| Climate change affects soil labile organic carbon fractions in a Tibetan alpine meadow | |
| Hu, YG (Hu, Yigang)1,2; Wang, ZR (Wang, Zengru)1,2; Wang, Q (Wang, Qi)3,4; Wang, SP (Wang, Shiping)3,5; Zhang, ZS (Zhang, Zhishan)1,2; Zhang, ZH (Zhang, Zhenhua)6; Zhao, Y (Zhao, Yang)1,2; Hu, YG; Wang, SP | |
| Source Publication | JOURNAL OF SOILS AND SEDIMENTS
 |
| 2017 | |
| Volume | 17Issue:2Pages:326-339 |
| DOI | 10.1007/s11368-016-1565-4 |
| Abstract | Changes in bioactive soil C pools and their temperature sensitivities will dominate the fate of soil organic C in a warmer future, which is not well understood in highland ecosystems. This study was conducted in order to evaluate climate change, especially cooling effects, on soil labile organic C (LOC) pools in a Tibetan alpine meadow. A short-term reciprocal translocation experiment was implemented to stimulate climate warming (downward translocation) and cooling (upward translocation) using an elevation gradient on the Tibetan Plateau. Variations in soil microbial biomass C (MBC), dissolved organic C (DOC) and LOC were analyzed. Over the range of soil temperature from 0.02 to 5.5 A degrees C, warming averagely increased soil MBC, DOC and LOC by 15.3, 17.0 and 3.7 % while cooling decreased them by 11.0, 11.9 and 3.2 %, respectively. Moreover, warming generally increased the proportion of DOC in LOC but cooling had an opposite effect, while the response of the MBC proportion to DOC and LOC varied depending on vegetation type. Soil MBC, DOC and LOC pools were positively related to soil temperature and showed a hump-shaped relationship with soil moisture with a threshold of about 30-35 %. Although soil DOC was more sensitive to warming (5.1 % A degrees C-1) than to cooling (3.0 % A degrees C-1), soil LOC showed a symmetrical response due to regulation by soil moisture. Our results indicated that climate change would not only change the size of soil LOC pools but also their quality. Therefore, cooling effects and regulation of soil moisture should be considered to evaluate the fate of soil organic C in Tibetan alpine meadows in a warmer future. |
| Subject Area | 普通生物学 |
| WOS ID | WOS:000389912200004 |
| Language | 英语 |
| Indexed By | SCI |
| Keyword | MICROBIAL BIOMASS-C TEMPERATURE SENSITIVITY RECIPROCAL TRANSLOCATION TERRESTRIAL ECOSYSTEMS MATTER DECOMPOSITION ELEVATION GRADIENT TURNOVER NITROGEN PLATEAU RESPIRATION |
| WOS Research Area | Environmental Sciences & Ecology; Agriculture |
| WOS Subject | Environmental Sciences; Soil Science |
| Cooperation Status | 国内 |
| Subtype | Article |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itpcas.ac.cn/handle/131C11/8363 |
| Collection | 图书馆 |
| Corresponding Author | Hu, YG; Wang, SP |
| Affiliation | 1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Expt & Res Stn, Lanzhou 730000, Peoples R China. 2.Key Lab Stress Physiol & Ecol Cold & Arid Reg Gan, Lanzhou 730000, Peoples R China. 3.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing 100085, Peoples R China. 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China. 5.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China. 6.Chinese Acad Sci, Key Lab Adaptat & Evolut Plateau Biota, Northwest Inst Plateau Biol, Xining 810008, Peoples R China. |
| Recommended Citation GB/T 7714 | Hu, YG ,Wang, ZR ,Wang, Q ,et al. Climate change affects soil labile organic carbon fractions in a Tibetan alpine meadow[J]. JOURNAL OF SOILS AND SEDIMENTS,2017,17(2):326-339. |
| APA | Hu, YG .,Wang, ZR .,Wang, Q .,Wang, SP .,Zhang, ZS .,...&Wang, SP.(2017).Climate change affects soil labile organic carbon fractions in a Tibetan alpine meadow.JOURNAL OF SOILS AND SEDIMENTS,17(2),326-339. |
| MLA | Hu, YG ,et al."Climate change affects soil labile organic carbon fractions in a Tibetan alpine meadow".JOURNAL OF SOILS AND SEDIMENTS 17.2(2017):326-339. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| V.17(2) 326-339 2017（1988KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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