Drier August and colder September slow down the delaying trend of leaf senescence in herbaceous plants on the Qinghai-Tibetan Plateau
文献类型：期刊论文
| 作者 | Sun, Qingling1,2; Zhu, Jiang2; Li, Baolin3,4,6; Zhu, Siyu2; Huang, Jinku5; Chen, Xiuzhi2; Yuan, Wenping2 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2024-01-15 |
| 卷号 | 908页码:12 |
| ISSN号 | 0048-9697 |
| 关键词 | Autumn phenology Temporal change Herbaceous plant Ground observation Climate change |
| DOI | 10.1016/j.scitotenv.2023.168504 |
| 通讯作者 | Sun, Qingling(sunqling@mail.sysu.edu.cn) ; Li, Baolin(libl@lreis.ac.cn) |
| 英文摘要 | Plant phenological shifts on the Qinghai-Tibetan Plateau (QTP) have gained considerable attention over the last few decades. However, temporal changes in plant autumn phenology and the main driving factors remain un-certain. Most previous studies used satellite-derived phenological transition dates and climatic statistics during the preseason, which have relatively large uncertainties and may mask some important climate change char-acteristics at the intra-annual scale, thus affecting exploration of the underlying phenological change causes. This study collected 1685 phenological records at 27 ground stations on the QTP during 1983-2017. Temporal change trends and break points in leaf senescence date (LSD) of 23 herbaceous species were assessed using least squares regression, a meta-analysis procedure, and the Pettitt test. The main drivers and causes were investigated through correlation analysis and contribution calculation based on LSD observations and monthly climatic data. Results showed that, LSD of QTP herbaceous plants was significantly delayed at a rate of 4.45 days/decade during 1983-2017. Break points were concentrated during 1999-2003, with an overall mean in 2001. After 2001, the delay trend in LSD decreased, falling from 5.26 days/decade to 2.54 days/decade. Air temperature and precipitation were the most important climatic factors that showed closer and more extensive correlations with LSD and greater contributions to the inter-annual variations in LSD. August and September were the most critical period during which climatic factors had higher contributions to the LSD shifts. However, August was drier, with precipitation significantly decreasing and temperature increasing, and September was colder after 2001. Therefore, the declining trend in LSD may be attributed to the drier August and colder September. This study has not only provided reliable field evidence on temporal changes in autumn phenology on the QTP, but has also provided valuable insights into autumn phenological modelling and regional carbon cycling in alpine regions. |
| WOS关键词 | VEGETATION AUTUMN PHENOLOGY ; CLIMATE-CHANGE ; GROWING-SEASON ; RESPONSES ; CHINA ; DYNAMICS ; DATE ; END |
| 资助项目 | Guangdong Major Project of Basic and Applied Basic Research[2020B0301030004] ; National Natural Science Foundation of China[42201059] ; Fundamental Research Funds for the Central Universities, Ministry of Education of the People's Republic of China[22qntd1905] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:001113113800001 |
| 资助机构 | Guangdong Major Project of Basic and Applied Basic Research ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities, Ministry of Education of the People's Republic of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/200419]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Sun, Qingling; Li, Baolin |
| 作者单位 | 1.2 Univ Rd, Zhuhai 519082, Guangdong, Peoples R China 2.Sun Yat Sen Univ, Guangdong Prov Data Ctr Terr & Marine Ecosyst Carb, Sch Atmospher Sci, Guangdong Prov Key Lab Climate Change & Nat Disast, Zhuhai 519082, Guangdong, Peoples R China 3.Chinese Acad Sci, State Key Lab Resources & Environm Informat Syst, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China 6.11A Datun Rd, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Qingling,Zhu, Jiang,Li, Baolin,et al. Drier August and colder September slow down the delaying trend of leaf senescence in herbaceous plants on the Qinghai-Tibetan Plateau[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,908:12. |
| APA | Sun, Qingling.,Zhu, Jiang.,Li, Baolin.,Zhu, Siyu.,Huang, Jinku.,...&Yuan, Wenping.(2024).Drier August and colder September slow down the delaying trend of leaf senescence in herbaceous plants on the Qinghai-Tibetan Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,908,12. |
| MLA | Sun, Qingling,et al."Drier August and colder September slow down the delaying trend of leaf senescence in herbaceous plants on the Qinghai-Tibetan Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 908(2024):12. |
入库方式： OAI收割
来源：地理科学与资源研究所
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