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Vegetation distribution of China and its responses to climate change

This article explores the distribution of vegetation in China and its response to climate change, focusing on the role of geographic features and circulation patterns. It examines the relationship between climate and vegetation, highlighting the impact of temperature and precipitation. The study uses the BIOME model to analyze the changes in vegetation distribution under different climate scenarios and identifies vulnerable areas. It also discusses the effects of climate change on human activities such as deforestation and desertification in China.

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Vegetation distribution of China and its responses to climate change

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  1. Vegetation distribution of China and its responses to climate change Ensheng Weng

  2. Geographic features of China

  3. Summer circulation Tibetan Plateau plays a critical role Westerly jet South-east monsoon South-west monsoon

  4. Winter circulation Siberia-Mongolian cold high Tibetan Plateau plays a critical role Westerly jet Tibetan cold high

  5. Climate of China

  6. Climate of China T (Jan.) T (Jul.)

  7. Climate-Vegetation Relationships • Climate determines vegetation distribution • Precipitation and temperature are two key factors from Whittaker, 1975

  8. Vegetation of China Wu, CY, 1980. Vegetation of China

  9. Vegetation of China - Taiga Mixed forest Temperate forest Sub-Tropical forest Tropical forest + Wu, CY, 1980. Vegetation of China

  10. Vegetation of China - + Desert Desert steppe Typical steppe Meadow steppe Forest Wu, CY, 1980. Vegetation of China

  11. Vegetation of China Alpine deserts Alpine steppes Alpine meadows Conifer forests Wu, CY, 1980. Vegetation of China

  12. Vegetation of China - + - Taiga Desert Desert steppe Typical steppe Meadow steppe Forest Mixed forest Alpine deserts Temperate forest Alpine steppes Alpine meadows Conifer forests Sub-Tropical forest Tropical forest + Wu, CY, 1980. Vegetation of China

  13. How it response to climate change Changes of Temperature in past 50 years Changes of Precipitation in past 50 years Northern area Central China

  14. Scenarios at the end of 21st century CO2 SRES-A2 CO2 SRES-B2

  15. BIOME model • Defined 14 plant functional types (PFTs); • Assigned a climatic envelope for every PFT; • porsposed a rule to regulate the co-exist of PFTs; • Biomes (vegetation types) are the combinations of PFTs.

  16. BIOME model

  17. BIOME model

  18. Calibration • Simulated map from original parameters • the boundary between forests and steppes • forests shift southwards

  19. Calibration Priestley-Taylor coefficient

  20. Calibration Temperature of January

  21. Calibration The same PFTs occur in the colder and dryer areas

  22. The results from new parameters Kappa=0.67

  23. Response of vegetation distribution to climate change CO2 SRES-A2 CO2 SRES-B2

  24. Vulnerable areas • Northern China • Southwestern China • Tibetan Plateau

  25. Effects on Human being Deforestation Desertification

  26. Thank you!

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