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青冈 ( Quercus glauca)林乔木层主要树种叶片的净光合速率日进程在春夏季晴天均有明显午休。常绿树种的光合速率在秋季最高 ,大量换叶期最低 ,冬季仍有一定的净光合量。落叶树种的光合速率和光合产量低于常绿树种 ,随着群落的发育其地位将降低。青冈和石栎 ( L ithocarpusglaber)的光合速率接近 ,但青冈能够利用较弱的光 ,因而其高叶量的树冠具有较高的光合总量 ,以保持其在群落中的优势种地位 ;石栎主要利用较强的光 ,其较低叶量的树冠可以维持较高的光合总量 ,以保证其次优势种地位。灌木、草本层种类光合日进程均为单峰型。灌木种类对光的需求较高。蕨类植物耐荫强 ,因而在林中能占有稳定的伴生地位。
The net photosynthetic rate diurnal course of the leaves of the major tree species of the tree layer of the Cyclobalanopsis glauca forest was significantly delayed during the spring and summer sunny days. The photosynthetic rate of evergreen species was the highest in autumn, with the lowest number of leaf replacements and the net photosynthetic rate in winter. The photosynthetic rate and photosynthetic rate of deciduous trees were lower than those of evergreen species, and their status would decrease with the development of community. Cyclobalanopsis glaucoma and Lithocarpus glaber (L ithocarpusglaber) photosynthetic rate is close, but Cyclobalanopsis can use weaker light, so its high leaf volume crown has a higher total photosynthetic rate, in order to maintain its dominant species in the community; The main use of strong light, the lower leaf canopy crown to maintain a high total amount of photosynthesis in order to ensure the next dominant species status. Shrubs, herb layer types photosynthetic daily process are unimodal. Shrub species have a higher demand for light. Ferns shade-resistant, and thus can occupy a stable forest associated status.