干旱区生态环境知识资源中心(Arid): Degradation significantly decreased the ecosystem multifunctionality of three alpine grasslands: evidences from a large-scale survey on the Qinghai-Tibetan Plateau

Arid

	Degradation significantly decreased the ecosystem multifunctionality of three alpine grasslands: evidences from a large-scale survey on the Qinghai-Tibetan Plateau
	Xu Yudan; Dong Shikui; Shen Hao; Xiao Jiannan; Li Shuai; Gao Xiaoxia; Wu Shengnan
来源期刊	山地科学学报
ISSN	1672-6316
出版年	2021
卷号	18 期号:2
英文摘要	Owing to the joint effects of ecosystem fragility, anthropogenic disturbance and climate change, alpine grasslands (alpine meadow, alpine steppe and alpine desert) have experienced serious degradation during the past several decades. Grasslands degradation has severely affected the delivery of ecosystem multifunctionality (EMF) and services, and then threatens the livelihood of local herdsmen and ecological security of China. However, we still lack comprehensive insights about the effects of degradation and climatic factors on EMF of alpine grasslands, especially for alpine desert ecosystem. Therefore, we applied a large-scale field investigation to answer this question. Our results suggested grassland degradation significantly decreased the belowground ecosystem multifunctionality (BEMF) and EMF of alpine grasslands and aboveground ecosystem multifunctionality (AEMF) of alpine meadow, while did not reduce the AEMF of alpine steppe and desert. Except for the insignificant difference between degraded steppe and degraded desert in AEMF, the alpine meadow showed the highest AEMF, BEMF and EMF, alpine steppe ranked the second and alpine desert was the lowest. AEMF, BEMF and EMF of health alpine grasslands were strongly affected by mean annual precipitation (MAP) (19%-51%) and mean annual temperature (MAT) (9%- 36%), while those of degraded meadow and degraded desert were not impacted by precipitation and temperature. AEMF and BEMF showed a synergistic relationship in healthy alpine grasslands (12%-28%), but not in degraded grasslands. Our findings emphasized the urgency of implementing the feasible ecological restoration project to mitigate the negative influences of grassland degradation on EMF of alpine ecosystems.
英文关键词	Climatic factors Ecosystem multifunctionality Grassland degradation Grassland type Plant community Soil nutrient
类型	Article
语种	英语
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6896628
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/354388
推荐引用方式 GB/T 7714	Xu Yudan,Dong Shikui,Shen Hao,et al. Degradation significantly decreased the ecosystem multifunctionality of three alpine grasslands: evidences from a large-scale survey on the Qinghai-Tibetan Plateau[J],2021,18(2).
APA	Xu Yudan.,Dong Shikui.,Shen Hao.,Xiao Jiannan.,Li Shuai.,...&Wu Shengnan.(2021).Degradation significantly decreased the ecosystem multifunctionality of three alpine grasslands: evidences from a large-scale survey on the Qinghai-Tibetan Plateau.山地科学学报,18(2).
MLA	Xu Yudan,et al."Degradation significantly decreased the ecosystem multifunctionality of three alpine grasslands: evidences from a large-scale survey on the Qinghai-Tibetan Plateau".山地科学学报 18.2(2021).