Application of Hydrogen Peroxide as an Environmental Stress Indicator for Vegetation Management

适应性植被管理非常耗时,其需要长时间的野外监测以获取可靠的数据。目前适应性植被管理手段虽已被广泛应用,但在进行栖息地状况评估时,仍然依赖于长时间的野外观测。目前的植被相关研究中,活性氧类(ROS)已经被视为一种环境胁迫指标。在这些ROS中,过氧化氢(H_2O_2)相对稳定,并且可以被准确、方便地量化。植物中H_2O_2含量可以被用作岸生和水生植被管理过程的胁迫指标,同时可以用来评估栖息地中单一植物物种的生长状况。本研究证明了植被管理中应用H_2O_2作为定量化环境胁迫指标的可行性。在实验室和野外(日本的真嗣湖、沙巴河、伊诺河和海河)条件下,分别开展了不同胁迫程度下大型水生植物和岸生植物生成H_2O_2情况的研究,结果表明H_2O_2可以作为环境管理中的胁迫指标。

Adaptive vegetation management is time-consuming and requires long-term colony monitoring to obtain reliable results. Although vegetation management has been widely adopted, the only method existing at present for evaluating the habitat conditions under management involves observations over a long period of time. The presence of reactive oxygen species （ROS） has long been used as an indicator of environmen- tal stress in plants, and has recently been intensely studied. Among such ROS, hydrogen peroxide （H202） is relatively stable, and can be conveniently and accurately quantified. Thus, the quantification of plant H202 could be applied as a stress indicator for riparian and aquatic vegetation management approaches while evaluating the conditions of a plant species within a habitat. This study presents an approach for elucidating the applicability of H202 as a quantitative indicator of environmental stresses on plants, particularly for vegetation management. Submerged macrophytes and riparian species were studied under laboratory and field conditions （Lake Shinji, Saba River, Eno River, and Hii River in Japan） for H202 formation under various stress conditions. The results suggest that H202 can be conveniently applied as a stress indicator in environmental management.