不同生境下木荷光合生理生态特性.rar
不同生境下木荷光合生理生态特性,1.3万字13页包括开题报告，封面，完整论文，外文翻译，文献综述，答辩提纲等资料摘要：运用lca4 型便携式全自动光合测定系统，在自然条件下，于9月上旬的晴天里分别对林窗、林缘和林下3 种生境的木荷光合生理生态特性进行了研究。结果表明：林窗木荷光合速率日变化呈双峰型，有明显的“午休”现象，...
该文档为压缩文件,包含的文件列表如下:
内容介绍
原文档由会员 wamama 发布
不同生境下木荷光合生理生态特性
1.3万字 13页
包括开题报告，封面，完整论文，外文翻译，文献综述，答辩提纲等资料
摘要：运用LCA4 型便携式全自动光合测定系统，在自然条件下，于9月上旬的晴天里分别对林窗、林缘和林下3 种生境的木荷光合生理生态特性进行了研究。结果表明：林窗木荷光合速率日变化呈双峰型，有明显的“午休”现象，林缘木荷呈单峰型，没有明显的午休现象，林下木荷净光合速率在一天的大部分时间里变化不大。林下生境木荷的暗呼吸速率、胞间CO2浓度和气孔阻力均显著低于林缘和林窗生境，而林缘与林窗生境之间差异不显著。３种生境木荷的光响应曲线具有相同的变化规律，用一元二次方程能进行较好的拟合。不同生境下及同一生境中不同时间点木荷的光合参数均表现出了与环境相适应的变异趋势。
关键词：木荷；不同生境；日变化；光响应；CO2响应
Photosynthetic ecophysiological characteristics of Schima superba at different habitats
Abstract: The photosynthetic ecophysiological characteristics of Schima superba in three different habitats, i.e, canopy gap, forest edge and understory was studied by the LCA4 Portable Photosynthesis System under natural condition. The results were as follows: The curve of net photosynthetic rate(Pn) in canopy gap leaves had two peaks, which had an obvious decline of photosynthetic efficiency at noon, while it was only one peak in forest edge leaves, but Pn of understory leaves did not have great changes during the whole day. The mean value of daily photosynthetic parameters in the leaves of S. superba, such as internal CO2 concentration, stomatal resistance and dark respiration rate were differences at different habitats, the understory leaves were far below others, but there was not significant differences between canopy gap leaves and forest edge leaves. The curves of photoresponse had the same trends among three habitats, they could be better fit for quadratic equation with one unknown. Photosynthetic parameters of S.superba in different habitats at different time or in the same habitat at different time showed that S. superba has variation trends to adapt to the environment.
Key words: Schima superba; different habitats; diurnal variation; photoresponse; CO2 response
目 录
1．引言……………………………………………………………………………………1
2．材料与方法……………………………………………………………………………2
3. 结果与分析……………………………………………………………………………4
3.1 环境因子日变化 ………………………………………………………………………4
3.2 光合特性日变化 ………………………………………………………………………5
3.2.1 光合速率日变化 ……………………………………………………………………5
3.2.2 胞间CO2浓度日变化 ………………………………………………………………5
3.2.3 暗呼吸速率日变化 …………………………………………………………………5
3.2.4 气孔阻力日变化 ……………………………………………………………………5
3.3 不同生境木荷光合参数的变化 …………………………………………………………7
3.3.1 光响应 ………………………………………………………………………………7
3.3.2 CO2响应 ……………………………………………………………………………9
4. 讨论 ……………………………………………………………………………………9
5. 参考文献 ………………………………………………………………………………10
参考文献：
[16] Carter G, Smith W K. Microhabitat comparisons of transpiration and photosynthesis in three subalp ine conifers[J]. Can. J. B ot., 1988, 66: 963～969.
[17] Chazdon R L, Pearcy R W. Photosynthetic responses to light variation in rain forest species I. Introduction under constant and fluctuating light conditions[J]. Oecologia, 1986, 69: 517～523.
[18] Chazdon R L. Photosynthetic plasticity of two rain forest shrubs across natural gap transects[J]. Oecologia, 1992, 92:586～595.
[19] Nobel P S. Biophysical Plant Physiology and Ecology[M].United States of America :W. H. Freeman and Company SanFrancisco, 1983, 434～446.
[20] 郭晓云,杨允菲,李建东.松嫩平原不同旱地生境芦苇的光合特性研究[J ].草业学报, 2003, 12(3): 16～21.
[21] 金则新,柯世省.云锦杜鹃叶片光合作用日变化特征[J].植物研究,2004,24(4):447～452.
[22] 郭志华,张宏达,李志安,等.鹅掌楸(Liriodendron chinense)苗期光合特性研究[J].生态学报,1999,19(2):164～169.
[23] Berry J A, Downton W J S. Photosynthesis. Vol Ⅱ: Development, carbon metabolism and plant productivity [M ]. Academic Press, New York: 1982. 26～31.
[24] 金则新,柯世省.浙江天台山七子花群落主要植物种类的光合特性[J].生态学报,2002 ,22(10):1645～1652.
[25] 柯世省,金则新,陈贤田.浙江天台山七子花等6 种阔叶树光合生态特性[J].植物生态学报,2002,26(3):363～371.
1.3万字 13页
包括开题报告，封面，完整论文，外文翻译，文献综述，答辩提纲等资料
摘要：运用LCA4 型便携式全自动光合测定系统，在自然条件下，于9月上旬的晴天里分别对林窗、林缘和林下3 种生境的木荷光合生理生态特性进行了研究。结果表明：林窗木荷光合速率日变化呈双峰型，有明显的“午休”现象，林缘木荷呈单峰型，没有明显的午休现象，林下木荷净光合速率在一天的大部分时间里变化不大。林下生境木荷的暗呼吸速率、胞间CO2浓度和气孔阻力均显著低于林缘和林窗生境，而林缘与林窗生境之间差异不显著。３种生境木荷的光响应曲线具有相同的变化规律，用一元二次方程能进行较好的拟合。不同生境下及同一生境中不同时间点木荷的光合参数均表现出了与环境相适应的变异趋势。
关键词：木荷；不同生境；日变化；光响应；CO2响应
Photosynthetic ecophysiological characteristics of Schima superba at different habitats
Abstract: The photosynthetic ecophysiological characteristics of Schima superba in three different habitats, i.e, canopy gap, forest edge and understory was studied by the LCA4 Portable Photosynthesis System under natural condition. The results were as follows: The curve of net photosynthetic rate(Pn) in canopy gap leaves had two peaks, which had an obvious decline of photosynthetic efficiency at noon, while it was only one peak in forest edge leaves, but Pn of understory leaves did not have great changes during the whole day. The mean value of daily photosynthetic parameters in the leaves of S. superba, such as internal CO2 concentration, stomatal resistance and dark respiration rate were differences at different habitats, the understory leaves were far below others, but there was not significant differences between canopy gap leaves and forest edge leaves. The curves of photoresponse had the same trends among three habitats, they could be better fit for quadratic equation with one unknown. Photosynthetic parameters of S.superba in different habitats at different time or in the same habitat at different time showed that S. superba has variation trends to adapt to the environment.
Key words: Schima superba; different habitats; diurnal variation; photoresponse; CO2 response
目 录
1．引言……………………………………………………………………………………1
2．材料与方法……………………………………………………………………………2
3. 结果与分析……………………………………………………………………………4
3.1 环境因子日变化 ………………………………………………………………………4
3.2 光合特性日变化 ………………………………………………………………………5
3.2.1 光合速率日变化 ……………………………………………………………………5
3.2.2 胞间CO2浓度日变化 ………………………………………………………………5
3.2.3 暗呼吸速率日变化 …………………………………………………………………5
3.2.4 气孔阻力日变化 ……………………………………………………………………5
3.3 不同生境木荷光合参数的变化 …………………………………………………………7
3.3.1 光响应 ………………………………………………………………………………7
3.3.2 CO2响应 ……………………………………………………………………………9
4. 讨论 ……………………………………………………………………………………9
5. 参考文献 ………………………………………………………………………………10
参考文献：
[16] Carter G, Smith W K. Microhabitat comparisons of transpiration and photosynthesis in three subalp ine conifers[J]. Can. J. B ot., 1988, 66: 963～969.
[17] Chazdon R L, Pearcy R W. Photosynthetic responses to light variation in rain forest species I. Introduction under constant and fluctuating light conditions[J]. Oecologia, 1986, 69: 517～523.
[18] Chazdon R L. Photosynthetic plasticity of two rain forest shrubs across natural gap transects[J]. Oecologia, 1992, 92:586～595.
[19] Nobel P S. Biophysical Plant Physiology and Ecology[M].United States of America :W. H. Freeman and Company SanFrancisco, 1983, 434～446.
[20] 郭晓云,杨允菲,李建东.松嫩平原不同旱地生境芦苇的光合特性研究[J ].草业学报, 2003, 12(3): 16～21.
[21] 金则新,柯世省.云锦杜鹃叶片光合作用日变化特征[J].植物研究,2004,24(4):447～452.
[22] 郭志华,张宏达,李志安,等.鹅掌楸(Liriodendron chinense)苗期光合特性研究[J].生态学报,1999,19(2):164～169.
[23] Berry J A, Downton W J S. Photosynthesis. Vol Ⅱ: Development, carbon metabolism and plant productivity [M ]. Academic Press, New York: 1982. 26～31.
[24] 金则新,柯世省.浙江天台山七子花群落主要植物种类的光合特性[J].生态学报,2002 ,22(10):1645～1652.
[25] 柯世省,金则新,陈贤田.浙江天台山七子花等6 种阔叶树光合生态特性[J].植物生态学报,2002,26(3):363～371.
