TY - JOUR
T1 - Global urban expansion offsets climate-driven increases in terrestrial net primary productivity
AU - Liu, Xiaoping
AU - Pei, Fengsong
AU - Wen, Youyue
AU - Li, Xia
AU - Wang, Shaojian
AU - Wu, Changjiang
AU - Cai, Yiling
AU - Wu, Jianguo
AU - Chen, Jun
AU - Feng, Kuishuang
AU - Liu, Junguo
AU - Hubacek, Klaus
AU - Davis, Steven J.
AU - Yuan, Wenping
AU - Yu, Le
AU - Liu, Zhu
N1 - Funding Information:
Soil data. The soil data were obtained from the Harmonized World Soil Database (HWSD), which was produced via a collaboration among the Food and Agriculture Organization (FAO) of the United Nations, International Institute for Applied Systems Analysis (IIASA), ISRIC-World Soil Information, Chinese Academy of Sciences, and the Joint Research Centre of the European Commission (JRC)65. The HWSD is a raster dataset with a 30 arc-second resolution containing >16,000 different soil mapping units. The dataset assimilated existing regional and national updates of soil information (e.g., European Soil Database and 1:1,000,000 soil map of China) with 1:5 000 000 FAO-UNESCO Soil Map of the World (FAO, 1971–1981). In addition, dataset on global soil nutrients was also collected from ref.25.
Funding Information:
This research was financially supported by the National Key R&D Program of China (No. 2017YFA0604404), the Key National Natural Science Foundation of China (No. 41531176), the Major Program of National Natural Science Foundation of China (No. 41590840), the National Natural Science Foundation of China (Nos. 41671398, 71874097, 41921005, and 41842057) and the Priority Academic Program Development of Jiangsu Higher Education Institutions.
Publisher Copyright:
© 2019, The Author(s).
PY - 2019/12/1
Y1 - 2019/12/1
N2 - The global urbanization rate is accelerating; however, data limitations have far prevented robust estimations of either global urban expansion or its effects on terrestrial net primary productivity (NPP). Here, using a high resolution dataset of global land use/cover (GlobeLand30), we show that global urban areas expanded by an average of 5694 km2 per year between 2000 and 2010. The rapid urban expansion in the past decade has in turn reduced global terrestrial NPP, with a net loss of 22.4 Tg Carbon per year (Tg C year−1). Although small compared to total terrestrial NPP and fossil fuel carbon emissions worldwide, the urbanization-induced decrease in NPP offset 30% of the climate-driven increase (73.6 Tg C year−1) over the same period. Our findings highlight the urgent need for global strategies to address urban expansion, enhance natural carbon sinks, and increase agricultural productivity.
AB - The global urbanization rate is accelerating; however, data limitations have far prevented robust estimations of either global urban expansion or its effects on terrestrial net primary productivity (NPP). Here, using a high resolution dataset of global land use/cover (GlobeLand30), we show that global urban areas expanded by an average of 5694 km2 per year between 2000 and 2010. The rapid urban expansion in the past decade has in turn reduced global terrestrial NPP, with a net loss of 22.4 Tg Carbon per year (Tg C year−1). Although small compared to total terrestrial NPP and fossil fuel carbon emissions worldwide, the urbanization-induced decrease in NPP offset 30% of the climate-driven increase (73.6 Tg C year−1) over the same period. Our findings highlight the urgent need for global strategies to address urban expansion, enhance natural carbon sinks, and increase agricultural productivity.
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U2 - 10.1038/s41467-019-13462-1
DO - 10.1038/s41467-019-13462-1
M3 - Article
C2 - 31804470
AN - SCOPUS:85076036778
SN - 2041-1723
VL - 10
JO - Nature communications
JF - Nature communications
IS - 1
M1 - 5558
ER -