[Objectives]To study the pharmacognosy of the stems and leaves of Adenanthera pavonina Linn.var.microsperma and to provide reference materials for clinical application and further development and utilization.[Methods]...[Objectives]To study the pharmacognosy of the stems and leaves of Adenanthera pavonina Linn.var.microsperma and to provide reference materials for clinical application and further development and utilization.[Methods]The stems and leaves were sliced by paraffin section method,and the tissue structure and microscopic characteristics were observed by routine microscopic technique.[Results]It was found that the epidermal cell wall was red with unicellular non-glandular hairs,the phloem fiber bundles were arranged in rings,and the xylem vessels were large and few,arranged in the shape of"V".The non-glandular hairs in the cross section of leaves were mostly unicellular,and the palisade tissues were in 2-3 rows.Most of the vessels in the powder were with marginal pores and crystal sheath fibers,and there were a lot of non-glandular hairs in single cells.[Conclusions]The above characteristics can be used as the main basis for the identification of Adenanthera pavonina Linn.var.microsperma.展开更多
以天然云冷杉(Picea jezoensis var.microsperma(Lindl.)W.C.Cheng&L.K.Fu and Abiesnephrolepis(Trautv.)Maxim.)针阔混交林为研究对象,基于4块1hm^2固定样地林分调查数据和等距离网格布点取样的400个半分解层凋落物样品的养分测...以天然云冷杉(Picea jezoensis var.microsperma(Lindl.)W.C.Cheng&L.K.Fu and Abiesnephrolepis(Trautv.)Maxim.)针阔混交林为研究对象,基于4块1hm^2固定样地林分调查数据和等距离网格布点取样的400个半分解层凋落物样品的养分测定数据,采用地统计学方法,分析凋落物磷浓度、归还量及利用效率的空间格局特征及其影响因素.结果表明:4块样地凋落物磷浓度均值为1.26g/kg,归还量均值为24.57kg/hm^2,利用效率均值为841.74,均表现为中等强度变异,具有明显的空间异质性,且同一样地,变异程度呈现出磷归还量>磷利用效率>磷浓度.凋落物磷浓度、归还量(样地Ⅲ和Ⅳ结构比大于75%,其空间异质性主要由随机效应引起,不适合进行空间插值)和利用效率主要受结构性因素影响,具有较高的空间自相关性.同一样地磷利用效率的空间异质性较磷浓度及归还量低,各样地磷浓度、归还量和利用效率空间自相关范围分别为9.9-40.5m、11.9-52.9m和8.1-39.3m.同一样地磷利用效率的分形维数高于磷浓度,空间格局较磷浓度复杂,磷浓度空间依赖性更强,具有更好的结构性.凋落物磷浓度、归还量(除样地Ⅲ和Ⅳ)和利用效率呈现条带状和斑块状梯度性分布,且磷浓度和利用效率的空间分布格局相似.凋落物磷浓度、归还量和利用效率受到郁闭度、物种数和植物多样性等多种因子的影响.展开更多
基金Supported by Guangxi University Scientific Research Grant Program(YB2014192)Guangxi Key R&D Program(GuiKe AB19110027)Guangxi University High-level Innovation Team and Outstanding Scholars Program[GuiJiaoRen(2014)07].
文摘[Objectives]To study the pharmacognosy of the stems and leaves of Adenanthera pavonina Linn.var.microsperma and to provide reference materials for clinical application and further development and utilization.[Methods]The stems and leaves were sliced by paraffin section method,and the tissue structure and microscopic characteristics were observed by routine microscopic technique.[Results]It was found that the epidermal cell wall was red with unicellular non-glandular hairs,the phloem fiber bundles were arranged in rings,and the xylem vessels were large and few,arranged in the shape of"V".The non-glandular hairs in the cross section of leaves were mostly unicellular,and the palisade tissues were in 2-3 rows.Most of the vessels in the powder were with marginal pores and crystal sheath fibers,and there were a lot of non-glandular hairs in single cells.[Conclusions]The above characteristics can be used as the main basis for the identification of Adenanthera pavonina Linn.var.microsperma.
文摘以天然云冷杉(Picea jezoensis var.microsperma(Lindl.)W.C.Cheng&L.K.Fu and Abiesnephrolepis(Trautv.)Maxim.)针阔混交林为研究对象,基于4块1hm^2固定样地林分调查数据和等距离网格布点取样的400个半分解层凋落物样品的养分测定数据,采用地统计学方法,分析凋落物磷浓度、归还量及利用效率的空间格局特征及其影响因素.结果表明:4块样地凋落物磷浓度均值为1.26g/kg,归还量均值为24.57kg/hm^2,利用效率均值为841.74,均表现为中等强度变异,具有明显的空间异质性,且同一样地,变异程度呈现出磷归还量>磷利用效率>磷浓度.凋落物磷浓度、归还量(样地Ⅲ和Ⅳ结构比大于75%,其空间异质性主要由随机效应引起,不适合进行空间插值)和利用效率主要受结构性因素影响,具有较高的空间自相关性.同一样地磷利用效率的空间异质性较磷浓度及归还量低,各样地磷浓度、归还量和利用效率空间自相关范围分别为9.9-40.5m、11.9-52.9m和8.1-39.3m.同一样地磷利用效率的分形维数高于磷浓度,空间格局较磷浓度复杂,磷浓度空间依赖性更强,具有更好的结构性.凋落物磷浓度、归还量(除样地Ⅲ和Ⅳ)和利用效率呈现条带状和斑块状梯度性分布,且磷浓度和利用效率的空间分布格局相似.凋落物磷浓度、归还量和利用效率受到郁闭度、物种数和植物多样性等多种因子的影响.
