Temporal consistency between gross primary production and solarinduced chlorophyll fluorescence in the ten most populous megacity areas over years

被引：33

作者：

Cui, Yaoping ^{[1
,2
]}

Xiao, Xiangming ^{[2
,3
]}

Zhang, Yao ^{[2
]}

Dong, Jinwei ^{[4
]}

Qin, Yuanwei ^{[2
]}

Doughty, Russell B. ^{[2
]}

Zhang, Geli ^{[2
]}

Wang, Jie ^{[2
]}

Wu, Xiaocui ^{[2
]}

Qin, Yaochen ^{[1
]}

Zhou, Shenghui ^{[1
]}

Joiner, Joanna ^{[5
]}

Moore, Berrien, III ^{[6
]}

机构：

[1] Henan Univ, Collaborat Innovat Ctr Modernizat Harmonious Dev, Lab Geospatial Technol Middle & Lower Yellow Rive, Kaifeng 475004, Henan, Peoples R China

[2] Univ Oklahoma, Dept Microbiol & Plant Biol, Ctr Spatial Anal, Norman, OK 73072 USA

[3] Fudan Univ, Inst Biodivers Sci, Key Lab Biodivers Sci & Ecol Engn, Minist Educ, Shanghai 222200, Peoples R China

[4] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China

[5] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[6] Univ Oklahoma, Coll Atmospher & Geog Sci, Norman, OK 73072 USA

来源：

SCIENTIFIC REPORTS | 2017年 / 7卷

基金：

美国国家科学基金会;

关键词：

NET PRIMARY PRODUCTIVITY; TERRESTRIAL GROSS; PLANT PHENOLOGY; CARBON; URBANIZATION; LAND; PHOTOSYNTHESIS; CLIMATE; VARIABILITY; RETRIEVAL;

D O I：

10.1038/s41598-017-13783-5

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The gross primary production (GPP) of vegetation in urban areas plays an important role in the study of urban ecology. It is difficult however, to accurately estimate GPP in urban areas, mostly due to the complexity of impervious land surfaces, buildings, vegetation, and management. Recently, we used the Vegetation Photosynthesis Model (VPM), climate data, and satellite images to estimate the GPP of terrestrial ecosystems including urban areas. Here, we report VPM-based GPP (GPP(vpm)) estimates for the world's ten most populous megacities during 2000-2014. The seasonal dynamics of GPP(vpm) during 2007-2014 in the ten megacities track well that of the solar-induced chlorophyll fluorescence (SIF) data from GOME-2 at 0.5 degrees x 0.5 degrees resolution. Annual GPP(vpm) during 2000-2014 also shows substantial variation among the ten megacities, and year-to-year trends show increases, no change, and decreases. Urban expansion and vegetation collectively impact GPP variations in these megacities. The results of this study demonstrate the potential of a satellite-based vegetation photosynthesis model for diagnostic studies of GPP and the terrestrial carbon cycle in urban areas.

引用

页数：12

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