孙爱芝 等 (2020):Global and Planetary Change

  • 邓钰宏
  • 创建于 2020-08-19

文章题目: An updated biomization scheme and vegetation reconstruction based on a synthesis of modern and mid-Holcene pollen data in China.

 

文章摘要:This paper presents an updated Taxa-PFTs-Biome scheme, based on 18 biomes, 30 Plant Functional Types (PFTs) and 590 pollen taxa from 1630 surface pollen sites in China. The biomization results reveal a total of 16 biome types comprising eight new biomes. By comparing the simulated biome types with modern potential vegetation, 80% of the sampling sites were correctly assigned, which is considerably more accurate than studies which have used previous Chinese biomization schemes. The biome reconstruction for the mid-Holocene (6 ± 0.5 14C kyr B.P.) shows that: (1) In eastern China, tropical, subtropical, warm-temperate and cool-temperate forests did not significantly expand northward, whilst cold-temperate forests were absent from northeastern China; and (2) in central China, the western boundary of steppe vegetation was shifted westwards due to a ~150–300 km extension of the forest and forest-steppe biomes, which is close to the present-day 200–300 mm isohyet. The northwestward shift of the forest and forest-steppe in central China during the mid-Holocene indicates that moisture levels were enhanced compared to the present day. The climatic mechanism responsible was likely a strengthened East Asian summer monsoon, which resulted in increased moisture transport from the ocean to the semiarid regions in northern China, promoting the development of forest and forest-steppe vegetation.

 

引用信息:Sun A.Z., Luo Y.L., WU H.B., Chen X.D., Li Q., Yu Y.Y., Sun X.J., Guo Z.T., 2020. An updated biomization scheme and vegetation reconstruction based on a synthesis of modern and mid-Holcene pollen data in China. Global and Planetary Change, 192, 103178.