Variation and control of soil organic carbon and other nutrients in permafrost regions on central Qinghai-Tibetan Plateau
Bibliographic Data
| ID | 15549047 |
|---|---|
| Authors | Wenjie Liu (0000-0001-7588-9295, Chinese Academy of Sciences), Shengyun Chen (0000-0002-3272-2628, Chinese Academy of Sciences, corresponding author), Qian Zhao (0000-0003-1760-249X, Northwest Institute of Eco-Environment and Resources), Sun Zhi-Zhong (Chinese Academy of Sciences), Zhizhong Sun, Jiawen Ren (Chinese Academy of Sciences), Dahe Qin (Chinese Academy of Sciences) |
| Year | 2014 |
| Volume | 9 |
| Issue | 11 |
| Pages | 114013-114013 |
| Publication date | 2014-11-01 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Environmental Research Letters (JOURNAL) |
| Journal identifiers | ISSN: 1748-9326 • E-ISSN: 1748-9326 |
| Publisher | IOP Publishing (PUBLISHER • GB) |
| DOI | 10.1088/1748-9326/9/11/114013 |
| OpenAlex | W2120457161 |
| Language | EN |
| Citations received | 3 |
| References cited | 34 |
The variation and control of soil organic carbon (SOC) and other nutrients in permafrost regions are critical for studying the carbon cycle and its potential feedbacks to climate change; however, they are poorly understood. Soil nutrients samples at depths of 0–10, 10–20, 20–30, and 30–40 cm, were sampled eight times in 2009 in alpine swamp meadow, alpine meadow and alpine steppe in permafrost regions of the central Qinghai-Tibetan Plateau. SOC and total nitrogen (TN) in the alpine swamp meadow and meadow decreased with soil depth, whereas the highest SOC content in the alpine steppe was found at depths of 20–30 cm. The vertical profiles of total and available phosphorus (P) and potassium (K) were relatively uniform for all the three grassland types. Correlation and linear regression analyses showed that soil moisture (SM) was the most important parameter for the vertical variation of SOC and other soil nutrients, and that belowground biomass (BGB) was the main source of SOC and TN. The spatial variations (including seasonal variation) of SOC and TN at plot scale were large. The relative deviation of SOC ranged from 7.18 to 41.50 in the alpine swamp meadow, from 2.88 to 35.91 in the alpine meadow, and from 9.33 to 68.38 in the alpine steppe. The spatial variations in the other soil nutrients varied among different grassland types. The most important factors for spatial variations (including seasonal variation) of SOC, TN, total P, available P, and both total and available K were: SM, SM and temperature, SM, air temperature, and SM and BGB, respectively. The large variation in the three grassland types implies that spatial variation at plot scale should be considered when estimating SOC storage and its dynamics
Agronomy · Biology · Grassland · Nutrient · Permafrost · Plateau (mathematics · Soil carbon · Soil water · Spatial variability · Steppe · Swamp · Total organic carbon · Climate change and permafrost · Cryospheric studies and observations · Environmental Science · Soil and Unsaturated Flow · Ecology · Soil Science
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| Citations per year | 0.27 |
|---|---|
| Citation span | 2015 - 2025 (11) |
| Highly cited | No |