trap census revealed that the proposed conditions cQu [ d predict the crQp at each of stand with high percentage of accuracy . Thus forecasting methods which may contribute to reforestation or wildlife management can be establlshed for beech stands in Yamagata.
doi:10.18982/tjfs.19.2_37 fatcat:ltmylpa66rhdvbitrc3e5d3oie