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Dynamics and Drivers of Grasslands in the Eurasian Steppe during 2000–2014

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  • Yanzhen Zhang

    (Department of Ecology, School of Life Science, Nanjing University, Nanjing 210046, China)

  • Qian Wang

    (School of Environment and Planning, Liaocheng University, Liaocheng 252059, China)

  • Zhaoqi Wang

    (State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China)

  • Jianlong Li

    (Department of Ecology, School of Life Science, Nanjing University, Nanjing 210046, China)

  • Zengrang Xu

    (Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China)

Abstract

The Eurasian steppe (EAS) is the largest contiguous grassland worldwide. Quantitative evaluations of the relative impacts of climate change and human activities on grasslands are significant for understanding grassland degradation mechanisms and controlling degraded grasslands. In this study, we analyzed the grassland productivity based on multiple forms of net primary productivity (NPP), including climate NPP (CNPP), actual NPP (ANPP), and human-caused NPP (HNPP) during 2000–2014. The results demonstrate that the average value of annual ANPP in the EAS was 47.36 gC/(m 2 ·year), with a weak decrease (−0.02 gC/(m 2 ·year)) during the study period. The area of grassland degradation account for 48.52% of the total grassland area in EAS, while the area of grassland recovery account for 51.48%. Restorative grassland was mainly distributed in Mongolia and China, while worse grassland was mainly distributed in the Kazakh steppe regions. Grassland degradation in China was mainly caused by climate change, whereas it was mainly caused by human activities in Mongolia. Grassland recovery in Kazakh steppe regions was mainly caused by human activities, but in Mongolia, it was mainly caused by climate change. Compared with temperature, precipitation played a more significant role on grassland productivity.

Suggested Citation

  • Yanzhen Zhang & Qian Wang & Zhaoqi Wang & Jianlong Li & Zengrang Xu, 2021. "Dynamics and Drivers of Grasslands in the Eurasian Steppe during 2000–2014," Sustainability, MDPI, vol. 13(11), pages 1-14, May.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:11:p:5887-:d:560894
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    References listed on IDEAS

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    1. Christopher Potter & Steven Klooster & Vanessa Genovese, 2012. "Net primary production of terrestrial ecosystems from 2000 to 2009," Climatic Change, Springer, vol. 115(2), pages 365-378, November.
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    Cited by:

    1. Xuefeng Xu & Jiakui Tang & Na Zhang & Anan Zhang & Wuhua Wang & Qiang Sun, 2023. "Remote Sensing Classification of Temperate Grassland in Eurasia Based on Normalized Difference Vegetation Index (NDVI) Time-Series Data," Sustainability, MDPI, vol. 15(20), pages 1-16, October.

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