Aboveground biomass and its biotic and abiotic modulators of a main food bamboo of the giant panda in a subalpine spruce-fir forest in southwestern China

作     者：Xinyu Xiong Jiangling Zhu Sheng Li Fan Fan Qiong Cai Suhui Ma Haojie Su Chengjun Ji Zhiyao Tang Jingyun Fang 

作者机构：Institute of EcologyPeking UniversityBeijing 100871China Department of EcologyCollege of Urban and Environmental Sciencesand Key Laboratory for Earth Surface Processes of the Ministry of EducationPeking UniversityBeijing 100871China School of Life SciencesPeking UniversityBeijing 100871China 

出 版 物：《Journal of Plant Ecology》 (植物生态学报（英文版）)

年 卷 期：2022年第15卷第1期

页      面：1-12页

核心收录：

学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学] 

基　　金：supported by the National Natural Science Foundation of China(31988102) the National Key Research and Development Program of China(2017YFC0503906) 

主　　题：aboveground biomass community structure Fargesia denudata spruce-fir forests topography 

摘      要：As one of the main food bamboo species of the giant panda(Ailuropoda melanoleuca),Fargesia denudata is widely distributed in the understory of spruce-fir forests in the mountainous area of southwestern ***,the driving factors of its biomass and distribution in the forests are still *** conducted a systematic investigation of the tree and shrub layers(including bamboos)of 209 subplots(20 m×20 m)in a Forest Global Earth Observatory plot,the Wanglang Plot(25.2 ha),to explore the effects of abiotic(topographic and soil characteristics)and biotic(tree density,total basal area(TBA),shrub coverage,etc.)factors on the aboveground biomass of ***(bamboo biomass hereafter).Bamboo biomass averaged 1.17 ton/ha,with a large variation from 0 to 4.88 ton/ha(95%confidence interval)among the 209 *** biomass increased significantly with elevation,slope and mean diameter at breast height of trees,and decreased significantly with tree density,shrub coverage and soil ***,bamboo biomass was not significantly correlated with tree TBA,aspect,soil organic matter or total nitrogen *** random forest model indicated that topographic factors and biotic factors had greater influences on the bamboo biomass than soil characteristics in ***,topographic factors mainly affected the bamboo biomass by changing tree density and soil *** results can provide valuable guidance for the protection of giant pandas and the management of subalpine spruce-fir forests.