Physiological Method for Evaluation of Vigor State of Pine Stands
スポンサーリンク
概要
- 論文の詳細を見る
Vigor state of middle-aged pine stands was estimated during 2002-2008 at permanent sample plots by two methods: 1) visual estimation of stand vigor rank according to the 6-point scale of Forest Regulations of RF and 2) method of induction of tree defense response (injection of stem with high molecular extractives from Ceratocystis laricicola mycelium and registration of parameters of stem phloem necrosis). The stands of similar origin and structure were preliminarily divided into background and polluted ones on the basis of different amount of polluting substances in snow cover. Estimation of external tree signs according to 6-point scale didn't reveal significant differences between stands in monitored period. In contrast to this morphological method parameters of specific necrotic response of stem inner bark to fungal extract differed significantly in background and polluted stands. Parameters of the necrotic spots on the phloem were shown to depend on effect of creeping fire. The necrosis size increased and the necrosis "moved" toward crown during two years after the fire. The results are in accordance with the hypothesis that the size of phloem necrosis induced by the effect of extractives from phytopathogenic fungus mycelium on stem vascular tissues was determined by the tree state - it increased in damaged tree and decreased with tree state improvement. The injection method can inform about changes of physiological condition of tree and stand at the latent stage when exterior characteristics of a tree haven't changed yet.
論文 | ランダム
- 食品スーパー--あくまでローカルスーパーが主役の全国マップ 北海道と九州では業界再編の動きが活発 (新入社員特集第1弾 35分14秒で読める!! よくわかる 8大小売業態全勢力図)
- 総合スーパー--外資系企業はまだまだ「日本勉強中」 イオン・ヨーカ堂二横綱の大相撲続く (新入社員特集第1弾 35分14秒で読める!! よくわかる 8大小売業態全勢力図)
- ウェルカム新入社員特集 2003年のキーワード25を一挙つるべ打ち どこから読んでも即「事情通」! よくわかる!商業界「話題」事典
- 話題のSC実力診断 イオン品川 シーサイドショッピングセンター--都心進出を狙うイオンの実験店だが、目新しさが不足、都心対応は道半ばか
- プラント2上中店(福井・上中町 スーパーセンター) 日本版ウォルマートを標榜する実用生活総合ストアの顧客吸引力 (総力特集 「ローカルの王様」強さの秘密 徹底研究--わが町の商業を制圧する圧倒的ナンバーワンの実態に迫る) -- (第2部 メガストア編--1店の巨大店舗で広域商圏を制圧)