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利用红锥(Castanopsis hystrix)、火力楠(Michelia macclurel)、黎蒴(Castanopsis fissa)、山杜英(Elaeocarpussylvestris)和樟树(Cinnamomum camphora)对杉木林进行改造,从2008年4月到2009年4月,对5种改造林分的土壤养分动态进行研究。结果表明,各林分的土壤pH值变化范围为4.3～5.1,属强酸性土壤,一般呈现下降后上升的趋势。红锥林0～20 cm和20～40 cm土层、火力楠林、黎蒴林和山杜英林0～20 cm土层的碱解氮含量下降后上升,其他均为下降、上升后下降。土壤速效磷含量夏季(7月)较高,秋季(10月)较低。土壤有效钾呈现下降后上升的趋势。5个林分的土壤速效养分含量均为0～20 cm土层高于20～40 cm土层。
Castanopsis hystrix, Michelia macclurel, Castanopsis fissa, Elaeocarpussylvestris and Cinnamomum camphora were used to transform Chinese fir plantations. From April 2008 to April 2009, Study on Soil Nutrient Dynamics of Five Reformed Forest Stands. The results showed that the soil pH values varied from 4.3 to 5.1 in each stand, which belonged to strongly acidic soils and generally showed a trend of decreasing and then increasing. In 0-20 cm and 20-40 cm layers of red coniferous forest, the contents of available nitrogen in 0 ~ 20 cm soil layer in Nanling, Li bolt-shaped forest and Shan-Du Yinglin decreased and then increased, while others decreased, then decreased. Soil available phosphorus content was higher in summer (July) and lower in autumn (October). Soil available potassium showed a downward trend and then increased. The soil available nutrient contents of 5 stands were all higher than 0 ~ 20 cm soil layer in 20 ~ 40 cm soil layer.