论文部分内容阅读
组成长白山阔叶红松林的主要树种红松、云杉、落叶松、大青杨、白桦、椴树、水曲柳和色木的幼树,盆栽于模拟自然光照和人工调节CO2浓度为700祄olmol-1、400祄olmol-1的气室内两个生长季(1998-1999),以生长在400祄olmol-1下的幼树为对照组。研究结果表明:高CO2浓度下生长的红松、云杉、落叶松、大青杨、白桦、椴树、水曲柳和色木的高生长比对照组的幼树提高10%~40%。水分利用效率均有不同程度的提高,但不同树种叶绿素含量和蒸腾速率对高CO2浓度反应不一。长期高CO2浓度环境下生长的阔叶树对大气CO2浓度升高反应较针叶树敏感,供试8个树种对CO2浓度的升高均发生光合驯化现象。图2表2参24。
The main tree species of Korean pine, spruce, larch, poplar, birch, lime tree, ash and color wood in Changbai Mountain broadleaved Korean pine forest were potted under simulated natural light and artificially adjusted CO2 concentration of 700 祄The two growth seasons (1998-1999) in the gas chamber of olmol-1,400 μmol-1 were compared with the saplings grown at 400 μmol-1. The results showed that the height growth of Korean pine, spruce, larch, Populus davidiana, Betula platyphylla, Linden, Fraxinus mandshurica and Chromosome increased by 10% -40% compared with that of the control. Water use efficiency all increased to some extent, but different tree species chlorophyll content and transpiration rate had different responses to high CO2 concentration. The broad-leaved tree that grew under long-term high CO2 concentration was more sensitive to the increase of atmospheric CO2 concentration than the coniferous tree. The photosynthesis and acclimatization of 8 tree species for the increase of CO2 concentration occurred. Figure 2 Table 2 Reference 24.