干旱区生态环境知识资源中心(Arid): Effects of Rock Fragments on the Soil Physicochemical Properties and Vegetation on the Northeastern Tibetan Plateau

Arid

DOI	10.3389/fenvs.2021.693769
	Effects of Rock Fragments on the Soil Physicochemical Properties and Vegetation on the Northeastern Tibetan Plateau
	Zheng, Ying; Chen, Ning; Zhang, Cankun; Dong, Xiaoxue; Zhao, Changming
通讯作者	Zhao, CM (corresponding author), Lanzhou Univ, Sch Life Sci, State Key Lab Grassland Agroecosyst, Lanzhou, Peoples R China. ; Zhao, CM (corresponding author), Lanzhou Univ, Yuzhong Mt Ecosyst Field Observat & Res Stn, Lanzhou, Peoples R China.
来源期刊	FRONTIERS IN ENVIRONMENTAL SCIENCE
EISSN	2296-665X
出版年	2021
卷号	9
英文摘要	Stony soils are very widely distributed and contain abundant rock fragments (>2 mm), which impose major effects on soil properties and plant growth. However, the role of rock fragments is still often neglected, which can lead to an inadequate understanding of the interaction between plants and soil. Undisturbed soil columns were collected from three alpine grasslands on the Qilian Mountain, and the X-ray computed tomography method was applied to investigate the characteristics of rock fragments. The results showed there was significant difference in number density, volumetric content and surface area density of rock fragment among the three grasslands, and followed the order of alpine meadow > alpine steppe > alpine desert steppe. In addition, the soil organic carbon, total nitrogen, total phosphorus, available phosphorus, N-NH4+, and N-NO3- contents in fine earth all increased with increasing number density, volumetric content and surface area density but to different degrees. Furthermore, positive correlations were observed between the rock shape factor and belowground biomass (R-2 = 0.531, p < 0.05), between the rock volumetric content and aboveground biomass (R-2 = 0.527, p < 0.05), and between number density and Simpson's index (R-2 = 0.875, p < 0.05). Our findings suggest that within a certain range, the increase in rock fragment content is conducive to soil nutrient accumulation and soil water storage and circulation and changes plant features, which contributes to the growth of plants. In addition, rock fragments should be given more consideration when investigating the relationships between soil and vegetation and their response to climate change in future studies.
英文关键词	stony soil rock fragments X-ray CT tibetan plateau alpine grassland
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000669479500001
WOS关键词	ORGANIC-CARBON STOCKS ; STONY SOILS ; ALPINE MEADOW ; PHYSICAL-PROPERTIES ; SOLUTE TRANSPORT ; WATER-CONTENT ; BULK-DENSITY ; MACROPORES ; NITROGEN ; EROSION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350298
作者单位	[Zheng, Ying; Chen, Ning; Zhang, Cankun; Dong, Xiaoxue; Zhao, Changming] Lanzhou Univ, Sch Life Sci, State Key Lab Grassland Agroecosyst, Lanzhou, Peoples R China; [Zheng, Ying; Chen, Ning; Zhang, Cankun; Dong, Xiaoxue; Zhao, Changming] Lanzhou Univ, Yuzhong Mt Ecosyst Field Observat & Res Stn, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Ying,Chen, Ning,Zhang, Cankun,et al. Effects of Rock Fragments on the Soil Physicochemical Properties and Vegetation on the Northeastern Tibetan Plateau[J]. 兰州大学,2021,9.
APA	Zheng, Ying,Chen, Ning,Zhang, Cankun,Dong, Xiaoxue,&Zhao, Changming.(2021).Effects of Rock Fragments on the Soil Physicochemical Properties and Vegetation on the Northeastern Tibetan Plateau.FRONTIERS IN ENVIRONMENTAL SCIENCE,9.
MLA	Zheng, Ying,et al."Effects of Rock Fragments on the Soil Physicochemical Properties and Vegetation on the Northeastern Tibetan Plateau".FRONTIERS IN ENVIRONMENTAL SCIENCE 9(2021).