Study on the relationship between Toona sinensis Roem stand productivity and site conditions in Sichuan Basin

According to the relationship between Toona sinensis Roem stand volume,productivity and forest age,site conditions,stand density and other factors,through selecting 8 representative cities or counties,using standard investigation and stem analysis method,this paper makes relatively systematic research about the Toona sinensis Roem plantation accumulation,productivity,and the relationship between them and site conditions.Through comparative analysis indicators of multiple site conditions,this paper expects to give a more comprehensive picture about the source of accumulation and productivity difference.

山东阳谷景阳冈及其书迹

中国古典名著《水浒传》记载着一个家喻户晓的英雄故事——“景阳冈武松打虎”。元明之后几百年间妇孺皆知。故事的发详地“景阳冈”也以其独特的文化渊源和壮观的自然景色而驰名中外。景阳冈,位于山东省阳谷县城东十六公里处,东临京杭大运河,南于水泊梁山隔黄河而相望,这里冈峦起伏,林木成阴,古柏参天,荆棘丛生,莽草无涯。每于林密草丛中掩映着多处历史悠久的名胜古迹。