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Open AccessArticle

Spatiotemporal Variation of Vegetation Productivity and Its Feedback to Climate Change in Northeast China over the Last 30 Years

by 1,2, 1,2,*, 3, 1,2 and 1,2
1
Institute of Remote Sensing and Geographic Information System, School of Earth and Space Sciences, Peking University, Beijing 100871, China
2
Beijing Key Lab of Spatial Information Integration and 3S Application, Peking University, Beijing 100871, China
3
School of Atmospheric Sciences, Sun Yat-Sen University, Guangzhou 519082, China
*
Author to whom correspondence should be addressed.
Academic Editor: Kenji Omasa
Remote Sens. 2021, 13(5), 951; https://doi.org/10.3390/rs13050951
Received: 20 January 2021 / Revised: 22 February 2021 / Accepted: 1 March 2021 / Published: 3 March 2021
(This article belongs to the Special Issue Remote Sensing and Vegetation Mapping)
Gross primary productivity (GPP) represents total vegetation productivity and is crucial in regional or global carbon balance. The Northeast China (NEC), abundant in vegetation resources, has a relatively large vegetation productivity; however, under obvious climate change (especially warming), whether and how will the vegetation productivity and ecosystem function of this region changed in a long time period needs to be revealed. With the help of GPP products provided by the Global LAnd Surface Satellite (GLASS) program, this paper gives an overview of the regional feedback of vegetation productivity to the changing climate (including temperature, precipitation, and solar radiation) across the NEC from 1982 to 2015. Analyzing results show a slight positive response of vegetation productivities to warming across the NEC with an overall increasing trend of GPPGS (accumulated GPP within the growing season of each year) at 4.95 g C/m2. yr−2 over the last three decades. More specifically, the growth of crops, rather than forests, contributes more to the total increasing productivity, which is mainly induced by the agricultural technological progress as well as warming. As for GPP in forested area in the NEC, the slight increment of GPPGS in northern, high-latitude forested region of the NEC was caused by warming, while non-significant variation of GPPGS was found in southern, low-latitude forested region. In addition, an obvious greening trend, as reported in other regions, was also found in the NEC, but GPPGS of forests in southern NEC did not have significant variations, which indicated that vegetation productivity is not bound to increase simultaneously with greening, except for these high-latitude forested areas in the NEC. The regional feedback of vegetation productivity to climate change in the NEC can be an indicator for vegetations growing in higher latitudes in the future under continued climate change. View Full-Text
Keywords: vegetation productivity; Northeast China; climate change; spatiotemporal distribution vegetation productivity; Northeast China; climate change; spatiotemporal distribution
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MDPI and ACS Style

Hu, L.; Fan, W.; Yuan, W.; Ren, H.; Cui, Y. Spatiotemporal Variation of Vegetation Productivity and Its Feedback to Climate Change in Northeast China over the Last 30 Years. Remote Sens. 2021, 13, 951. https://doi.org/10.3390/rs13050951

AMA Style

Hu L, Fan W, Yuan W, Ren H, Cui Y. Spatiotemporal Variation of Vegetation Productivity and Its Feedback to Climate Change in Northeast China over the Last 30 Years. Remote Sensing. 2021; 13(5):951. https://doi.org/10.3390/rs13050951

Chicago/Turabian Style

Hu, Ling; Fan, Wenjie; Yuan, Wenping; Ren, Huazhong; Cui, Yaokui. 2021. "Spatiotemporal Variation of Vegetation Productivity and Its Feedback to Climate Change in Northeast China over the Last 30 Years" Remote Sens. 13, no. 5: 951. https://doi.org/10.3390/rs13050951

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