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Multiple factors induce temporal shifts in herbaceous plant leaf senescence dates on the Qinghai-Tibetan Plateau

文献类型：期刊论文

作者Sun, Qingling2,3,6; Chen, Guochao2,3; Li, Baolin1,4,5; Zhu, Jiang2,3; Chen, Xiuzhi2,3; Yuan, Wenping2,3
刊名AGRICULTURAL AND FOREST METEOROLOGY
出版日期2023-05-01
卷号334页码:109441
关键词Autumn phenology Leaf senescence date Ground observation Temporal shift Plant functional group
ISSN号0168-1923
DOI10.1016/j.agrformet.2023.109441
文献子类Article
英文摘要Plant autumn phenology affects ecosystem carbon and water cycles. However, autumn phenological shifts of herbaceous plants and their primary regulators on the Qinghai-Tibetan Plateau (QTP) remain uncertain because previous studies were mainly based on remote sensing data. Studies using ground autumn phenological data observed at many stations are very few. This study explored the primary drivers of temporal shifts in leaf senescence date (LSD) and assessed the relative importance of climatic factors and spring phenophases to LSD shifts using correlation analysis, general linear regression, and partial least squares regression based on 1685 phenological records at 27 stations on the QTP. Results showed that, preseason total precipitation (PRE) and minimum air temperature (Tmin) had higher correlation coefficients with LSD and displayed more extensive importance in predicting LSD than other factors. Despite larger influences, contributions of PRE and Tmin to LSD inter-annual variations were only 14.9% and 14.2%, respectively. In total, PRE and air temperatures (TEMs) just explained 38.0% of LSD temporal shifts. These results indicate that although PRE and TEMs are the major regulators of LSD, temporal shifts in LSD are controlled by multiple factors. Overall, climatic factors and spring phenology contributed 53.7% and 15.6% to LSD variations, respectively, which means that climate change obviously outweighed spring phenology in driving LSD shifts. Our study revealed a critical role of PRE in regulating LSD shifts directly or indirectly by enhancing the sensitivity of LSD to TEMs. Moreover, we found that the impacts of precipitation change were more prominent on LSD of sedges than those of grasses and forbs. Therefore, we suggest that accurate autumn phenological models for plants on the QTP should include multiple factors and incorporate the influences of precipitation. This study can also provide insight into QTP grassland management from the perspective of phenological responses to climate change.
WOS关键词VEGETATION AUTUMN PHENOLOGY ; NET PRIMARY PRODUCTIVITY ; CLIMATE-CHANGE ; GROWING-SEASON ; ALPINE MEADOW ; DYNAMICS ; TEMPERATURE ; RESPONSES ; MODEL ; END
WOS研究方向Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS记录号WOS:000968531000001
出版者ELSEVIER
源URL[http://ir.igsnrr.ac.cn/handle/311030/190459]  
专题资源与环境信息系统国家重点实验室_外文论文
作者单位1.Sun Yat Sen Univ, Sch Atmospher Sci, 2,Univ Rd,Tangjiawan Town, Zhuhai 519082, Guangdong, Peoples R China
2.Sun Yat Sen Univ, Sch Atmospher Sci, Zhuhai 519082, Guangdong, Peoples R China
3.Guangdong Prov Key Lab Climate Change & Nat Disast, Zhuhai 519082, Guangdong, Peoples R China
4.Guangdong Lab, Guangdong Prov Data Ctr Terr & Marine Ecosyst Carb, Zhuhai 519082, Guangdong, Peoples R China
5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
7.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, 11A,Datun Rd, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Qingling,Chen, Guochao,Li, Baolin,et al. Multiple factors induce temporal shifts in herbaceous plant leaf senescence dates on the Qinghai-Tibetan Plateau[J]. AGRICULTURAL AND FOREST METEOROLOGY,2023,334:109441.
APA Sun, Qingling,Chen, Guochao,Li, Baolin,Zhu, Jiang,Chen, Xiuzhi,&Yuan, Wenping.(2023).Multiple factors induce temporal shifts in herbaceous plant leaf senescence dates on the Qinghai-Tibetan Plateau.AGRICULTURAL AND FOREST METEOROLOGY,334,109441.
MLA Sun, Qingling,et al."Multiple factors induce temporal shifts in herbaceous plant leaf senescence dates on the Qinghai-Tibetan Plateau".AGRICULTURAL AND FOREST METEOROLOGY 334(2023):109441.

入库方式： OAI收割

来源：地理科学与资源研究所

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