地理科学 ›› 1986, Vol. 6 ›› Issue (2): 151-157.doi: 10.13249/j.cnki.sgs.1986.02.151

• 论文 • 上一篇    下一篇

华北区平原带第四纪植被类型及其气候意义

赵景波   

  1. 西安地质学院
  • 出版日期:1986-03-20 发布日期:1986-03-20

VEGETATION TYPE AND CLIMATE DURING THE QUATERNARY IN THE PLAIN OF NORTH CHINA

Zhao Jingbo   

  1. Xian College of Geology
  • Online:1986-03-20 Published:1986-03-20

摘要: 华北区平原带第四纪森业植被主要有代表温暖气候的落叶阔叶林、松和落叶阔叶树构成的混交林以及反映较冷气候的云杉、冷杉和落叶阔叶树组成的混交林。以往确定的暗针叶林大部分应属耐冷的混交林。森林草原植被主要由松、桦、栎、榆和革本植物组成,代表温暖半干旱气候。另有指示温干气候的草甸草原和禾草草原。不存在冻原植被。冰期时相当于冻原的南界应在42°N以北。

Abstract: In the plain of North China, the major forest vegetations in the Quaternary were deciduous-broadleaf forest, mixed forest consisting of Pinus and deciduous-broadleaf trees, which indicate warm climate, and the mixed forests consisting of Picea, Abies and deciduous broadleaf trees, which indicate cold climate. Because of the lack of standard pollen amount the previous result determined as Picea Abies isn’t precise, actually the most of them should belong to mixed forest type showing cold climate. Cosequently, the droping range in temperature in the glacial epoch should be lower than that of being estimated by predecessors. The temperature was slightly lower than that occured at the lower boundary of Picea-Abies forest at that time. The forest-steppe vegetation mainly consisted of Pinus, Betula, Quercus, Ulmus and herb, which represents warm and semi-arid climate.The steppe included the meadow steppe and the graminea steppe. Some cold-resistant vegetations such as alpine meadow and tundra which the southern boundary should lie to the north of 42°N during the glacial epoch, have been found.