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| Soil mono- and disaccharides and amino acids as influenced by plant litter and root processes in a subtropical moist forest of southwest China | |
| Feng, Wenting; Schaefer, Douglas A.; Li, Jianzhou1; Chen, Jianhui2; Feng, Zhili2; Zou, Xiaoming | |
| 2009 | |
| Conference Name | 3rd International Conference on Mechanisms of Organic Matter Stabilization and Destabilization in Soils and Sediments |
| Source Publication | BIOGEOCHEMISTRY |
| Volume | 92 |
| Pages | 119-128 |
| Conference Date | SEP 23-26, 2007 |
| Country | Glenelg, AUSTRALIA |
| Abstract | Soil mono- and disaccharides (SS) and total free amino acids (AA) can influence soil microbial activities, whether they are derived from decomposition of organic materials or from plant root exudates. To quantify the relative importance of aboveground plant litter input and belowground inputs of root exudates and root debris on SS and AA, we conducted litter removal, root trenching and tree girdling experiments in a subtropical moist forest of southwest China. We found that concentrations of SS and AA had pronounced seasonal fluctuations. Litter removal markedly reduced SS concentrations, but it had no effect on AA concentrations. Concentrations of SS were significantly correlated with litterfall that had occurred 2 months earlier in the control plots, but that correlation was not observed in the litter removal plots. Multiple-linear regressions of soil respiration and soil temperature on AA concentrations were significant in both control and litter removal plots, but not in the root trenching or tree girdling plots. These results suggest that SS levels are likely to be regulated by aboveground plant litter input, and concentrations of AA are affected by microbial activity that fluctuates with soil temperature and belowground carbon input. |
| Keyword | Girdling Litterfall removal Root trenching Soil respiration Sugars |
| Language | 英语 |
| Document Type | 会议论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/15130 |
| Collection | 版纳植物园会议文献 |
| Affiliation | 1.Univ Puerto Rico, Inst Trop Ecosyst Studies, San Juan, PR 00931 USA 2.Anhui Normal Univ, Grad Sch, Wuhu 24100, Anhui, Peoples R China 3.Chinese Acad Sci, Forest Ecosyst Res Ctr, Xishuangbanna Trop Bot Garden, Kunming 650223, Yunnan, Peoples R China |
| Recommended Citation GB/T 7714 | Feng, Wenting,Schaefer, Douglas A.,Li, Jianzhou,et al. Soil mono- and disaccharides and amino acids as influenced by plant litter and root processes in a subtropical moist forest of southwest China[C],2009:119-128. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Soil mono- and disac（312KB） | 会议论文 | 开放获取 | CC BY-NC-SA | Application Full Text | ||
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