DOI: 10.1016/j.foreco.2017.06.002
Scopus记录号: 2-s2.0-85020479427
论文题名: Effects of nutrient additions on litter decomposition regulated by phosphorus-induced changes in litter chemistry in a subtropical forest, China
作者: Zheng Z. ; Mamuti M. ; Liu H. ; Shu Y. ; Hu S. ; Wang X. ; Li B. ; Lin L. ; Li X.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 400 起始页码: 123
结束页码: 128
语种: 英语
英文关键词: Fertilization
; Litter decay
; Nutrient availability
; P limitation
Scopus关键词: Climate models
; Decomposition
; Forestry
; Phosphorus
; Fertilization
; Land surface models
; Litter decay
; Litter decomposition
; Nutrient availability
; Nutrient concentrations
; Subtropical forests
; Three-field experiments
; Nutrients
; atmosphere-biosphere interaction
; carbon cycle
; decomposition
; fertilizer
; land surface
; litter
; nutrient availability
; nutrient limitation
; phosphorus
; soil chemistry
; subtropical region
; China
英文摘要: Nutrient additions directly alter exogenous nutrient availability in soil, and then affect endogenous nutrient concentration in litter (i.e., litter chemistry), modifying litter decomposition. However, how nutrient-induced changes in litter chemistry interacting with altered soil nutrients affect litter decomposition remain unclear. In this study, three field experiments with reciprocal transplants using litter bags were conducted in a phosphorous (P) limiting subtropical forest with control, nitrogen addition (+N), P addition (+P), and +NP treatments to examine effects of exogenous and endogenous nutrient availability on litter decomposition. Our results showed that, in Experiment I, decomposition of litter collected from the control plots was significantly inhibited by 16% under both +P and +NP treatments and reversed to become net P accumulation from P release compared to that in the control. In Experiment II, since litter collected from +P and +NP plots had higher litter P, lower C/P and N/P, its decomposition was significantly faster in the control plots by 9% and 26%, respectively, with the faster release of N and P in the litter. The in situ Experiment III found that +P and +NP treatments reduced litter decomposition by 6% and 14%, respectively, but +N did not affect it compared to the control. Our results indicate that effects of P addition on litter decomposition were mediated by P-induced changes in litter chemistry, which need to be incorporated into land surface models for predicting effects of nutrient deposition on ecosystem C cycling and assessing the climate-biosphere feedbacks. Main finding Effects of nutrient additions on litter decomposition were regulated by P-induced changes in litter chemistry. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64260
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Tiantong National Forest Ecosystem Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China; Department of Plant Pathology, North Carolina State University, Raleigh, NC, United States; Poskam No.1 Middle School, KaishiXinjiang, China; College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
Recommended Citation:
Zheng Z.,Mamuti M.,Liu H.,et al. Effects of nutrient additions on litter decomposition regulated by phosphorus-induced changes in litter chemistry in a subtropical forest, China[J]. Forest Ecology and Management,2017-01-01,400