为了解遵义市成熟林森林质量状况,以贵州省第四次森林资源规划设计调查数据为基础,对遵义市成熟林小班数据进行整理分析,选取平均胸径、平均树高、公顷蓄积、树种结构、郁闭度、植被综合盖度、坡度、土层厚度等8个评价指标建立质量评价体系,构建森林质量评价物元模型,首次对遵义市森林质量进行评价。通过对质量评价结果进行总结分析,得出遵义市成熟林质量“差、中等、良好、优秀”各等级面积占比分别为1.56%,45.72%,45.87%,6.85%。各区县中,余庆、凤冈、播州等地质量相对较好,中等以上水平的成熟林面积占比高达60%以上。从森林类别来看,商品林森林质量最好,其次为地方公益林。总体而言,遵义市成熟林质量大多处于“中等、良好”两个等级,而处于“优秀”的森林面积较少,仅占成熟林总面积的6.85%。结果表明,遵义市成熟林质量提升空间较大,在今后的经营实践中,可制定科学合理的经营措施来提高森林质量,以此促进森林质量精准提升。

To understand the quality of mature forest of Zunyi,Southwest China's Guizhou Province,this paper chooses data of the fourth forest resource planning and design survey in the province,tries to organize and analyze the small-class data of the city.It selects average DBH,average tree height,hectare volume,tree species structure,canopy density,comprehensive vegetation coverage,slope and soil layer thickness to establish the quality evaluation system,construct the matter-element model for forest quality evaluation and evaluate the forest quality of Zunyi for the first time.By summarizing and analyzing the results of quality evaluation,the study concludes that the area proportion of "poor,medium,good and excellent" grade of mature forest quality in Zunyi was 1.56%,45.72%,45.87% and 6.85%,respectively.Forest quality of Yuqing,Fenggang,Bozhou are relatively better among districts and counties as their mature forest area above medium level is as high as 60%.From the perspective of forest category,the quality of commercial forest is the best,followed by local public welfare forest.In general,the quality of mature forests in Zunyi is mainly in "medium" and "good" level,with only 6.85% of "excellent" level.The results show that there is a large space scope for the improvement of the quality of mature forest in Zunyi.Scientific and reasonable management measures can be formulated to improve the forest quality in the future management practice,so as to improve the forest quality.