佛坪保护区带状间伐后巴山木竹林营养状况差异研究

通过对带状间伐后1a生竹和2a生竹的粗蛋白、粗脂肪、粗纤维、灰分、干物质在不同样方(对照样方、间伐样方)和不同部位(秆、枝、叶)差异分析,结论如下:1)带状间伐后,间伐样方的粗蛋白、粗脂肪、干物质和灰分在秆部高于对照样方,粗纤维则相反。2)带状间伐后,2a生竹和1a生竹相比,粗蛋白含量下降;粗脂肪和灰分在秆、枝部下降,在叶部增加;粗纤维在秆部基本相等,在枝部增加,在叶部下降,干物质含量在秆、枝和叶各部位增加。该研究结果为人工改造巴山木竹林质量和解释大熊猫取食行为提供了科学依据。

Study on Nutrition Difference of Bashania Bamboo Forest after Strip Thinning in Foping Nature Reserve

Based on the difference analysis on nutrition contents such as crude protein,crude fat,crude fiber,ash and dry matter,in different samples(control sample and cutting sample) and different parts(stems,branches and leaves) of the 1st and 2nd year(s) regeneration bamboo after strip thinning the results show that:1) after strip thinning,cutting sample of nutrition contents,such as crude protein,crude fat,dry matter and ash,is higher than control sample,crude fiber opposite.2) after strip thinning and comparison with 1st year bamboo and 2nd year bamboo,protein content decreased,crude fat and ash content decreased in stems and branches,increased in leaves;crude fiber content increased in branches,decreased in leaves;and dry matter increased.These results provide a scientific basis for artificially regenerated bamboo forest and explain feeding behavior of giant panda.