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应用森林生态系统管理与预测模型 (FORTOON)对连栽杉木人工林不同经营措施进行模拟。通过对结果的对比分析表明 ,三代连栽的杉木林在生物量和立地质量方面呈逐代下降的趋势 ;选用下层疏伐法对林分生长较有利 ;施用有机肥效果明显 ,可以迅速提高林地有效养分含量和林分生物量 ;清除枯落物会明显降低林分生物量。模拟结果与实际情况比较相符 ,证明了模型的有效性 ,可作为进一步模拟研究的基础 ,以便得到一个最佳的经营方案 ,为防止杉木林产量下降和地力衰退提供可选方案
Application of Forest Ecosystem Management and Prediction Model (FORTOON) to simulate different management practices of continuous plantation of Chinese fir plantation. The results of comparative analysis showed that the three generations of continuous planting Cunninghamia lanceolata showed a gradual decline in biomass and site quality trends; the choice of the lower layer thinning method is more favorable for the growth of the forest; the application of organic fertilizer is obvious, you can quickly increase the woodland Effective nutrient content and stand biomass; clearing litter significantly reduced stand biomass. The simulation results are in good agreement with the actual situation, which proves the validity of the model and can be used as the basis for further simulation studies in order to obtain an optimal management plan and provide alternatives for preventing the decline of Chinese fir plantation and soil erosion