西藏高原西部荒漠土壤分布与分类问题——兼与有关人士商榷

PROBLEMS ON THE DISTRIBUTION AND CLASSIFICATION OF DESERT SOILSIN WESTERN TIBETAN PLATEAU, CHINA

本文根据笔者1987年的实地调查及前人的有关资料,对西藏高原西部荒漠土壤的分类和分布问题进行讨论,着重阐明了寒漠土与冷漠土的形成过程及分布规律。此外,还提出了所论述地区的荒漠土类及亚类分类意见,以期有益于西藏高原西部荒漠土壤的深入研究。

It has been already presented some new contents and different opinions on problems of distribution and classification of desert soils in western Tibetan Plateau of China since the soil investigatiou was carried out by the Qinghai—Tibetan Plateau Comprehensive Survey Team of Academia Sinica in 1976. In view of the investigations done by ourselves in 1987, and integrating with some intormation concerned, some comprehensive analyses were carried out: 1. Desert soils in western Tibetan Piateau are divided into two groups including frost desert soils (alpine desert soils) and cold desert soils (subalpine desert soils). The frost desert soils are divided into three subgroups as frost desert soils, cambic frost desert soils and gypsic frost desert soils; the cold desert soils are divided into three subgroups as cold desert soils, grey cold desert soils and cambic cold desert soils. 2. Frost desert soils and cold desert soils are the horizontal belt soils of two different landform units in All area; with no relation to vertical dividing line,there only exists latitude one (the boundary is approximately 34° north latitude). 3. It is wrong—doing to cancel grey cold desert soils and to merge it into grassland soil system. 4. Cambic cold desert soils is a new subgroup discovered by Zhada archaic lake basin erosional belt between 3700m～4500m. a. s. 1..