摘要
马尾松林是我国华南地区最主要的森林植被类型。为了寻求科学合理的马尾松林利用方式，我们运用Century模型对马尾松林在不同管理措施下包括在严格保护措施下的演替各阶段的土壤有机质、N含量以及生产力进行了模拟预测。结果表明，除去地被物和林下层植物会使土壤肥力降低，导致生产力下降。除去的生物量越多，生产力降低的幅度越大。因此，此种利用方式不符合持续发展的要求，建议予以改变。应用Century模型对鼎湖山森林各演替阶段的生产力进行模拟的结果，证明Century模型可用于森林演替的模拟。
Century models are based on the soil texture and ecosystem functions in which the cycling of C and N are the key factors. A Century model was used to simulate and predict forest ecosystem functions, such as productivity,nutrient dynamics within the Dinghushan Biosphere Reserve. The results indicate that litter removal and shrub cutting affect biogeochemical cycling, reduce soil nutrients and lead to a decrease in long-term forest productivity. The model showed that as tnore biomass was removed, production continuously decreased. We conclude therefore, that it is necessary to stop or reduce biomass removal practices in order to maintain high productivity and improve sustainability in these forests.
出处
《植物生态学报》
CAS
CSCD
北大核心
2000年第2期175-179,共5页
Chinese Journal of Plant Ecology
基金
中国科学院"九.五"重大项目!KZ951-04-02
KZ95T-04-02
关键词
Century模型
森林生产力
鼎湖山
管理措施
Century model, Productivity, Dinghushan Biosphere Reserve, Management action
