Biomass partitioning pattern of Rheum tanguticum on the Qinghai-Tibet Plateau was affected by water-related factors

	Biomass partitioning pattern of Rheum tanguticum on the Qinghai-Tibet Plateau was affected by water-related factors
	Xiong, Feng; Nie, Xiuqing; Yang, Lucun; Wang, Lingling; Li, Jingjing; Zhou, Guoying
刊名	PLANT ECOLOGY
	2021
卷号	222 期号:4
关键词	Rheum tanguticum Qinghai– Tibet Plateau Biomass partitioning Environmental factors Scaling exponent
英文摘要	To identify the patterns of aboveground biomass (M-A) and belowground biomass (M-B) partitioning of a tall perennial herbal plant, Rheum tanguticum Maxim. ex Balf. (R. tanguticum), we determined M-A, M-B, total biomass (M-T), and below- to aboveground biomass ratio (M-B/M-A) through three consecutive sampling campaigns during 2016-2018 on the Qinghai-Tibetan plateau. We then documented M-A, M-B, M-T, and M-B/M-A, and their log-log relationship with environmental factors using data from 47 sites. M-B/M-A showed a significant negative relationship with mean annual precipitation (MAP) and altitude but a positive relationship with mean annual temperature (MAT), soil total nitrogen content (TN), and soil humidity (SH). While M-T increased with altitude and decreased with MAT, TN, and SH, but the relationship between MAP and M-T was not significant. Reduced major axis analysis revealed a slope of the log-log relationship between M-A and M-B to be 1.16, supporting an allometric partitioning pattern of R. tanguticum. Furthermore, the scaling exponent revealed different changes to different environmental factors. Specifically, scaling exponent was sensitive to the gradient of MAP and SH, but not to the gradient of altitude, MAT, or TN. This indicated that the scaling exponent was affected by water availability.
内容类型	期刊论文
源URL	[http://210.75.249.4/handle/363003/60838]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Xiong, Feng,Nie, Xiuqing,Yang, Lucun,et al. Biomass partitioning pattern of Rheum tanguticum on the Qinghai-Tibet Plateau was affected by water-related factors[J]. PLANT ECOLOGY,2021,222(4).
APA	Xiong, Feng,Nie, Xiuqing,Yang, Lucun,Wang, Lingling,Li, Jingjing,&Zhou, Guoying.(2021).Biomass partitioning pattern of Rheum tanguticum on the Qinghai-Tibet Plateau was affected by water-related factors.PLANT ECOLOGY,222(4).
MLA	Xiong, Feng,et al."Biomass partitioning pattern of Rheum tanguticum on the Qinghai-Tibet Plateau was affected by water-related factors".PLANT ECOLOGY 222.4(2021).