论文部分内容阅读
探讨喀斯特森林优势种叶片构建成本特征可为优势种对喀斯特环境的适应与生存策略、喀斯特退化生态系统植被恢复与重建研究提供理论依据。本研究分析了贵州喀斯特森林34个优势种叶片构建成本(CC),讨论了其与叶片比叶面积、糖类、水溶性酚、脂类、蛋白质、木质素、矿物质和有机酸含量之间的关系。结果表明:1)喀斯特地区植物叶片CC为1.37±0.05g glucose/g DW,显著低于非喀斯特地区(p<0.05);2)叶片中有机酸和矿物质含量与叶片CC负相关,可能与植物适应喀斯特地区高碱环境策略有关;3)纸质叶和落叶有机酸和蛋白质含量分别显著高于革质叶和常绿叶,前者CC低于后者,纸质叶和落叶物种更加有利于喀斯特地区植被恢复;4)植物对钙的适应程度越高,叶片CC越低,嗜钙、喜钙植物对喀斯特地区植被恢复具有潜在重要意义。
To explore the cost characteristics of the dominant species of karst forest can provide theoretical basis for adaptation and survival strategies of dominant species to karst environment and vegetation restoration and reconstruction of karst degraded ecosystems. This study analyzed the leaf building cost (CC) of 34 dominant species in Karst forests of Guizhou Province, and discussed the relationship between leaf area and specific leaf area, carbohydrate, water soluble phenol, lipid, protein, lignin, minerals and organic acids Relationship. The results showed that: 1) The CC of plant leaves in karst area was 1.37 ± 0.05g glucose / g DW, which was significantly lower than that of non-karst area (p <0.05); 2) The contents of organic acids and minerals in leaves were negatively correlated with CC, Plant adapted to high-alkali environment strategy in karst area; 3) organic acid and protein content of paper leaves and leaves were significantly higher than that of leather leaves and evergreen leaves, CC was lower than the former, paper leaves and deciduous species were more favorable to karst Regional vegetation restoration; 4) the higher the degree of plant adaptability to calcium, the lower the leaf CC, the phytolith, hi calcium plants in the karst region of vegetation restoration has potential significance.