低价值林是制约我国林业高效可持续发展的关键问题 ,而解决低价值林问题的关键是如何尽早发现及有效预防低价值林的形成。从树木抗逆性角度分析低产林表现症状及成因 ,为低价值林的早期诊断与预防提供新的研究角度。另外 ,在树木抗逆性调控过程中 ,抗坏血酸的氧化还原是一个比SOD活性更重要的调节位点 ,阐明抗坏血酸代谢在调节树木抗逆性中的核心作用 ,可为与低价值林有关的分子生物学、基因工程研究指明方向。 The low-value forest is the key issue which restricts the efficient and sustainable development of forestry in our country. The key to solve the problem of low-value forest is to find and prevent the formation of low-value forest as soon as possible. Analysis of low-yield stands from the perspective of tree resilience and their causes, provide a new perspective for the early diagnosis and prevention of low-value forests. In addition, ascorbate redox is a more important regulatory site than SOD activity in the process of stress resistance of trees, and elucidates that ascorbate metabolism plays a central role in regulating tree stress resistance and may be a molecule involved in low-value forest Biology, genetic engineering research indicate the direction.