气候变化领域集成服务门户(CCPortal): Native broadleaf tree species stimulate topsoil nutrient transformation by changing microbial community composition and physiological function, but not biomass in subtropical plantations with low P status

CCPortal

DOI	10.1016/j.foreco.2020.118491
	Native broadleaf tree species stimulate topsoil nutrient transformation by changing microbial community composition and physiological function, but not biomass in subtropical plantations with low P status
	You Y.; Xu H.; Wu X.; Zhou X.; Tan X.; Li M.; Wen Y.; Zhu H.; Cai D.; Huang X.
发表日期	2020
ISSN	0378-1127
卷号	477
英文摘要	Microbial communities and their associated enzyme activities affect carbon (C), nitrogen (N), and phosphorus (P) metabolism in soils. We used phospholipid fatty acids (PLFAs) analysis and extracellular enzyme activity assays to evaluate the effects on topsoil microbial community and nutrient transformation of converting Chinese fir (CF) plantations to native broadleaf (Castanopsis hystrix [CH] and Mytilaria laosensis [ML]) plantations in this study. We found that CH and ML plantations had significantly higher soil organic C (SOC), total N (TN), NH4+-N, soil C/N ratios (C/Nsoil), soil C/P ratios (C/Psoil) and soil N/P ratios (N/Psoil) but significantly lower total P (TP) compared to CF plantations. A distinct shift in soil microbial community composition, but not microbial biomass was evident 23 years after stand conversion. Redundancy analysis (RDA) showed that soil microbial community composition was substantially influenced by litterfall mass (LF), TP, N/Psoil, SOC, fine root biomass (FR), C/Nsoil, TN, litter C/N ratios (C/Nlitter), and C/Psoil; of these, LF appeared to be the primary driver of differences in soil microbial community composition (p < 0.05). In addition, the total activity of hydrolytic enzymes involved in C metabolism (β-glucosidase and cellobiohydrolase), N metabolism (N-acetyl-glucosaminidase), and P metabolism (acid phosphatase) increased significantly in the two native broadleaf plantations, whereas the total activity of oxidase (phenol oxidase) decreased significantly. Furthermore, the change trends of specific enzyme activity (i.e., enzymes per unit microbe) were similar to total enzyme activity. The dynamics of soil microbial enzymatic activity after stand conversion provide a functional link between changes in microbial community composition and soil nutrient transformation. Our findings suggest a mechanism in native, non-N2-fixing broadleaf tree species that stimulates soil nutrient transformation in subtropical planted forests with low P via increases in the quantity and quality of litter and the physiological function per unit of microbial biomass. © 2020 Elsevier B.V.
英文关键词	Enzyme activity; Forest conversion; Microbial community; Nutrient cycle; Phosphorus; Subtropics
语种	英语
scopus关键词	Biomass; Fatty acids; Forestry; Metabolism; Microorganisms; Nutrients; Phosphatases; Phospholipids; Physiology; Soils; Tropics; Extracellular enzyme activity; Microbial community composition; N-acetylglucosaminidase; Nutrient transformations; Phospholipid fatty acids; Physiological functions; Redundancy analysis (RDA); Soil microbial community compositions; Enzyme activity; biomass; community composition; enzyme activity; microbial activity; microbial community; phosphorus; physiology; soil microorganism; soil nutrient; subtropical region; topsoil; tree; Biomass; Fatty Acids; Forestry; Metabolism; Microorganisms; Nutrients; Castanopsis hystrix; Cunninghamia lanceolata; Mytilaria laosensis
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154988
作者单位	Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning, Guangxi 530004, China; Guangxi Youyiguang Forest Ecosystem Research Station, Pingxiang, Guangxi 532600, China; Key Laboratory of Resource Biology and Biotechnology in Western China (Northwest University), Ministry of Education, Xi'an, Shaanxi 710069, China; Experimental Centre of Tropical Forestry, Chinese Academy of Forestry, Pingxiang, Guangxi 532600, China; Institute of Ecological Industry, Guangxi Academy of Sciences, Nanning, Guangxi 530003, China
推荐引用方式 GB/T 7714	You Y.,Xu H.,Wu X.,et al. Native broadleaf tree species stimulate topsoil nutrient transformation by changing microbial community composition and physiological function, but not biomass in subtropical plantations with low P status[J],2020,477.
APA	You Y..,Xu H..,Wu X..,Zhou X..,Tan X..,...&Huang X..(2020).Native broadleaf tree species stimulate topsoil nutrient transformation by changing microbial community composition and physiological function, but not biomass in subtropical plantations with low P status.Forest Ecology and Management,477.
MLA	You Y.,et al."Native broadleaf tree species stimulate topsoil nutrient transformation by changing microbial community composition and physiological function, but not biomass in subtropical plantations with low P status".Forest Ecology and Management 477(2020).