From March 2014 to February 2015, the soil fauna community in the karst cave wetland of Maolan Nature Reserve was investigated. A total of 3,820 soil fauna was obtained, belonging to 31 orders, 11 classes, and 3 phyla...From March 2014 to February 2015, the soil fauna community in the karst cave wetland of Maolan Nature Reserve was investigated. A total of 3,820 soil fauna was obtained, belonging to 31 orders, 11 classes, and 3 phyla. The dominant groups were Araneae, Coleoptera and Hymenoptera, accounting for 48.90% of the total catch. There were 18 common groups and 10 rare groups. The diversity analysis showed that the Banzhai karst cave wetland had the largest soil fauna community diversity index and evenness index and that the Dongsai karst cave wetland had the largest number of groups and individuals. The seasonal variation of the soil fauna in the karst cave wetlands was analyzed: the number of soil fauna individuals showed a downtrend in summer, autumn, spring and winter; there were the highest number of phytophagous soil fauna, followed by predatory soil fauna and saprophagous soil fauna.展开更多
【目的】马蓝属中不少植物具有类似竹类植物的多年生一次性开花现象,但对其研究不多。凹苞马蓝(Strobilanthes retusa D. Fang)是采自广西环江喀斯特地区的标本发表的新种,原记载仅环江有分布,由于标本较少,对其形态特征变异不甚了解。...【目的】马蓝属中不少植物具有类似竹类植物的多年生一次性开花现象,但对其研究不多。凹苞马蓝(Strobilanthes retusa D. Fang)是采自广西环江喀斯特地区的标本发表的新种,原记载仅环江有分布,由于标本较少,对其形态特征变异不甚了解。在贵州省茂兰国家级自然保护区发现该种并补充描述,对研究多年生一次性开花现象植物的开花机制具有重要价值。【方法】对凹苞马蓝贵州居群观察其形态特征及开花习性;扫描电子显微镜下观察凹苞马蓝的花粉和种子形态。【结果】凹苞马蓝为贵州新分布新记录,目前仅知分布于广西和贵州交界的喀斯特地区;凹苞马蓝的花粉粒为长球形,极面观多裂圆形,辐射对称,具3孔沟及12~15条假沟,外壁表面具波状纹饰;种子卵形,表面密被螺旋状多细胞长粗毛,基区大。【结论】确认凹苞马蓝是多年生一次性开花植物,根据标本记载推测其开花周期为7~10 a。讨论了凹苞马蓝的亲缘关系,并对凹苞马蓝的形态特征进行了补充描述,提供了线条图和形态照片。展开更多
基金Sponsored by National Natural Science Foundation of China(31660152)Youth Program Funded by Guizhou Provincial Department of Forestry([2013]10)Guizhou Science and Technology Fund([2013]2135)
文摘From March 2014 to February 2015, the soil fauna community in the karst cave wetland of Maolan Nature Reserve was investigated. A total of 3,820 soil fauna was obtained, belonging to 31 orders, 11 classes, and 3 phyla. The dominant groups were Araneae, Coleoptera and Hymenoptera, accounting for 48.90% of the total catch. There were 18 common groups and 10 rare groups. The diversity analysis showed that the Banzhai karst cave wetland had the largest soil fauna community diversity index and evenness index and that the Dongsai karst cave wetland had the largest number of groups and individuals. The seasonal variation of the soil fauna in the karst cave wetlands was analyzed: the number of soil fauna individuals showed a downtrend in summer, autumn, spring and winter; there were the highest number of phytophagous soil fauna, followed by predatory soil fauna and saprophagous soil fauna.
文摘【目的】马蓝属中不少植物具有类似竹类植物的多年生一次性开花现象,但对其研究不多。凹苞马蓝(Strobilanthes retusa D. Fang)是采自广西环江喀斯特地区的标本发表的新种,原记载仅环江有分布,由于标本较少,对其形态特征变异不甚了解。在贵州省茂兰国家级自然保护区发现该种并补充描述,对研究多年生一次性开花现象植物的开花机制具有重要价值。【方法】对凹苞马蓝贵州居群观察其形态特征及开花习性;扫描电子显微镜下观察凹苞马蓝的花粉和种子形态。【结果】凹苞马蓝为贵州新分布新记录,目前仅知分布于广西和贵州交界的喀斯特地区;凹苞马蓝的花粉粒为长球形,极面观多裂圆形,辐射对称,具3孔沟及12~15条假沟,外壁表面具波状纹饰;种子卵形,表面密被螺旋状多细胞长粗毛,基区大。【结论】确认凹苞马蓝是多年生一次性开花植物,根据标本记载推测其开花周期为7~10 a。讨论了凹苞马蓝的亲缘关系,并对凹苞马蓝的形态特征进行了补充描述,提供了线条图和形态照片。
