气候变化领域集成服务门户(CCPortal): Community species diversity mediates the trade-off between aboveground and belowground biomass for grasses and forbs in degraded alpine meadow, Tibetan Plateau

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DOI	10.1002/ece3.8048
	Community species diversity mediates the trade-off between aboveground and belowground biomass for grasses and forbs in degraded alpine meadow, Tibetan Plateau
	Zhou, Tiancai; Sun, Jian; Zong, Ning; Hou, Ge; Shi, Peili
通讯作者	Shi, PL (通讯作者)
发表日期	2021
ISSN	2045-7758
起始页码	13259
结束页码	13267
卷号	11 期号:19
英文摘要	Although many empirical experiments have shown that increasing degradation results in lower aboveground biomass (AGB), our knowledge of the magnitude of belowground biomass (BGB) for individual plants is a prerequisite for accurately revealing the biomass trade-off in degraded grasslands. Here, by linking the AGB and BGB of individual plants, species in the community, and soil properties, we explored the biomass partitioning patterns in different plant functional groups (grasses of Stipa capillacea and forbs of Anaphalis xylorhiza). Our results indicated that 81% and 60% of the biomass trade-off variations could be explained by environmental factors affecting grasses and forbs, respectively. The change in community species diversity dominated the biomass trade-off via either direct or indirect effects on soil properties and biomass. However, the community species diversity imparted divergent effects on the biomass trade-off for grasses (scored at -0.72) and forbs (scored at 0.59). Our findings suggest that plant communities have evolved two contrasting strategies of biomass allocation patterns in degraded grasslands. These are the conservative strategy in grasses, in which plants with larger BGB trade-off depends on gigantic roots for soil resources, and the opportunistic strategy in forbs, in which plants can adapt to degraded lands using high variation and optimal biomass allocation.
关键词	PLANT DIVERSITY 3 RIVERS SOIL C ROOT SUCCESSION ALLOCATION NITROGEN PRODUCTIVITY RESTORATION DEGRADATION
英文关键词	alpine meadow; biomass allocation; degradation; plant function groups; strategy
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
WOS类目	Ecology ; Evolutionary Biology
WOS记录号	WOS:000690791100001
来源期刊	ECOLOGY AND EVOLUTION
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260189
推荐引用方式 GB/T 7714	Zhou, Tiancai,Sun, Jian,Zong, Ning,et al. Community species diversity mediates the trade-off between aboveground and belowground biomass for grasses and forbs in degraded alpine meadow, Tibetan Plateau[J]. 中国科学院青藏高原研究所,2021,11(19).
APA	Zhou, Tiancai,Sun, Jian,Zong, Ning,Hou, Ge,&Shi, Peili.(2021).Community species diversity mediates the trade-off between aboveground and belowground biomass for grasses and forbs in degraded alpine meadow, Tibetan Plateau.ECOLOGY AND EVOLUTION,11(19).
MLA	Zhou, Tiancai,et al."Community species diversity mediates the trade-off between aboveground and belowground biomass for grasses and forbs in degraded alpine meadow, Tibetan Plateau".ECOLOGY AND EVOLUTION 11.19(2021).