光照强度对大熊猫取食缺苞箭竹可食性的影响  

Effects of Light Intensity on Edibility of Fargesia denudata

作　　者：涂绪中 李德文 TU Xuzhong;LI Deweng(Integrated Timber Company of Chengdu Sichuan,Chengdu 610081,China;Sichuan Forestry and Grassland Inventory and Planning Institute,Chengdu 610081,China)

机构地区：[1]四川省成都木材综合工厂,四川成都610081 [2]四川省林业和草原调查规划院,四川成都610081

出　　处：《四川林业科技》2020年第5期105-110,共6页Journal of Sichuan Forestry Science and Technology

摘　　要：缺苞箭竹(Fargesia denudata)是岷山山系大熊猫取食率最高的竹种,其可食性研究是评估大熊猫食物营养状况和适口性的关键。为了揭示不同光照强度对缺苞箭竹营养成分和适口性的影响,本文以四川王朗国家级自然保护区自然生长于林下、林缘和林窗光环境下的缺苞箭竹为研究对象,对其笋、茎、叶中的可食性成分进行分析。结果表明:(1)林下低光照强度环境有利于缺苞箭竹笋中总酚的积累,而不利于粗蛋白、粗脂肪、氨基酸总量的积累;有利于茎中粗蛋白、粗脂肪和氨基酸总量的积累,而不利于纤维素的积累;有利于叶中氨基酸总量、纤维素的积累,而不利于粗蛋白、单宁的积累。(2)林窗中光照强度环境有利于缺苞箭竹笋中粗脂肪、氨基酸总量的积累,不利于茎和叶中粗蛋白的积累,也不利于叶中纤维素、总酚的积累。(3)林窗高光照强度环境有利于缺苞箭竹笋中粗蛋白的积累,而不利于氨基酸总量、总酚的积累;有利于茎中纤维素的积累,而不利于粗蛋白、粗脂肪、氨基酸总量的积累,有利于叶中粗蛋白、单宁、总酚的积累,而不利于氨基酸总量、纤维素的积累。不同光照强度对缺苞箭竹笋、茎、叶的可食性成分含量的影响有差异,为丰富大熊猫取食竹种的可食性研究内容,建议在大熊猫可食竹的可食性研究中应注重不同竹种、不同器官、不同微环境的对比研究。As one of the most important food resources for Ailuropoda melanoleuca in Minshan Mountains,the edibility study of Fargesia denudata is the key to evaluate the nutritional status and palatability for A.melanoleuca.In order to reveal the effects of different light intensity on the nutritional contents and palatability of F.denudata,the edible contents in its shoots,stems and leaves of F.denudata,which grown in natural forest understory,forest edge and forest gap in Wang Lang National Nature Reserve,Sichuan Province,were analyzed.The results were as follows:(1)the low light intensity environment in forest understory was beneficial for the accumulation of total phenols in the bamboo shoots,but unbeneficial for the accumulation of crude protein,crude fat and total amino acids.It was beneficial for the accumulation of crude protein,crude fat,total amino acids in stems,but unbeneficial for the accumulation of cellulose.It was beneficial for the accumulation of total amino acids,cellulose in leaves,but unbeneficial for the accumulation of crude protein and tannin.(2)The middle medium light intensity environment in forest gap was beneficial for the accumulation of crude fat,total amino acids in shoots of F.denudata,but unbeneficial for the accumulation of crude protein in stems and leaves,and unbeneficial for the accumulation of crude protein,cellulose and total phenols in leaves.(3)The high light intensity environment in forest gap was beneficial for the accumulation of crude protein in the bamboo shoots,and unbeneficial for the accumulation of total amino acids,total phenols.It is beneficial for the accumulation of cellulose in stems,and unbeneficial for the accumulation of crude protein,crude fat,total amino acids.It is beneficial for the accumulation of crude protein,tannin,total phenols in leaves,and unbeneficial for the accumulation of total amino acids,cellulose.These results indicated that different light intensity had different effects on the edible contents in shoots,stems and leaves of F.denudata.It would be a

关 键 词：缺苞箭竹 光照强度 可食性 大熊猫 

分 类 号：S795.2[农业科学—林木遗传育种]