论文部分内容阅读
在长白山地区以红皮云杉、樟子松为材料，研究其冬季光合能力的变化，探讨了除红松外的其它针叶树是否在冬季也存在光合抑制以及遮荫是否可减轻抑制等问题．结果表明，红皮云杉、樟子松有与红松相似的冬季光会抑制，但程度较轻；遮荫对减轻光合抑制非常有效．可以推测，在长白山地区或冬季气候与之相似的地区，常绿针叶树在冬季均可能表现光合抑制，遭受冬季光氧化伤害，并且其释放的ＣＯ２（光越强，释放量越大）是空气中ＣＯ２含量增加的原因之一．
In the area of Changbai Mountain, the changes of photosynthetic capacity of Picea koraiensis and Pinus sylvestris var. Mongolica were studied in winter, and whether the coniferous trees except for Korean pine also had photosynthetic depression in winter and whether the shade could be reduced or not. The results showed that the red light spruce and Pinus sylvestris var. Mongolica had the same inhibitory effect as the Korean pine, but the light degree was less; the shade was very effective in alleviating the inhibition of photosynthesis. It can be speculated that evergreen coniferous trees may show photosynthetic depression in winter and light-induced oxidative damage in winter in areas like Changbai Mountain or similar to winter climates, and the release of CO2 (the stronger the light is, the greater the release) is in the air One of the reasons for the increase in CO2 content.