摘要
为了研究单宁和营养成分含量在大熊猫取食时对不同竹种以及竹种不同部位选择的影响,本文在野外实地调查的基础上,对邛崃山系鞍子河自然保护区的冷箭竹、拐棍竹、白夹竹这3种大熊猫主食竹种的单宁、粗蛋白以及钙、镁、铜、锌等矿质元素含量进行测定对比,综合分析了不同主食竹种、不同营养器官以及不同部位中单宁和营养成分含量与大熊猫取食选择的相关性。结果表明:1)3种竹种相比较,冷箭竹的单宁含量最低,拐棍竹含量最高;3竹种中,全竿单宁平均含量高于茎部含量,各竹种的中、上部含量明显低于下部含量。2)冷箭竹粗蛋白含量最高,拐棍竹含量最低;不同竹种间矿质元素含量差异较大,主食竹的粗蛋白含量和锌元素含量都与大熊猫取食的断桩高度呈负相关性。3)大熊猫趋向于选择单宁含量低而粗蛋白含量高的竹种及部位,单宁含量和粗蛋白含量可以共同作为大熊猫对主食竹种以及主食竹不同部位取食的重要影响因子。
To study the effects of tannin and nutrient elements in bamboo species and different parts on giant panda herbivory tendency, after field survey, samples from three species of staple food bamboo Bashania fangiana, Fargesia robusta, and Phyllostachys bissetii for giant panda from Anzihe Nature Reserve in Qionglai Mountain, southwestern China were collected. The contents of tannin, crude protein and some mineral elements, such as Ca, Mg, Zn, Cu, were measured. The correlations between the tendency of herbivory and tannin and other nutrient elements among different species, varied vegetative organs and different parts were analyzed. The conclusions were as follows： 1 ） B. fangiana had the lowest tannin content while F. robusta had the highest, and the tannin content in stem was the lowest when compared with other parts for all of the three. 2） In terms of some nutrient elements, significant differences among these three species were identified, and the B. fangiana had the highest content of crude protein while F. robusta had the lowest; and the correlations between the content of crude protein and Zn and the average height of stumps of culms grazed by panda were negative. 3 ） Giant panda preferred to eat thespecies and the sites of bamboo tannin and crude protein can be the sites of bamboo. which contained lower tannin and considered as important factors for higher crude protein; the content of giant panda to select the species and
出处
《北京林业大学学报》
CAS
CSCD
北大核心
2012年第6期42-46,共5页
Journal of Beijing Forestry University
基金
国家林业局大熊猫国际合作项目(SD0601)
关键词
主食竹
单宁
营养成分
取食
大熊猫
taple food bamboo
tannin
nutrition elements
herbivory
giant panda
