干旱区生态环境知识资源中心(Arid): Stoichiometric characteristics drive the soil aggregate stability after 5 years of vegetation restoration in China

Arid

DOI	10.3389/fevo.2023.1280303
	Stoichiometric characteristics drive the soil aggregate stability after 5 years of vegetation restoration in China
	Kan, Haiming; Xu, Hengkang; Zhang, Guofang; Chen, Chao; Pang, Zhuo; Fan, Xifeng; Wu, Juying
通讯作者	Wu, JY
来源期刊	FRONTIERS IN ECOLOGY AND EVOLUTION
ISSN	2296-701X
出版年	2023
卷号	11
英文摘要	Soil stoichiometric characteristics and aggregate stability are affected by vegetation restoration in degraded land. Yet, it is not known that how the aggregate stability is related to soil stoichiometric characteristics under different vegetation restorations. A 5-year in situ experiment was conducted to investigate the effects of vegetation restoration on the composition, stability and stoichiometric properties of soil aggregates. In the northwest part of Beijing, Bromus inermis Leyss. and Medicago sativa L. were planted in a typical area of desertification, and natural restoration was used as control. Boosted regression trees (BRTs) were applied to partition the factors that control aggregate stability. The results showed that the mean weight diameter (MWD) of soil water-stable aggregates under natural restoration (CK) and Medicago sativa L. sowing treatments (AF) was significantly higher than that under the restoration of the Bromus inermis Leyss. sowing treatments (SB). Compared with CK, AF significantly increased the geometric mean diameter (GMD) water stable aggregates, while SB showed the opposite result. AF significantly increased the proportion of soil aggregates >2 mm compared with CK. AF could improve the stability of soil aggregates by increasing the proportion of large aggregates. For the stoichiometric characteristics of the aggregates, AF increased significantly the value of C/P in 0.053-0.125 mm particle size aggregates in all soil layers. The MBC/MBN ratio aggregates at depths of 0-10 cm and 10-20 cm was also significantly increased in the treatment of AF. The BRTs indicated that stoichiometric ratio is the main factor driving the stability of soil aggregates rather than microbial community characteristics and soil nutrients. The C/P is the main driving factor affecting the MWD, in which the overall stoichiometric influence accounts for 46%, followed by the microbial influence of 36%. For the GMD, MBC/MBN is the main driving factor, and the stoichiometric influence accounts for 94%. Our findings indicate that AF is beneficial to the stability of deep soil aggregates, and their stoichiometric characteristics of soil are the key factors affecting the stability of soil aggregates.
英文关键词	soil aggregate stability soil erodibility vegetation restoration measures stoichiometric characteristics boosted regression trees (BRT)
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:001105887000001
WOS关键词	ORGANIC-MATTER ; PHYSICAL-PROPERTIES ; MICROBIAL BIOMASS ; CARBON ; MANAGEMENT ; NITROGEN ; EROSION ; RUNOFF ; FOREST ; PLANTS
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396504
推荐引用方式 GB/T 7714	Kan, Haiming,Xu, Hengkang,Zhang, Guofang,et al. Stoichiometric characteristics drive the soil aggregate stability after 5 years of vegetation restoration in China[J],2023,11.
APA	Kan, Haiming.,Xu, Hengkang.,Zhang, Guofang.,Chen, Chao.,Pang, Zhuo.,...&Wu, Juying.(2023).Stoichiometric characteristics drive the soil aggregate stability after 5 years of vegetation restoration in China.FRONTIERS IN ECOLOGY AND EVOLUTION,11.
MLA	Kan, Haiming,et al."Stoichiometric characteristics drive the soil aggregate stability after 5 years of vegetation restoration in China".FRONTIERS IN ECOLOGY AND EVOLUTION 11(2023).