干旱区生态环境知识资源中心(Arid): The Response of Vegetation Biomass to Soil Properties along Degradation Gradients of Alpine Meadow at Zoige Plateau

Arid

	The Response of Vegetation Biomass to Soil Properties along Degradation Gradients of Alpine Meadow at Zoige Plateau
	Liu Miao; Zhang Zhenchao; Sun Jian; Xu Ming; Ma Baibing; Tijjani Sadiy Baba; Chen Youjun; Zhou Qingping
来源期刊	Chinese Geographical Science
ISSN	1002-0063
出版年	2020
卷号	30 期号:3 页码:446-455
英文摘要	Alpine grassland of the Tibetan Plateau has undergone severe degradation, even desertification. However, several questions remain to be answered, especially the response mechanisms of vegetation biomass to soil properties. In this study, an experiment on degradation gradients was conducted in an alpine meadow at the Zoige Plateau in 2017. Both vegetation characteristics and soil properties were observed during the peak season of plant growth. The classification and regression tree model (CART) and structural equation modelling (SEM) were applied to screen the main factors that govern the vegetation dynamics and explore the interaction of these screened factors. Both aboveground biomass (AGB) and belowground biomass (BGB) experienced a remarkable decrease along the degradation gradients. All soil properties experienced significant variations along the degradation gradients at the 0.05 significance level. Soil physical and chemical properties explained 54.78% of the variation in vegetation biomass along the degradation gradients. AGB was mainly influenced by soil water content (SWC), soil bulk density (SBD), soil organic carbon (SOC), soil total nitrogen (STN), and pH. Soil available nitrogen (SAN), SOC and pH, had significant influence on BGB. Most soil properties had positive effects on AGB and BGB, while SBD and pH had a slightly negative effect on AGB and BGB. The correlations of SWC with AGB and BGB were relatively less significant than those of other soil properties. Our results highlighted that the soil properties played important roles in regulating vegetation dynamics along the degradation gradients and that SWC is not the main factor limiting plant growth in the humid Zoige region. Our results can provide guidance for the restoration and improvement of degraded alpine grasslands on the Tibetan Plateau.
英文关键词	vegetation biomass soil properties degradation gradients structural equation modelling Zoige Plateau
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:6731580
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336290
作者单位	Liu Miao, Synthesis Research Centre of Chinese Ecosystem Research Network, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Key Laboratory of Ecosystem Network Observation and Modelling, Chinese Academy of Sciences, Beijing 100101, China.; Zhang Zhenchao, Synthesis Research Centre of Chinese Ecosystem Research Network, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Key Laboratory of Ecosystem Network Observation and Modelling, Chinese Academy of Sciences, Beijing 100101, China.; Sun Jian, Synthesis Research Centre of Chinese Ecosystem Research Network, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences;;Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Key Laboratory of Ecosystem Network Observation and Modelling, Chinese Academy of Sciences;;State Key Laboratory of Urban and Regional Ecology, ;;, Beijing;;Beijing 100101;;100085.; Xu Ming, Synthes...
推荐引用方式 GB/T 7714	Liu Miao,Zhang Zhenchao,Sun Jian,et al. The Response of Vegetation Biomass to Soil Properties along Degradation Gradients of Alpine Meadow at Zoige Plateau[J],2020,30(3):446-455.
APA	Liu Miao.,Zhang Zhenchao.,Sun Jian.,Xu Ming.,Ma Baibing.,...&Zhou Qingping.(2020).The Response of Vegetation Biomass to Soil Properties along Degradation Gradients of Alpine Meadow at Zoige Plateau.Chinese Geographical Science,30(3),446-455.
MLA	Liu Miao,et al."The Response of Vegetation Biomass to Soil Properties along Degradation Gradients of Alpine Meadow at Zoige Plateau".Chinese Geographical Science 30.3(2020):446-455.