气候变化领域集成服务门户(CCPortal): Dynamics of Community Biomass and Soil Nutrients in the Process of Vegetation Succession of Abandoned Farmland in the Loess Plateau

CCPortal

DOI	10.3389/fenvs.2021.580775
	Dynamics of Community Biomass and Soil Nutrients in the Process of Vegetation Succession of Abandoned Farmland in the Loess Plateau
	Gu, Menghe; Liu, Shulin; Duan, Hanchen; Wang, Tao; Gu, Zhong
通讯作者	Wang, T (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Drylands Salinizat Res Stn, Key Lab Desert & Desertificat, Lanzhou, Peoples R China.
发表日期	2021
EISSN	2296-665X
卷号	9
英文摘要	The interaction between vegetation and soil is important for vegetation restoration and reconstruction during the succession of abandoned farmland. We chose four kinds of abandoned farmlands with the time of 1, 6, 12, and 22 years to experiment in the Loess Plateau. The community composition, community biomass, and soil nutrients of the four kinds of abandoned farmlands were studied by the method of temporal-spatial alternation, and the interaction effects among vegetation, biomass, soil nutrients, and abandonment time were analyzed. The results showed there were 33 species belonging to 13 families during the succession and 15 species of Gramineae and Compositae, accounting for 47% of the total community species. The succession trend of abandoned farmland was as follows: The vegetation was the weed community of Heteropappus altaicus + Artemisia capillaris in the beginning of the abandonment stage and became the weed community of Tragus racemosus + Enneapogon borealis after 6 years of abandonment. Then, Leymus secalinus became the dominant population in the community after 12 years of abandonment. When the succession lasted for 22 years, the vegetation became a common advantageous community of Stipa breviflora and Cleistogenes songorica. Soil moisture (SM) was positively correlated with soil nutrients and negatively correlated with abandonment time and community biomass. Soil organic matter (SOM), soil total nitrogen (STN), and alkali hydrolyzable nitrogen (AHN) were the highest in 0-10 cm soil layer, showing obvious surface accumulation. The three decreased with the soil layer, and there was a positive correlation among them. The abandonment time had a positive effect on the above-ground biomass (AGB) and below-ground biomass (BGB) and a negative effect on the SOM, STN, and AHN. The root/shoot ratio (R/S) was positively correlated with SOM and negatively correlated with abandonment time. With the progress of succession, the hierarchical differentiation of the community was gradually obvious, and the community structure begun to complicate. The community better adapted to the arid environment and toward the local top community succession.
关键词	PLANT FOREST
英文关键词	abandoned farmland; community biomass; Loess Plateau; root/shoot ratio; soil nutrients
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000672944000001
来源期刊	FRONTIERS IN ENVIRONMENTAL SCIENCE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253890
作者单位	[Gu, Menghe; Liu, Shulin; Duan, Hanchen; Wang, Tao] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Drylands Salinizat Res Stn, Key Lab Desert & Desertificat, Lanzhou, Peoples R China; [Gu, Zhong] Fujian Agr & Forestry Univ, Coll Agr, Fuzhou, Peoples R China
推荐引用方式 GB/T 7714	Gu, Menghe,Liu, Shulin,Duan, Hanchen,et al. Dynamics of Community Biomass and Soil Nutrients in the Process of Vegetation Succession of Abandoned Farmland in the Loess Plateau[J]. 中国科学院西北生态环境资源研究院,2021,9.
APA	Gu, Menghe,Liu, Shulin,Duan, Hanchen,Wang, Tao,&Gu, Zhong.(2021).Dynamics of Community Biomass and Soil Nutrients in the Process of Vegetation Succession of Abandoned Farmland in the Loess Plateau.FRONTIERS IN ENVIRONMENTAL SCIENCE,9.
MLA	Gu, Menghe,et al."Dynamics of Community Biomass and Soil Nutrients in the Process of Vegetation Succession of Abandoned Farmland in the Loess Plateau".FRONTIERS IN ENVIRONMENTAL SCIENCE 9(2021).