Litter affects CO2 emission from alpine wetland soils experiencing drying-rewetting cycles with different intensities and frequencies
文献类型：期刊论文
| 作者 | Liang, Chen1; Ding, Yan1,2; Yue, Yi1; Zhang, Xiao-Ya1; Song, Ming-Hua3 ; Gao, Jun-Qin1; Yu, Fei-Hai4
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| 刊名 | CATENA
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| 出版日期 | 2021-03-01 |
| 卷号 | 198页码:10 |
| 关键词 | Alpine soil Greenhouse gas emission Qinghai-Tibetan Plateau Soil carbon Soil moisture Soil nitrogen |
| ISSN号 | 0341-8162 |
| DOI | 10.1016/j.catena.2020.105025 |
| 通讯作者 | Gao, Jun-Qin(gaojq@bjfu.edu.cn) |
| 英文摘要 | The frequency and intensity of drying-rewetting cycles can influence soil CO2 emission from the soil and carbon (C) and nitrogen (N) in the soil, but little is known about whether such effects can be altered by litter input into the soil, especially for alpine wetland ecosystems. We conducted a 144-day incubation experiment at 15 degrees C using the soil and litter collected from an alpine wetland on the Qinghai-Tibetan Plateau, China. The soil added with 1 g litter or not was subjected to two frequencies (high vs. low, i.e. 18 vs. 9 cycles with 8 vs. 16 days per cycle, corresponding to 100% vs. 50% of the precipitation frequency in that wetland) and two intensities (high vs. low, i.e. 360 mm vs. 252 mm, corresponding to 100% vs. 70% of precipitation in that wetland) of drying-rewetting cycles. Soil moisture was higher in the high than in the low intensity treatment; litter addition affected soil moisture, but such an effect depended on the time of incubation. Low frequency and high intensity of drying-rewetting cycles significantly enhanced CO2 emission due to increases in available substrate, e.g., soil dissolved organic C, which might result in increased activity of soil microbes such as Acidobacteria, Proteobacteria, Actinobacteria, Basidiomycota and Ascomycota. Adding litter to the soil increased CO2 emission from the soil likely due to increased water holding capability and labile C availability. In the low intensity and high frequency treatment concentrations of inorganic N, ammonium N and nitrate N were higher in the soil with than without litter addition, but in the high intensity treatment of both low and high frequency concentrations of inorganic N and nitrate N were lower. CO2 emission was positively correlated with the concentration of dissolved organic C and soil moisture, but negatively correlated with the concentration of ammonium N. Our results suggest that low frequency of drying-rewetting cycles combined with litter addition can enhance soil CO2 emission, and that effects of drying-rewetting cycles should be taken into account when we consider greenhouse gas emission from alpine wetland soils. |
| WOS关键词 | NITROGEN MINERALIZATION ; ORGANIC-MATTER ; MICROBIAL BIOMASS ; CLIMATE-CHANGE ; LEAF-LITTER ; CARBON ; RESPIRATION ; ZOIGE ; DECOMPOSITION ; TEMPERATURE |
| 资助项目 | National Natural Science Foundation of China[41571084] ; National Natural Science Foundation of China[41871077] ; Innovative Transdisciplinary Program Ecological Restoration Engineering of the Beijing Municipal Education Commission |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000605337000038 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Innovative Transdisciplinary Program Ecological Restoration Engineering of the Beijing Municipal Education Commission |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/136243]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Gao, Jun-Qin |
| 作者单位 | 1.Beijing Forestry Univ, Sch Ecol & Nat Conservat, Beijing 100083, Peoples R China 2.Natl Forestry & Grassland Adm, East China Inventory & Planning Inst, Hangzhou 340019, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, A11 Datun Rd, Beijing 100101, Peoples R China 4.Taizhou Univ, Inst Wetland Ecol & Clone Ecol, Zhejiang Prov Key Lab Plant Evolutionary Ecol & C, Taizhou 318000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liang, Chen,Ding, Yan,Yue, Yi,et al. Litter affects CO2 emission from alpine wetland soils experiencing drying-rewetting cycles with different intensities and frequencies[J]. CATENA,2021,198:10. |
| APA | Liang, Chen.,Ding, Yan.,Yue, Yi.,Zhang, Xiao-Ya.,Song, Ming-Hua.,...&Yu, Fei-Hai.(2021).Litter affects CO2 emission from alpine wetland soils experiencing drying-rewetting cycles with different intensities and frequencies.CATENA,198,10. |
| MLA | Liang, Chen,et al."Litter affects CO2 emission from alpine wetland soils experiencing drying-rewetting cycles with different intensities and frequencies".CATENA 198(2021):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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