广西石山灌木生物量估算模型的建立

根据广西全区森林资源分布特点，在桂林、百色、柳州、河池等7市的22个县设置2m×2m的石山灌木样方62个，调查灌木优势种名、株数、平均高、平均地径和平均盖度，采用全部收获法分别获取枝、干、叶、根鲜重。选择地径和高2个因子与各器官生物量拟合，分别建立生物量模型，认为用该模型估算不同地区石山灌木生物量是科学、可行的。

Estimation Models of Shrub Biomass in Karst Area of Guangxi

According to forest resources distribution characteristics of the Guangxi autonomous region, 62 shrub quadrats by 2m × 2m were set in 22 counties of Guilin including seven cities of Baise, Liuzhou, Hechi, this study investigated dominant species list of shrubs, number of trees, average high, average ground diameter and average coverage of shrubs, meanwhile, obtained fresh weight of branch, stem, leaf, root by using harvest method. Selecting two factors of ground diameter and high to match with each organ biomass, biomass models were established, and taking this model to estimate shrub biomass in different karst areas, could get scientific and feasible results.