摘要
横断山区地域分异明显。各自然地理要素作地带性组合,自然地理环境呈水平分异,农业土地利用也大体呈纬向带状分布。根据温度和水分条件的地域组合及地势差异,将横断山区划分为5个自然地带、9个自然区,并与以往的方案进行了比较,阐述了自然地带界线的划分及各带特征。
There are obvious regional differentiation in the Hengduan Mountainous Region.According to the regional combination of temperature-moisture regimes and relief characteristics, 5 zones and 9 regions may be divided:Ⅰ .Peripheral tropical mountain zone with monsoon rainforest and semi-evergreen monsoon rainforest.Ⅰ 1.Southern and southwestern Yunnan basin region.Ⅱ .Southern subtropical mountain zone with monsoon evergreen broad-leaved forest.Ⅱ 1 .South western Yunnan middle mountain, mountain plateau and valley region.Ⅲ .Middle subtropical mountain zone with evergreen broad-leaved and Pinus yunnanensis forests.Ⅲ 1 .Southwestern Sichuan middle mountain, deep gorge region. Ⅲ2. Western Yunnan high and middle mountains, deep gorge region. Ⅳ.Temperate mountain zone with montane coniferous forest on the Qinghai-Xizang Plateau.Ⅳ 1.Min and Qionglai Mountains middle and high mountains region. Ⅳ2.High mountain, deep gorge region at the middle reaches of Jinsha, Lancang and Nu Rivers.Ⅳ 3.High mountain,deep gorge region at the upper reaches of Jinsha. Lancang and Nu Rivers.Ⅴ .Subpolar zone with alpine shrubby meadow on the Qinghai-Xizang Plateau.Ⅴ 1,Zoige hill plateau region.Ⅴ 2. Sertar-Serxu plateau, broad valley region.
出处
《山地研究》
CSCD
1989年第1期56-64,共9页
关键词
横断山区
综合自然区划
地域组合
Hengduan Mountainous Region, physico-geographic regionalization, regional combination
