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Impact of human activities and climate change on the grassland dynamics under different regime policies in the Mongolian Plateau.

08:00 EDT 4th September 2019 | BioPortfolio

Summary of "Impact of human activities and climate change on the grassland dynamics under different regime policies in the Mongolian Plateau."

To mitigate the grassland degradation in the Mongolian Plateau (MP), both China and Mongolia governments have carried out a series of new policies and ecological projects. However, the effect of such restoration measures on the productivity of grassland in the MP under different political systems remains unclear. Here we study the effects of land use and land cover change, human activities and climate change on the net primary productivity (NPP) of grassland in Mongolia (MG) and Inner Mongolia (IM) from 2001 to 2014. Results showed that the area of grassland increased in both MG and IM, accounted for 4.45 × 10 and 10.31 × 10 km, respectively. The extended grassland contributed 4.34 × 10 Gg C (Gg = 10 g) to the total NPP, while the loss of grassland led to a decrease of 0.19 × 10 Gg C. The total NPP of grasslands in 2014 increased about 17.88% and 30.49% respectively in MG and IM since 2001. Specifically, IM exhibited a higher increase in land converted NPP than MG. The area of grassland restoration in IM and MG accounted for 90.21% and 81.45%, respectively, indicating that the grassland of the MP was restored. Although human activity was the dominant factor on grassland degradation, which was accounted for 9.79% and 18.55% in IM and MG, it has a positive effect on most of the grassland NPP in the MP. Overall, policy measures and ecological projects in IM brought a more positive effect compared with that in MG.

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This article was published in the following journal.

Name: The Science of the total environment
ISSN: 1879-1026
Pages: 134304

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