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Time-lagged response of vegetation dynamics to climatic and teleconnection factors
Zhao, Jing1; Huang, Shengzhi1; Huang, Qiang1; Wang, Hao2; Leng, Guoyong3,4; Fang, Wei1
2020-06-01
Source PublicationCATENA
ISSN0341-8162
Volume189Pages:12
Corresponding AuthorHuang, Shengzhi(huangshengzhi7788@126.com)
AbstractUnderstanding vegetation dynamics and its response to climate changes is important for revealing the mechanisms of terrestrial ecosystem behaviour, predicting future vegetation growth, and thus guiding environmental management. The Jing River Basin (JRB) and the Beiluo River Basin (BLRB), two typical ecoenvironmentally vulnerable regions on the Loess Plateau in China, were selected as case study regions. Based on long-term Normalized Difference Vegetation Index (NDVI) datasets, the time-lag relationships between NDVI and climatic factors (precipitation/temperature) as well as teleconnection factors (large-scale modes of climate variability and solar activity) were revealed. Additionally, ridge regression models were established to quantitatively explore the response of vegetation dynamics to climate change. Results indicate that: (1) NDVI in autumn showed significantly increasing trend (p < 0.01), whereas that in spring and summer was insignificant; (2) there was a time-lag of more than one month between spring/winter NDVI and precipitation/temperature behaviour, and summer NDVI exhibited no lag with temperature but a one month lag with precipitation; (3) regarding the time-lag effects, precipitation was the driving factor of NDVI variations in spring, whereas sunspots dominated NDVI variations in autumn; (4) when time-lagged teleconnection factors were considered, the explanation of the climate effect on the vegetation dynamics in three seasons all relatively increased by > 95%, which indicates that the prediction accuracy of NDVI was significantly improved; (5) in summer, time-lagged climatic and teleconnection factors explained < 20% of NDVI variations, whereas when soil moisture and base flow were considered, the explanation of NDVI changes in the JRB and BLRB relatively increased by 37.4% and 65.1%, respectively. These findings highlight that considering the time-lag effect of climatic and teleconnection factors has important significance for the accurate monitoring of underlying surface dynamics under changing environment.
KeywordClimate changes Vegetation dynamics Time-lag effect Soil moisture Large-scale modes of climate variability
DOI10.1016/j.catena.2020.104474
WOS KeywordNORTH-ATLANTIC OSCILLATION ; QINGHAI-TIBET PLATEAU ; LOESS PLATEAU ; RIVER-BASIN ; SPATIOTEMPORAL VARIATION ; COVER VARIATIONS ; YELLOW-RIVER ; EL-NINO ; CHINA ; NDVI
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFC0405900] ; National Natural Science Foundation of China[51709221] ; Planning Project of Science and Technology of Water Resources of Shaanxi[2015slkj-27] ; Planning Project of Science and Technology of Water Resources of Shaanxi[2017slkj-19] ; Open Research Fund of State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin (China Institute of Water Resources and Hydropower Research)[IWHR-SKL-KF201803]
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; Planning Project of Science and Technology of Water Resources of Shaanxi ; Open Research Fund of State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin (China Institute of Water Resources and Hydropower Research)
WOS Research AreaGeology ; Agriculture ; Water Resources
WOS SubjectGeosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS IDWOS:000525324300010
PublisherELSEVIER
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/133716
Collection中国科学院地理科学与资源研究所
Corresponding AuthorHuang, Shengzhi
Affiliation1.Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg China, Xian 710048, Peoples R China
2.Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, Beijing 100038, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
4.Univ Oxford, Environm Change Inst, Oxford OX1 3QY, England
Recommended Citation
GB/T 7714
Zhao, Jing,Huang, Shengzhi,Huang, Qiang,et al. Time-lagged response of vegetation dynamics to climatic and teleconnection factors[J]. CATENA,2020,189:12.
APA Zhao, Jing,Huang, Shengzhi,Huang, Qiang,Wang, Hao,Leng, Guoyong,&Fang, Wei.(2020).Time-lagged response of vegetation dynamics to climatic and teleconnection factors.CATENA,189,12.
MLA Zhao, Jing,et al."Time-lagged response of vegetation dynamics to climatic and teleconnection factors".CATENA 189(2020):12.
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