To determine the effects of eco-factors on the regeneration of arrow bamboo in giant panda habitat,a field study was conducted in the Baozuo and Gonggangling Nature Reserves,Sichuan Province,China.A total of 183 quadr...To determine the effects of eco-factors on the regeneration of arrow bamboo in giant panda habitat,a field study was conducted in the Baozuo and Gonggangling Nature Reserves,Sichuan Province,China.A total of 183 quadrats(10 m×10 m) and 717 small quadrats(1 m×1 m) were investigated within the study site.Bamboo seedling density was used as an indicator of natural regeneration.Twelve factors were measured,which included topography and forest factors(elevation,slope aspect,slope degree,slope position,canopy cover,and shrub cover) and microhabitat factors(upper vegetation cover,herb cover,litter layer cover,moss cover,moss thickness,and dead bamboo density).A One-Way ANOVA was used to analyze the effects of topography and forest factors on seedling density,and a GLM(Generalized Linear Model) procedure was performed to examine the relationship between seedling density and microhabitat factors.The results indicated that elevation and canopy cover had highly significant effects on seedling density:bamboo seedling density was highest and showed the best regeneration at middle elevations(2800-3000 m) and under medium to medium-high canopy cover.Moss thickness,moss cover,and dead bamboo density were the most important microhabitat factors influencing the natural regeneration of bamboo:seedling density increased with increasing moss cover and moss thickness and decreased with increasing dead bamboo density.We propose that removal of dead bamboo and controlling grazing activities may accelerate the process of bamboo regeneration.展开更多
由于大熊猫选择部分竹类植物为主要食物源,大熊猫主食竹的地理分布是决定大熊猫地理分布的重要影响因素之一。因此,对大熊猫主食竹的种类与分布进行研究,对于深入了解大熊猫的迁徙历史和协同演化、以及推动大熊猫保护工作的科学、健康...由于大熊猫选择部分竹类植物为主要食物源,大熊猫主食竹的地理分布是决定大熊猫地理分布的重要影响因素之一。因此,对大熊猫主食竹的种类与分布进行研究,对于深入了解大熊猫的迁徙历史和协同演化、以及推动大熊猫保护工作的科学、健康、有序发展,尤其是迁地保护意义重大。大熊猫主食竹曾经报道过11属,包括65种、1变种和3变型。其中,箣竹属Bambusa Retz.corr.Schreber 2种,慈竹属Neosinocalamus Keng f.1种3变型,刚竹属Phyllostachys Sieb.et Zucc.5种1变种,方竹属Chimonobambusa Makino 6种,筇竹属Qiongzhuea Hsueh et Yi 5种,镰序竹属Drepanostachyum Keng f.2种,箭竹属Fargesia Franch.emend.Yi 25种,玉山竹属Yushania Keng f.10种,苦竹属Pleioblastus Nakai 1种,巴山木竹属Bashania Keng f.et Yi 6种,箬竹属Indocalamus Nakai 2种。后来,黄毛竹、大琴丝竹和金丝慈竹被修订为栽培品种Neosinocalamus affinis‘Chrysotrichus’、N.affinis‘Flavidorivens’、N.affinis‘Flavidorivens’。本文增补了方竹属3种、4栽培品种;刚竹属2种;箭竹属2种;玉山竹属1种;月月竹属Menstruocalamus Yi 1种;茶秆竹属Pseudosasa Makino ex Nakai 1种;箬竹属4种。共计7属、13种、4栽培品种。到目前为止,中国的大熊猫主食竹共有13属、78种、1变种、7栽培品种。展开更多
基金the National Science Foundation for Fostering Talents in Basic Research of the National Natural Science Foundation of China(J1103518)
文摘To determine the effects of eco-factors on the regeneration of arrow bamboo in giant panda habitat,a field study was conducted in the Baozuo and Gonggangling Nature Reserves,Sichuan Province,China.A total of 183 quadrats(10 m×10 m) and 717 small quadrats(1 m×1 m) were investigated within the study site.Bamboo seedling density was used as an indicator of natural regeneration.Twelve factors were measured,which included topography and forest factors(elevation,slope aspect,slope degree,slope position,canopy cover,and shrub cover) and microhabitat factors(upper vegetation cover,herb cover,litter layer cover,moss cover,moss thickness,and dead bamboo density).A One-Way ANOVA was used to analyze the effects of topography and forest factors on seedling density,and a GLM(Generalized Linear Model) procedure was performed to examine the relationship between seedling density and microhabitat factors.The results indicated that elevation and canopy cover had highly significant effects on seedling density:bamboo seedling density was highest and showed the best regeneration at middle elevations(2800-3000 m) and under medium to medium-high canopy cover.Moss thickness,moss cover,and dead bamboo density were the most important microhabitat factors influencing the natural regeneration of bamboo:seedling density increased with increasing moss cover and moss thickness and decreased with increasing dead bamboo density.We propose that removal of dead bamboo and controlling grazing activities may accelerate the process of bamboo regeneration.
文摘由于大熊猫选择部分竹类植物为主要食物源,大熊猫主食竹的地理分布是决定大熊猫地理分布的重要影响因素之一。因此,对大熊猫主食竹的种类与分布进行研究,对于深入了解大熊猫的迁徙历史和协同演化、以及推动大熊猫保护工作的科学、健康、有序发展,尤其是迁地保护意义重大。大熊猫主食竹曾经报道过11属,包括65种、1变种和3变型。其中,箣竹属Bambusa Retz.corr.Schreber 2种,慈竹属Neosinocalamus Keng f.1种3变型,刚竹属Phyllostachys Sieb.et Zucc.5种1变种,方竹属Chimonobambusa Makino 6种,筇竹属Qiongzhuea Hsueh et Yi 5种,镰序竹属Drepanostachyum Keng f.2种,箭竹属Fargesia Franch.emend.Yi 25种,玉山竹属Yushania Keng f.10种,苦竹属Pleioblastus Nakai 1种,巴山木竹属Bashania Keng f.et Yi 6种,箬竹属Indocalamus Nakai 2种。后来,黄毛竹、大琴丝竹和金丝慈竹被修订为栽培品种Neosinocalamus affinis‘Chrysotrichus’、N.affinis‘Flavidorivens’、N.affinis‘Flavidorivens’。本文增补了方竹属3种、4栽培品种;刚竹属2种;箭竹属2种;玉山竹属1种;月月竹属Menstruocalamus Yi 1种;茶秆竹属Pseudosasa Makino ex Nakai 1种;箬竹属4种。共计7属、13种、4栽培品种。到目前为止,中国的大熊猫主食竹共有13属、78种、1变种、7栽培品种。
