探讨了将透光率为5%、15%、25%的西畴青冈幼苗光照改为透光率40%的处理条件下，西畴青冈叶绿素含量及比值、净光合速率、叶绿素荧光参数fv/fm随时间的变化。结果表明：随光照强度增加，叶绿素a、叶绿素b、叶绿素a+b的含量降低，叶绿素a/b、类胡萝卜素含量、类胡萝卜素/a+b的值增加。净光合速率（Pn）和叶绿素荧光参数fv/fm先下降后上升。说明西畴青冈幼苗在光照增强的情况下,会通过减少叶绿素含量来减少对光的吸收，提高类胡萝卜素的含量以便于保护叶绿素和耗散多余的光能，净光合速率（Pn）和叶绿素荧光参数fv/fm的变化表明西畴青冈幼苗在光强增加时会受光抑制使净光合速率（Pn）降低，而随着处理时间的增强，净光合速率（Pn）会有一定恢复。在光强增加情况下，西畴青冈能进行自身的调节，以便于适应光环境变化。 Discussed transmittance 5%, 15%, 25% of the west and then cyclobalanopsis seedlings instead of light transmittance 40% with conditions, the ratio of quercus chlorophyll content and dependence, net photosynthetic rate, chlorophyll fluorescence parameter fv/FM changing with time. Results: with the light intensity increases, chlorophyll-a, chlorophyll b, chlorophyll-a + b, the content of chlorophyll a/b, carotenoids content, carotenoids/a + b increased value. The net photosynthetic rate (Pn) and fv/FM chlorophyll fluorescence parameters was rising. Explain the dependence on enhancement of quercus seedlings illumination circumstance, by recing the chlorophyll content will rece the absorption, improve carotenoids in order to protect the content of chlorophyll and energy dissipation of rendant, net photosynthetic rate (Pn) and fv/FM chlorophyll fluorescence parameters of the change that the dependence on light intensity increases quercus seedlings will suffer photoinhibition make net photosynthetic rate (Pn) is reced, and the processing time, increase with the net photosynthetic rate (Pn) can be restored. In the light intensity increases circumstances, then can make the quercus adjustment, the light in order to adapt to the environment.
探讨了将透光率为5%、15%、25%的西畴青冈幼苗光照改为透光率40%的处理条件下，西畴青冈叶绿素含量及比值、净光合速率、叶绿素荧光参数fv/fm随时间的变化。结果表明：随光照强度增加，叶绿素a、叶绿素b、叶绿素a+b的含量降低，叶绿素a/b、类胡萝卜素含量、类胡萝卜素/a+b的值增加。净光合速率（Pn）和叶绿素荧光参数fv/fm先下降后上升。说明西畴青冈幼苗在光照增强的情况下,会通过减少叶绿素含量来减少对光的吸收，提高类胡萝卜素的含量以便于保护叶绿素和耗散多余的光能，净光合速率（Pn）和叶绿素荧光参数fv/fm的变化表明西畴青冈幼苗在光强增加时会受光抑制使净光合速率（Pn）降低，而随着处理时间的增强，净光合速率（Pn）会有一定恢复。在光强增加情况下，西畴青冈能进行自身的调节，以便于适应光环境变化。Of the transmission rate of 5%, 15%, 25% of the seedlings Cyclobalanopsis Xichou light transmittance changed to 40% of the processing conditions, Cyclobalanopsis Xichou chlorophyll content and the ratio of net photosynthetic rate, chlorophyll fluorescence parameters fv / fm change over time. The results showed that: With the increase in light intensity, chlorophyll a, chlorophyll b, chlorophyll a + b content decreased chlorophyll a / b, carotenoid content, carotenoid / a + b to increase the value. Net photosynthetic rate (Pn) and chlorophyll fluorescence parameters fv / fm first increase after a decline. Description Xichou Cyclobalanopsis enhanced seedlings in light cases, by recing the chlorophyll content in order to rece light absorption and improve the content of carotenoids in order to facilitate the protection of chlorophyll and the dissipation of excess light energy, the net photosynthetic rate (Pn) and chlorophyll fluorescence fv / fm Xichou changes show that the seedlings Cyclobalanopsis increase in light intensity will be affected by photoinhibition net photosynthetic rate (Pn) decreased, while the processing time with the increase of net photosynthetic rate (Pn) there will be certain to resume. Increase in light intensity, the Xichou Cyclobalanopsis can adjust itself in order to adapt to changing light environment.
The Xi Chou county Qing Gang county young seedling illumination having discussed with transmitting rate for 5% , 15% , 25% switches over to be under transmitting rate 40%'s treatment condition , Xi Chou county Qing Gang county chlorophyll contents and ratio, close the rate , the chlorophyll fluorescence parameter fv/fm change with time nothing but only. Result is indicated: The intensity increases by , the chlorophyll a , chlorophyll b , chlorophyll a + b contents rece with illumination, chlorophyll a/b , carotenoid contents , carotenoid/ a + b value increase by. Nothing but brightness closes the rate (Pn) with chlorophyll fluorescence parameter fv/fm rises after coming down first. Sorption that can cut down camera setting by cutting down a chlorophyll coming contents, improves the carotenoid contents to easy to protect a chlorophyll and to dissipate unnecessary optical energy , that nothing but brightness closes the rate (Pn) with chlorophyll fluorescence parameter fv/fm change indicates the Xi Chou county Qing Gang county young seedling may be glorified restraint ring the period of the light intensity increases by makes nothing but brightness close rate (Pn) lessening , that nothing but brightness closes the rate (Pn) is able to have being bound to recover but with treatment time strengthening under condition strengthening in illumination explaining the Xi Chou county Qing Gang county young seedling. Under the light intensity increases by situation, Xi Chou county Qing Gang county can carry out self's adjustment , change with easy to fit in with up environment.
Discussed transmittance 5%, 15%, 25% of the west and then cyclobalanopsis seedlings instead of light transmittance 40% with conditions, the ratio of quercus chlorophyll content and dependence, net photosynthetic rate, chlorophyll fluorescence parameter fv/FM changing with time. Results: with the light intensity increases, chlorophyll-a, chlorophyll b, chlorophyll-a + b, the content of chlorophyll a/b, carotenoids content, carotenoids/a + b increased value. The net photosynthetic rate (Pn) and fv/FM chlorophyll fluorescence parameters was rising. Explain the dependence on enhancement of quercus seedlings illumination circumstance, by recing the chlorophyll content will rece the absorption, improve carotenoids in order to protect the content of chlorophyll and energy dissipation of rendant, net photosynthetic rate (Pn) and fv/FM chlorophyll fluorescence parameters of the change that the dependence on light intensity increases quercus seedlings will suffer photoinhibition make net photosynthetic rate (Pn) is reced, and the processing time, increase with the net photosynthetic rate (Pn) can be restored. In the light intensity increases circumstances, then can make the quercus adjustment, the light in order to adapt to the environment.
Of the transmission rate of 5%, 15%, 25% of the seedlings Cyclobalanopsis Xichou light transmittance changed to 40% of the processing conditions, Cyclobalanopsis Xichou chlorophyll content and the ratio of net photosynthetic rate, chlorophyll fluorescence parameters fv / fm change over time. The results showed that: With the increase in light intensity, chlorophyll a, chlorophyll b, chlorophyll a + b content decreased chlorophyll a / b, carotenoid content, carotenoid / a + b to increase the value. Net photosynthetic rate (Pn) and chlorophyll fluorescence parameters fv / fm first increase after a decline. Description Xichou Cyclobalanopsis enhanced seedlings in light cases, by recing the chlorophyll content in order to rece light absorption and improve the content of carotenoids in order to facilitate the protection of chlorophyll and the dissipation of excess light energy, the net photosynthetic rate (Pn) and chlorophyll fluorescence fv / fm Xichou changes show that the seedlings Cyclobalanopsis increase in light intensity will be affected by photoinhibition net photosynthetic rate (Pn) decreased, while the processing time with the increase of net photosynthetic rate (Pn) there will be certain to resume. Increase in light intensity, the Xichou Cyclobalanopsis can adjust itself in order to adapt to changing light environment.
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