桤木×杉木混交林生物量及分布格局研究

为解决目前南方林区人工林针叶化引起的系列生态问题,发展阔叶树种造林,应用平均标准木法和样方收获法对桤木×杉木混交林各模式林分的生物量、分配比例及分布格局进行研究,结果表明:不同经营模式的林分的生物量及生产力由高到低为:行间混交、行带混交、株间混交、杉木纯林,以行间混交的乔木层生物量及生产力最高,分别为68.66(t/hm2)和6.86(t/hm·2a);混交林各经营模式的营养空间分布均比杉木纯林合理,能较好地促进林木生长。

Stand Biomass and Its Distribution of Mixed Forests of Alnus cremastogyne and Cunninghamia lanceolata

To address the current south plantation coniferous forest areas of ecological problems arising from the series, the development of broad-leaved species reforestation, the average standard of law and wood-like side of alder wood harvest of the mixed pattern of forest biomass, and the ratio and pattern of distribution were studied. The results show that: different business models of the forest biomass and productivity between the lines, mixed> trip with mixed> were mixed inter-> Chinese fir pure forest, betwe...