浙江天童常见种幼苗的光合特性及非结构性碳水化合物储存

摘要/Abstract

摘要： 对浙江天童国家森林公园20种常见种幼苗的光合特性以及非结构性碳水化合物(NSC)储存进行了研究.结果表明：常绿种幼苗拥有较低的光补偿点(LCP)、暗呼吸速率(Rd)和较高的表观量子效率(AQE)、最大净光合速率(Amax)；落叶种则表现出较高的LCP、Rd和较低的AQE、Amax.常绿灌木的光饱和点(LSP)显著大于常绿乔木，而其他光合参数均无显著差异.根部是非结构性碳水化合物储存的主要场所.常绿种幼苗根部可溶性糖、淀粉、NSC含量以及茎部可溶性糖含量均显著高于落叶种，而两者茎部淀粉和NSC含量差异不显著.常绿灌木根部可溶性糖、NSC含量以及茎部淀粉、NSC含量均显著大于常绿乔木，而两者根部淀粉和茎部可溶性糖含量差异不显著.“高生长，低储存”的策略主要以喜阳或作为先锋种的落叶种为代表；强耐荫的常绿灌木主要采用“低生长，高储存”的策略进行林下更新；半耐荫的常绿乔木树种的光合能力与碳水化合物储存介于两者之间.

关键词: 天童, 常见种, 幼苗, 光合特性, 非结构性碳水化合物

Abstract: The photosynthesis traits and the storage of non-structural carbohydrate (NSC) of twenty common plants seedlings were studied in this case. The results are as follows. There are lower light compensation point (LCP), lower dark respiration rate (Rd), higher apparent quantum efficiency (AQE) and maximum net photosynthetic rate (Amax) in the seedlings of evergreen trees; while the deciduous species show the opposite results. The light saturation point (LSP) of evergreen shrubs is higher than that of evergreen trees. And the other photosynthetic paramaters have no significant difference. Roots are the key place of storage of NSC. The contents of sugar, starch and NSC in root and sugar in stem of evergreen trees seedlings are significantly higher than that of deciduous species, but the contents of starch and NSC in stem have no difference between them. The contents of sugar and NSC in root and starch and NSC in stem of evergreen shrubs are greater than that of evergreen trees, but the contents of starch in root and sugar in stem have no difference between them. Light-demanding species or pioneer species are the type of “fast-growth, low-storage”, and strong shade-tolerant evergreen shrubs are the type of “slow-growth, high-storage”, and photosynthetic capacity and carbohydrate storage of the semi-shade-tolerant evergreen trees are medium.

Key words: Tiantong, common species, seedlings, photosynthesis traits, non-structural carbohydrate

中图分类号:

Q946

赵镭，杨海波，王达力，张娜，王希华. 浙江天童常见种幼苗的光合特性及非结构性碳水化合物储存[J]. 华东师范大学学报(自然科学版), 2011, 2011(4): 35-44.

ZHAO Lei， YANG Hai-bo， WANG Da-li，ZHANG Na， WANG Xi-hua. Seedlings photosynthesis traits and non-structural carbohydrate storage of common species in Tiantong National Forest Park, Zhejiang Province[J]. Journal of East China Normal University(Natural Sc, 2011, 2011(4): 35-44.

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