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Divergent impacts of droughts on vegetation phenology and productivity in the Yungui Plateau, southwest China
Ge, Wenyan1,3; Han, Jianqiao1,3; Zhang, Daojun2; Wang, Fei1,3
2021-08-01
Source PublicationECOLOGICAL INDICATORS
ISSN1470-160X
Volume127Pages:11
Corresponding AuthorWang, Fei(wafe@ms.iswc.ac.cn)
AbstractClimate change has led to an increase in the severity and frequency of extreme weather events, especially droughts. Quantifying the impacts of droughts on vegetation activities is essential to study the effects of climate change on the ecosystem. Using Gross Primary Productivity (GPP), phenological metrics, and Standardized precipitation evaporation index (SPEI) with multi-timescales, we evaluated the divergent responses of vegetation activities to droughts in the Yungui Plateau from 2001 to 2017. Besides, the sensitivity of vegetation to drought was analyzed by the maximum correlation coefficients between vegetation activities and SPEI over the plateau. Results revealed that the overall changes of the start (SOS) and end (EOS) of growing season in the plateau exhibited nonsignificant changes during the study period. Meanwhile, two extreme droughts of the study period caused a tremendous decrease in GPP and severe delays in SOS and EOS. Vegetation activities increased significantly in the eastern plateau because of the strong drought resistance of vegetation. Conversely, the dynamics of vegetation activities, especially phenological metrics, were nonsignificant in the west due to the weak drought resistance of vegetation. Preseason droughts of spring phenology played a key role in determining SOS dynamics. Besides, drought before summer contributed to the delay of EOS, while summer drought leads to early EOS. Hence, preseason droughts of autumn phenology nonlinearly impacted EOS due to strong interaction between SOS and EOS. More importantly, the stronger influences of SOS on annual GPP compared to EOS suggest that preseason droughts of SOS are essential to the vegetation productivity in the plateau. Given that the continuous warming of the climate will lead to more frequent droughts, it is essential to investigate the resilience of vegetation growth to drought in future work.
KeywordGross primary productivity Phenology Drought Yungui Plateau
DOI10.1016/j.ecolind.2021.107743
WOS KeywordNET PRIMARY PRODUCTIVITY ; EXTREME WEATHER EVENTS ; LAND-SURFACE PHENOLOGY ; CLIMATE-CHANGE ; TIBETAN PLATEAU ; MONGOLIAN PLATEAU ; USE EFFICIENCY ; VARIABILITY ; PRECIPITATION ; DYNAMICS
Indexed BySCI
Language英语
Funding ProjectChinese Academy of Sciences[XAB2019B10] ; China Postdoctoral Science Foundation[2020M673499] ; National Natural Science Foundation of China[42007063] ; Northwest Agriculture and Forest University[Z1090219094]
Funding OrganizationChinese Academy of Sciences ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; Northwest Agriculture and Forest University
WOS Research AreaBiodiversity & Conservation ; Environmental Sciences & Ecology
WOS SubjectBiodiversity Conservation ; Environmental Sciences
WOS IDWOS:000659188000002
PublisherELSEVIER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/164051
Collection中国科学院地理科学与资源研究所
Corresponding AuthorWang, Fei
Affiliation1.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
2.Northwest A&F Univ, Coll Econ & Management, Yangling 712100, Shaanxi, Peoples R China
3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Ge, Wenyan,Han, Jianqiao,Zhang, Daojun,et al. Divergent impacts of droughts on vegetation phenology and productivity in the Yungui Plateau, southwest China[J]. ECOLOGICAL INDICATORS,2021,127:11.
APA Ge, Wenyan,Han, Jianqiao,Zhang, Daojun,&Wang, Fei.(2021).Divergent impacts of droughts on vegetation phenology and productivity in the Yungui Plateau, southwest China.ECOLOGICAL INDICATORS,127,11.
MLA Ge, Wenyan,et al."Divergent impacts of droughts on vegetation phenology and productivity in the Yungui Plateau, southwest China".ECOLOGICAL INDICATORS 127(2021):11.
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