Effect of loss of plant functional group and simulated nitrogen deposition on subalpine ecosystem properties on the Tibetan Plateau

	Effect of loss of plant functional group and simulated nitrogen deposition on subalpine ecosystem properties on the Tibetan Plateau
	Li, Wenjin; Zhang, Rulan; Liu, Shuangshuang; Li, Weixin; Li, Jinhua; Zhou, Huakun; Knops, Johannes M. H.
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2018
卷号	631-632
关键词	Plant functional group (PFG) Biodiversity loss Compensatory effect Mass ratio hypothesis Nitrogen (N) addition Subalpine meadow removal experiments (SMRE)
英文摘要	Biodiversity loss impacts on ecosystem functioning can vary greatly among ecosystems types and different ecosystem processes can respond differently. Here we conducted a plant functional group removal experiment with and without nitrogen (N) addition (5 g N m(-2) year(-1)) to examine the effects of plant functional group types presence, nitrogen deposition and their interaction effects on plant diversity, aboveground biomass, soil nutrients, soil microbial biomass and soil enzyme activity. After 4 years. the removal of dominant grass did increase subordinates, forb richness, and decreased total aboveground biomass significantly. However, the removal of forb resulted in a rapid decline in species richness, which did not change strongly the aboveground biomass, regardless of N addition. This pattern suggests that the dominant grass can compensate for the loss of forb removal with respect to production, but cannot compensate with respect to species loss. Forb cannot compensate for grass removal with respect to production, but can compensate with respect to species loss. Nitrogen addition only has a small effect on species richness, and also not enhances aboveground biomass. In addition, the majority of soil properties did not respond to either plant functional group removal, or N addition. Only soil CO2 efflux and soil NO3--N content significantly changed with plant functional group removal. Soil respiration rate was positively correlated with both plant species richness (R-2 = 0.97) and aboveground biomass (R-2 = 0.64). Our results show that the short-term losses of plant functional group have significant effects on plant diversity and productivity, and only minor impact on soil properties. (C) 2018 Elsevier B.V. All lights reserved.
内容类型	期刊论文
源URL	[http://210.75.249.4/handle/363003/59999]
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	Li, Wenjin,Zhang, Rulan,Liu, Shuangshuang,et al. Effect of loss of plant functional group and simulated nitrogen deposition on subalpine ecosystem properties on the Tibetan Plateau[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,631-632.
APA	Li, Wenjin.,Zhang, Rulan.,Liu, Shuangshuang.,Li, Weixin.,Li, Jinhua.,...&Knops, Johannes M. H..(2018).Effect of loss of plant functional group and simulated nitrogen deposition on subalpine ecosystem properties on the Tibetan Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,631-632.
MLA	Li, Wenjin,et al."Effect of loss of plant functional group and simulated nitrogen deposition on subalpine ecosystem properties on the Tibetan Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 631-632(2018).