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Earlier Spring-Summer Phenology and Higher Photosynthetic Peak Altered the Seasonal Patterns of Vegetation Productivity in Alpine Ecosystems

文献类型：期刊论文

作者Yang, Fan2; Liu, Chao2; Chen, Qianqian2; Lai, Jianbin1; Liu, Tiegang2
刊名REMOTE SENSING
出版日期2024-05-01
卷号16期号:9页码:20
关键词alpine ecosystems phenology photosynthetic peak gross primary productivity
DOI10.3390/rs16091580
英文摘要Carbon uptake of vegetation is controlled by phenology and photosynthetic carbon uptake capacity. However, our knowledge of the seasonal responses of vegetation productivity to phenological and physiological changes in alpine ecosystems is still weak. In this study, we quantified the spatio-temporal variations of vegetation phenology and gross primary productivity (GPP) across the source region of the Yellow River (SRYR) by analyzing MODIS-derived vegetation phenology and GPP from 2001 to 2019, and explored how vegetation phenology and maximum carbon uptake capacity (GPP(max)) affected seasonal GPP over the region. Our results showed that the SRYR experienced significantly advanced trends (p < 0.05) for both start (SOS) and peak (POS) of the growing season from 2001 to 2019. Spring GPP (GPP(spr)) had a significantly increasing trend (p < 0.01), and the earlier SOS had obvious positive effects on GPP(spr). Summer GPP (GPP(sum)) was significantly and negatively correlated to POS (p < 0.05). In addition, GPP(max) had a significant and positive correlation with GPP(sum) and GPP(ann) (p < 0.01), respectively. It was found that an earlier spring-summer phenology and higher photosynthetic peak enhanced the photosynthetic efficiency of vegetation in spring and summer and altered the seasonal patterns of vegetation productivity in the SRYR under warming and wetting climates. This study indicated that not only spring and autumn phenology but also summer phenology and maximum carbon uptake capacity should be regarded as crucial indicators regulating the carbon uptake process in alpine ecosystems. This research provides important information about how changes in phenology affect vegetation productivity in alpine ecosystems under global climate warming.
WOS关键词GROSS PRIMARY PRODUCTION ; NET PRIMARY PRODUCTIVITY ; LAND-SURFACE PHENOLOGY ; TIBETAN PLATEAU ; YELLOW-RIVER ; SOURCE REGION ; INTERANNUAL VARIABILITY ; PLANT PHENOLOGY ; CARBON EXCHANGE ; GROWING-SEASON
资助项目National Natural Sciences Foundation of China
WOS研究方向Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
语种英语
WOS记录号WOS:001220687600001
出版者MDPI
资助机构National Natural Sciences Foundation of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/205802]  
专题禹城站农业生态系统研究中心_外文论文
通讯作者Liu, Tiegang
作者单位1.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Sichuan Univ, Coll Water Resource & Hydropower, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Fan,Liu, Chao,Chen, Qianqian,et al. Earlier Spring-Summer Phenology and Higher Photosynthetic Peak Altered the Seasonal Patterns of Vegetation Productivity in Alpine Ecosystems[J]. REMOTE SENSING,2024,16(9):20.
APA Yang, Fan,Liu, Chao,Chen, Qianqian,Lai, Jianbin,&Liu, Tiegang.(2024).Earlier Spring-Summer Phenology and Higher Photosynthetic Peak Altered the Seasonal Patterns of Vegetation Productivity in Alpine Ecosystems.REMOTE SENSING,16(9),20.
MLA Yang, Fan,et al."Earlier Spring-Summer Phenology and Higher Photosynthetic Peak Altered the Seasonal Patterns of Vegetation Productivity in Alpine Ecosystems".REMOTE SENSING 16.9(2024):20.

入库方式： OAI收割

来源：地理科学与资源研究所

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