气候变化领域集成服务门户(CCPortal): The response of coarse woody debris decomposition and microbial community to nutrient additions in a subtropical forest

CCPortal

DOI	10.1016/j.foreco.2019.117799
	The response of coarse woody debris decomposition and microbial community to nutrient additions in a subtropical forest
	Wu C.; Zhang Z.; Shu C.; Mo Q.; Wang H.; Kong F.; Zhang Y.; Geoff Wang G.; Liu Y.
发表日期	2020
ISSN	0378-1127
卷号	460
英文摘要	Coarse woody debris (CWD) plays an important role in forest C dynamics because it contains a sizeable proportion of total forest C. Understanding the factors controlling CWD decomposition is hence critical to assessing changes in forest C storage. In this study, we conducted a factorial fertilization experiment in a subtropical forest to investigate the influence of phosphorus (P) and nitrogen (N) availability on CWD decomposition of two species (Cryptomeria japonica (CR) and Platycarya strobilacea (PL)). We also characterized the microbial community of each CWD under different fertilization treatments using the method of phospholipid fatty acids (PLFAs). We found that fertilization with N, P, and N + P increased CWD respiration (RCWD) by 51.4–257.4%, and the magnitude of increase was species-specific. Between the two species, the RCWD of PL was significantly higher than that of CR. During the decomposition process, fertilization with P or N + P resulted in a significant accumulation of N and P in the CWD of both studied species. While N + P treatment resulted in the highest microbial growth of the decomposing CWD, especially for fungi and AMF, P treatment resulted in the highest bacterial growth. Our study indicated that P availability was the primary constraint of CWD decomposition, and N addition did not exacerbate P limitation. The balance of fungal and bacterial might also determine the release of additional nutrients during the decomposition period. To determine whether our results are generally applicable to subtropical forests, future studies should test more tree species with their CWDs in different stages of decomposition. © 2019 Elsevier B.V.
关键词	Bacteria Debris Decomposition Fatty acids Nutrients Phospholipids Tropics Coarse woody debris Cryptomeria japonica Decomposition process Environmental change Fertilization experiment Microbial communities Phospholipid fatty acids Subtropical forests Forestry bacterium carbon cycle carbon sequestration coarse woody debris decomposition environmental change experimental study fatty acid fertilizer application forest soil fungus microbial community nitrogen nutrient dynamics phosphorus subtropical region Bacteria Fatty Acids Forestry Lipids Nutrients Tropics Bacteria (microorganisms)Cryptomeria japonica Fungi Platycarya strobilacea
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132990
推荐引用方式 GB/T 7714	Wu C.,Zhang Z.,Shu C.,et al. The response of coarse woody debris decomposition and microbial community to nutrient additions in a subtropical forest[J]. Forest Ecology and Management,2020,460.
APA	Wu C..,Zhang Z..,Shu C..,Mo Q..,Wang H..,...&Liu Y..(2020).The response of coarse woody debris decomposition and microbial community to nutrient additions in a subtropical forest.,460.
MLA	Wu C.,et al."The response of coarse woody debris decomposition and microbial community to nutrient additions in a subtropical forest".460(2020).