The fate of litter-derived dissolved organic carbon in forest soils: results from an incubation experiment
文献类型：期刊论文
| 作者 | Wang, Min1,2; Tian, Qiuxiang2; Liao, Chang2; Zhao, Rudong2; Wang, Dongya1,2; Wu, Yu2; Li, Qianxi2; Wang, Xinggang2; Liu, Feng2 |
| 刊名 | BIOGEOCHEMISTRY
 |
| 出版日期 | 2019-07-01 |
| 卷号 | 144期号:2页码:133-147 |
| 关键词 | Dissolved organic carbon CO2 emission Retention Leaching Dynamic exchange |
| ISSN号 | 0168-2563 |
| DOI | 10.1007/s10533-019-00576-3 |
| 英文摘要 | Despite being a crucial component of nutrient cycling and soil carbon (C) dynamics in forest ecosystems, there is too little information from past studies to discern whether dissolved organic carbon (DOC) exchanges with soil organic carbon or passes unaltered through soils. In this study, we added C-13-labelled litter-derived DOC into different depth soil columns in a 180-day incubation experiment to determine the fate of DOC in soils, and to monitor the changes in DOC composition when it percolates through the soil. The results showed that delta C-13 values increased in soil microbes, which indicated that some litter-derived DOC was immobilized by soil microbial communities. Approximately 76% of litter-derived DOC was retained in the soil (60% in topsoil and 16% in midsoil). Meanwhile, 18%, 4%, and 3% of litter-derived DOC were mineralized into CO2 in topsoil, midsoil and subsoil respectively. Only 0.04% of litter-derived DOC leached from the soil column (0-60 cm). These results indicated that DOC was mainly retained on soil, and a small portion was mineralized by microorganisms, with minimal leaching. The composition of water soluble soil organic carbon (WSOC) and leachate DOC (LDOC) were similar between the control and treatment. This indicated that the composition of WSOC and LDOC was more similar to soil C than the added DOC, which supports the previously hypothesized dynamic exchange model. These findings provide new insight by showing that most litter-derived DOC is sequestered in forest soils. |
| 资助项目 | National Natural Sciences Foundation of China[31400463] ; National Natural Sciences Foundation of China[31470526] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000476495100002 |
| 出版者 | SPRINGER |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/7885]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Liu, Feng |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Min,Tian, Qiuxiang,Liao, Chang,et al. The fate of litter-derived dissolved organic carbon in forest soils: results from an incubation experiment[J]. BIOGEOCHEMISTRY,2019,144(2):133-147. |
| APA | Wang, Min.,Tian, Qiuxiang.,Liao, Chang.,Zhao, Rudong.,Wang, Dongya.,...&Liu, Feng.(2019).The fate of litter-derived dissolved organic carbon in forest soils: results from an incubation experiment.BIOGEOCHEMISTRY,144(2),133-147. |
| MLA | Wang, Min,et al."The fate of litter-derived dissolved organic carbon in forest soils: results from an incubation experiment".BIOGEOCHEMISTRY 144.2(2019):133-147. |
入库方式： OAI收割
来源：武汉植物园
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。