摘要
本文在研究横断山区气候区划时发现,以往采用的划分区内气候带指标不连续,带谱不衔接.经采用统一的划分指标后,在横断山区内部划分出了一个山地暖温带。该带带域虽较窄,但填平了一条“鸿沟”,使青藏高寒和东部季风两个气候大区得以自然衔接。
The Hengduan Mountainous Region is situated at the southeastern Qinghai-Xizang Plateau. Its geographic environment is distinctively specific, its geomorphology is very complex and climatic condition varies from place to place. Predecessors have done a lot of works on climatic division.According to the remarkable characteristics of the variation of climate both on horizcntality and verticality and the principle of bio-climate, the Hengduan Mountainous Region may be divided into 2 climatic realms, i. e.,. Qinghai-Xizang Plateau cold climatic realm and southeastern monsoon climatic realm. This division is based on 2 indices. One index is 3000℃ of accumulated temperature for daily mean temperature over 0℃. Other index is that average temperature, of July is 18℃. This division of climatic realm has made the mountain warm zone in southeastern monsoon climatic realm linking up easy goingly the plateau temperate zone, and fills up the gap between 2 climatic realms.The index of division of climatic district is aridity. The division of climatic district has reflected the degree of aridity of the arid valleys and also differentiates the arid condition of Northwest China.As the final result, the Hengduan Mountainous Region has been divided 7 climatic zones and 19 climatic districts. There are 5 climatic zones and 15 climatic districts in the southeastern monsoon climatic realm. And there are 2 climatic zones and 4 climatic districts in the Qinghai-Xizang Plateau cold climatic realm.
出处
《山地研究》
CSCD
1989年第1期21-28,共8页
关键词
横断山区
气候区划
Hengduan Mountainous Region, climatic division, climatic realm, climatic zone, climatic district
