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

Yaoping Cui; Xiangming Xiao; Yao Zhang; Jinwei Dong; Yuanwei Qin; Russell B Doughty; Geli Zhang; Jie Wang; Xiaocui Wu; Yaochen Qin; Shenghui Zhou; Joanna Joiner; Berrien Moore 3rd

doi:10.1038/s41598-017-13783-5

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

Sci Rep. 2017 Nov 2;7(1):14963. doi: 10.1038/s41598-017-13783-5.

Authors

Yaoping Cui^{1

2}, Xiangming Xiao^{3

4}, Yao Zhang², Jinwei Dong⁵, Yuanwei Qin², Russell B Doughty², Geli Zhang², Jie Wang², Xiaocui Wu², Yaochen Qin¹, Shenghui Zhou¹, Joanna Joiner⁶, Berrien Moore 3rd⁷

Affiliations

¹ Collaborative Innovation Center for the "Three Modernization" Harmonious Development of Central Plains Economic Region, Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Henan University, Kaifeng, Henan, 475004, China.
² Department of Microbiology and Plant Biology, Center for Spatial Analysis, University of Oklahoma, Norman, Oklahoma, 73072, USA.
³ Department of Microbiology and Plant Biology, Center for Spatial Analysis, University of Oklahoma, Norman, Oklahoma, 73072, USA. xiangming.xiao@ou.edu.
⁴ Ministry of Education Key Laboratory of Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, Shanghai, 222200, China. xiangming.xiao@ou.edu.
⁵ Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China.
⁶ NASA Goddard Space Flight Center, Greenbelt, MD, 20771, USA.
⁷ College of Atmospheric and Geographic Sciences, University of Oklahoma, Norman, Oklahoma, 73072, USA.

Abstract

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° × 0.5° 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.

Publication types

Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Carbon Cycle
Chlorophyll / metabolism*
Ecosystem
Fluorescence
Models, Biological
Photosynthesis*
Plant Development
Plants / metabolism*
Sunlight
Urbanization

Substances

Chlorophyll

Grants and funding

R01 AI101028/AI/NIAID NIH HHS/United States