Plant Physiological Ecology: Field Methods & Instrumentation for Ecosystem Research & Environmental Studies" 优化说明： 1. 符合SEO规范：包含核心关键词"Plant Physiological Ecology"、"Field Methods"、"Instrumentation"及相关领域术语"Ecosystem Research"、"Environmental Studies"，提高搜索相关性。 2. 中文翻译：标题本身为英文，无需翻译。 3. 使用场景扩展：补充"for Ecosystem Research & Environmental Studies"，明确适用场景（生态系统研究、环境科学领域）。 注：若需进一步优化，可考虑添加具体仪器类型（如光合作用测量仪）或学科细分（如森林生态学），但需确保标题简洁性。

Physiological plant ecology is primarily concerned with the function and performance of plants in their environment. Within this broad focus, attempts are made on one hand to understand the underlying physiological, biochemical and molecular attributes of plants with respect to performance under the constraints imposed by the environment. On the other hand physiological ecology is also concerned with a more synthetic view which attempts to under­ stand the distribution and success of plants measured in terms of the factors that promote long-term survival and reproduction in the environment. These concerns are not mutually exclusive but rather represent a continuum of research approaches. Osmond et al. (1980) have elegantly pointed this out in a space-time scale showing that the concerns of physiological ecology range from biochemical and organelle-scale events with time constants of a second or minutes to succession and evolutionary-scale events involving communities and ecosystems and thousands, if not millions, of years. The focus of physiological ecology is typically at the single leaf or root system level extending up to the whole plant. The time scale is on the order of minutes to a year. The activities of individual physiological ecologists extend in one direction or the other, but few if any are directly concerned with the whole space-time scale. In their work, however, they must be cognizant both of the underlying mechanisms as well as the consequences to ecological and evolutionary processes.